https://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&feed=atom&action=historyHow to use a multimeter - Revision history2024-03-29T14:47:54ZRevision history for this page on the wikiMediaWiki 1.38.2https://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=6676&oldid=prevPhilip at 21:22, 9 October 20222022-10-09T21:22:38Z<p></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>In this page we show you how to choose a multimeter and how to use it for fault finding and testing.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>In this page we show you how to choose a multimeter and how to use it for fault finding and testing.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><!--Work in progress - pics/diagrams to be added.--></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><!--Work in progress - pics/diagrams to be added.--></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><div class="showtoc"></ins></div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Summary==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Summary==</div></td></tr>
</table>Philiphttps://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=6296&oldid=prevPhilip: /* Measuring Continuity and Resistance */2022-04-18T09:30:20Z<p><span dir="auto"><span class="autocomment">Measuring Continuity and Resistance</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 09:30, 18 April 2022</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l62">Line 62:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can use the continuity test function or the lowest resistance range to test a fuse. Touch the probes on the two ends and see if you get a beep or a zero (or very low) reading, indicating that it is good. A blown fuse will give an out of range reading.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can use the continuity test function or the lowest resistance range to test a fuse. Touch the probes on the two ends and see if you get a beep or a zero (or very low) reading, indicating that it is good. A blown fuse will give an out of range reading.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>You can test a filament light bulb (a halogen bulb or a replaceable Christmas tree light bulb, but not a low energy bulb) with the lowest or next to lowest resistance range. You should get a reading of tens or hundreds of ohms only. <del style="font-weight: bold; text-decoration: none;">(This </del>is the resistance of the filament when cold. At working temperature, the resistance may increase ten-fold or more.<del style="font-weight: bold; text-decoration: none;">)</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>You can test a filament light bulb (a halogen bulb or a replaceable Christmas tree light bulb, but not a low energy bulb) with the lowest or next to lowest resistance range. You should get a reading of tens or hundreds of ohms only. <ins style="font-weight: bold; text-decoration: none;">However, this </ins>is the resistance of the filament when cold. At working temperature, the resistance may increase ten-fold or more.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Heating elements in electric kettles and other cooking and heating appliances can be tested in the same way. You can expect a resistance in the tens of ohms.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Heating elements in electric kettles and other cooking and heating appliances can be tested in the same way. You can expect a resistance in the tens of ohms<ins style="font-weight: bold; text-decoration: none;">, though as with a filament bulb, the actual measured value with the element cold may be significantly less</ins>.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test resistors with the resistance ranges, but soldered onto a circuit board, the path through the resistor itself may not be the only electrical path between its ends, resulting in misleading results. Furthermore, there is some chance that the voltage applied by the multimeter in order to measure a resistance could damage sensitive electronic components. If you can borrow another multimeter, connect the probes of yours, set to a resistance range, to the probes of the other, set to a low Volts range. If the reading on the second multimeter is no more than 0.5V with the first on any of the resistance ranges then it cannot do any damage.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test resistors with the resistance ranges, but soldered onto a circuit board, the path through the resistor itself may not be the only electrical path between its ends, resulting in misleading results. Furthermore, there is some chance that the voltage applied by the multimeter in order to measure a resistance could damage sensitive electronic components. If you can borrow another multimeter, connect the probes of yours, set to a resistance range, to the probes of the other, set to a low Volts range. If the reading on the second multimeter is no more than 0.5V with the first on any of the resistance ranges then it cannot do any damage.</div></td></tr>
</table>Philiphttps://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=6293&oldid=prevPhilip: /* Measuring Continuity and Resistance */2022-04-17T16:26:32Z<p><span dir="auto"><span class="autocomment">Measuring Continuity and Resistance</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:26, 17 April 2022</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l57">Line 57:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Touch the probe tips together. You should get a zero reading on any of the resistance ranges as there is now virtually no resistance to the current flow between the probes.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Touch the probe tips together. You should get a zero reading on any of the resistance ranges as there is now virtually no resistance to the current flow between the probes.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The lowest resistance range may also be a continuity tester, producing a beep when you touch the probes together. In fact, continuity testing is probably the most useful function of the resistance ranges allowing you to test whether a current can flow easily between two points A and B, such as the two ends of a lead.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The lowest resistance range may also be a continuity tester, producing a beep when you touch the probes together. In fact, continuity testing is probably the most useful function of the resistance ranges<ins style="font-weight: bold; text-decoration: none;">, </ins>allowing you to test whether a current can flow easily between two points A and B, such as the two ends of a lead <ins style="font-weight: bold; text-decoration: none;">or the two sides of a switch</ins>.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Img_2179a.jpg|180px|thumb|left|Testing a fuse.]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Img_2179a.jpg|180px|thumb|left|Testing a fuse.]]</div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test a filament light bulb (a halogen bulb or a replaceable Christmas tree light bulb, but not a low energy bulb) with the lowest or next to lowest resistance range. You should get a reading of tens or hundreds of ohms only. (This is the resistance of the filament when cold. At working temperature, the resistance may increase ten-fold or more.)</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test a filament light bulb (a halogen bulb or a replaceable Christmas tree light bulb, but not a low energy bulb) with the lowest or next to lowest resistance range. You should get a reading of tens or hundreds of ohms only. (This is the resistance of the filament when cold. At working temperature, the resistance may increase ten-fold or more.)</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Heating elements in electric kettles and other cooking and heating appliances can be tested in the same way. <del style="font-weight: bold; text-decoration: none;">Divide 55,000 by the [[Glossary:Watt|wattage]] (which should be marked on the device) to get </del>a <del style="font-weight: bold; text-decoration: none;">rough idea of the [[Glossary:Resistance|</del>resistance<del style="font-weight: bold; text-decoration: none;">]] (</del>in <del style="font-weight: bold; text-decoration: none;">[[Glossary:Ohm|</del>ohms<del style="font-weight: bold; text-decoration: none;">]]) to expect</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Heating elements in electric kettles and other cooking and heating appliances can be tested in the same way. <ins style="font-weight: bold; text-decoration: none;">You can expect </ins>a resistance in <ins style="font-weight: bold; text-decoration: none;">the tens of </ins>ohms.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test resistors with the resistance ranges, but soldered onto a circuit board, the path through the resistor itself may not be the only electrical path between its ends, resulting in misleading results. Furthermore, there is some chance that the voltage applied by the multimeter in order to measure a resistance could damage sensitive electronic components. If you can borrow another multimeter, connect the probes of yours, set to a resistance range, to the probes of the other, set to a low Volts range. If the reading on the second multimeter is no more than 0.5V with the first on any of the resistance ranges then it cannot do any damage.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test resistors with the resistance ranges, but soldered onto a circuit board, the path through the resistor itself may not be the only electrical path between its ends, resulting in misleading results. Furthermore, there is some chance that the voltage applied by the multimeter in order to measure a resistance could damage sensitive electronic components. If you can borrow another multimeter, connect the probes of yours, set to a resistance range, to the probes of the other, set to a low Volts range. If the reading on the second multimeter is no more than 0.5V with the first on any of the resistance ranges then it cannot do any damage.</div></td></tr>
</table>Philiphttps://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=6279&oldid=prevPhilip: /* Measuring Continuity and Resistance */2022-04-16T16:24:45Z<p><span dir="auto"><span class="autocomment">Measuring Continuity and Resistance</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:24, 16 April 2022</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l63">Line 63:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test a filament light bulb (a halogen bulb or a replaceable Christmas tree light bulb, but not a low energy bulb) with the lowest or next to lowest resistance range. You should get a reading of tens or hundreds of ohms only. (This is the resistance of the filament when cold. At working temperature, the resistance may increase ten-fold or more.)</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test a filament light bulb (a halogen bulb or a replaceable Christmas tree light bulb, but not a low energy bulb) with the lowest or next to lowest resistance range. You should get a reading of tens or hundreds of ohms only. (This is the resistance of the filament when cold. At working temperature, the resistance may increase ten-fold or more.)</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Heating elements in electric kettles and other cooking and heating appliances can be tested in the same way. Divide 55,000 by the [[Glossary:Watt|wattage]] (which should be marked on the device) to get a rough idea of the [[Glossary:Resistance|resistance]] (in [[Glossary:Ohm|ohms]]) to expect.</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test resistors with the resistance ranges, but soldered onto a circuit board, the path through the resistor itself may not be the only electrical path between its ends, resulting in misleading results. Furthermore, there is some chance that the voltage applied by the multimeter in order to measure a resistance could damage sensitive electronic components. If you can borrow another multimeter, connect the probes of yours, set to a resistance range, to the probes of the other, set to a low Volts range. If the reading on the second multimeter is no more than 0.5V with the first on any of the resistance ranges then it cannot do any damage.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can test resistors with the resistance ranges, but soldered onto a circuit board, the path through the resistor itself may not be the only electrical path between its ends, resulting in misleading results. Furthermore, there is some chance that the voltage applied by the multimeter in order to measure a resistance could damage sensitive electronic components. If you can borrow another multimeter, connect the probes of yours, set to a resistance range, to the probes of the other, set to a low Volts range. If the reading on the second multimeter is no more than 0.5V with the first on any of the resistance ranges then it cannot do any damage.</div></td></tr>
</table>Philiphttps://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=6158&oldid=prevPhilip: /* Testing equipment */2022-02-13T15:03:18Z<p><span dir="auto"><span class="autocomment">Testing equipment</span></span></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:03, 13 February 2022</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Testing equipment===</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Testing equipment===</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>For a mains adapter or charger, check the label on the device to see what its output is supposed to be and whether the output is AC or DC. Select the next range (AC or DC) which is higher than the rated output. Cheap unregulated adapters may register considerably more than their rated output with no load.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>For a mains adapter or charger, check the label on the device to see what its output is supposed to be and whether the output is <ins style="font-weight: bold; text-decoration: none;">[[Glossary:</ins>AC<ins style="font-weight: bold; text-decoration: none;">|AC]] </ins>or <ins style="font-weight: bold; text-decoration: none;">[[Glossary:DC|</ins>DC<ins style="font-weight: bold; text-decoration: none;">]]</ins>. Select the next range (AC or DC) which is higher than the rated output. Cheap unregulated adapters may register considerably more than their rated output with no load.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can check the voltages inside a piece of equipment to see whether power is getting through. You should never operate mains powered equipment with the covers off unless you fully understand the dangers and can do so without risk to yourself or any bystanders.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can check the voltages inside a piece of equipment to see whether power is getting through. You should never operate mains powered equipment with the covers off unless you fully understand the dangers and can do so without risk to yourself or any bystanders.</div></td></tr>
</table>Philiphttps://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=2205&oldid=prevPleriche at 21:55, 1 February 20192019-02-01T21:55:54Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 21:55, 1 February 2019</td>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">How </del>to <del style="font-weight: bold; text-decoration: none;">use </del>a multimeter.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">In this page we show you how </ins>to <ins style="font-weight: bold; text-decoration: none;">choose </ins>a multimeter <ins style="font-weight: bold; text-decoration: none;">and how to use it for fault finding and testing</ins>.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Work in progress - pics/diagrams to be added.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><!--</ins>Work in progress - pics/diagrams to be added.<ins style="font-weight: bold; text-decoration: none;">--></ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Summary==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Summary==</div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Choosing a multimeter==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Choosing a multimeter==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Img_2177a.jpg|180px|thumb|right|Digital multimeters.]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Img_2177a.jpg|180px|thumb|right|Digital multimeters.]]</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Multimeters come in two sorts: analogue (with a dial), and much more commonly, digital. There are <del style="font-weight: bold; text-decoration: none;">very </del>few occasions when an analogue multimeter would be better, and the digital variety is in any case much more robust.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Multimeters come in two sorts: analogue (with a dial), and much more commonly, digital. There are <ins style="font-weight: bold; text-decoration: none;">only a </ins>few occasions when an analogue multimeter would be better, and the digital variety is in any case much more robust <ins style="font-weight: bold; text-decoration: none;">and probably cheaper</ins>.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Apart from a multimeter designed mainly for auto-electrics, even the cheapest (under £5 on eBay) will have most if not all the functions you will need <del style="font-weight: bold; text-decoration: none;">commonly</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Apart from a multimeter designed mainly for auto-electrics, even the cheapest (under £5 on eBay) will have most if not all the functions you will <ins style="font-weight: bold; text-decoration: none;">commonly </ins>need.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The minimum functions you should look for are DC Volts (2V up to 200V), AC Volts (500V) and resistance (200Ω up to 2000kΩ).</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The minimum functions you should look for are DC Volts (2V up to 200V), AC Volts (500V) and resistance (200Ω up to 2000kΩ).</div></td></tr>
</table>Plerichehttps://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=2072&oldid=prevPleriche: /* Measuring Current */2018-08-27T16:31:43Z<p><span dir="auto"><span class="autocomment">Measuring Current</span></span></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can, for example, test how much current a battery powered radio is taking and so estimate how long you can expect the batteries to last. Breaking the circuit can be a little tricky but one way to do it is to glue a strip of aluminium foil to each side of a piece of paper, making sure there is no contact between the two pieces of foil, then inserting it between two of the batteries or between one of them and the battery compartment contact. You can now touch the multimeter probes onto the two pieces of foil in order to complete the circuit and allow you to switch the radio on. If, for example, the radio takes 200mA and the batteries are rated as 2000mAh (milliamp-hours) they should last about 10 hours.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can, for example, test how much current a battery powered radio is taking and so estimate how long you can expect the batteries to last. Breaking the circuit can be a little tricky but one way to do it is to glue a strip of aluminium foil to each side of a piece of paper, making sure there is no contact between the two pieces of foil, then inserting it between two of the batteries or between one of them and the battery compartment contact. You can now touch the multimeter probes onto the two pieces of foil in order to complete the circuit and allow you to switch the radio on. If, for example, the radio takes 200mA and the batteries are rated as 2000mAh (milliamp-hours) they should last about 10 hours.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<del style="font-weight: bold; text-decoration: none;">Theory</del>]]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<ins style="font-weight: bold; text-decoration: none;">Skills</ins>]]</div></td></tr>
</table>Plerichehttps://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=1457&oldid=prevPleriche: /* Measuring Current */2017-05-11T10:01:25Z<p><span dir="auto"><span class="autocomment">Measuring Current</span></span></p>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Measuring Current==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Measuring Current==</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[File:Img_2158a.jpg|180px|thumb|right|To measure current, the test meter itself must be part of the circuit.]]You will not often need to measure current (the Amps ranges), but when you do, it's very important to understand that you must break the circuit and place the test probes across the break, so that the current has to pass through the multimeter. If you connect it directly across a supply such as the terminals of a battery, it will offer very little resistance and an excessive current will flow, <del style="font-weight: bold; text-decoration: none;">with </del>the possibility of damaging the multimeter or the equipment under test.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[File:Img_2158a.jpg|180px|thumb|right|To measure current, the test meter itself must be part of the circuit.]]You will not often need to measure current (the Amps ranges), but when you do, it's very important to understand that you must break the circuit and place the test probes across the break, so that the current has to pass through the multimeter. If you connect it directly across a supply such as the terminals of a battery, it will offer very little resistance and an excessive current will flow<ins style="font-weight: bold; text-decoration: none;">. If you're lucky</ins>, <ins style="font-weight: bold; text-decoration: none;">this will simply blow a fuse inside </ins>the <ins style="font-weight: bold; text-decoration: none;">multimeter, which you'll have to replace, but if not, there is a </ins>possibility of damaging the multimeter or the equipment under test.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>You can, for example, test how much current a battery powered radio is taking and so <del style="font-weight: bold; text-decoration: none;">determine </del>how long you can expect the batteries to last. Breaking the circuit can be a little tricky but one way to do it is to glue a strip of aluminium foil to each side of a piece of paper, making sure there is no contact between the two pieces of foil, then inserting it between two of the batteries<del style="font-weight: bold; text-decoration: none;">, </del>or one of them and the battery compartment contact. You can now touch the multimeter probes onto the two pieces of foil in order to complete the circuit and allow you to switch the radio on. If, for example, the radio takes 200mA and the batteries are rated as 2000mAh (milliamp-hours) they should last about 10 hours.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>You can, for example, test how much current a battery powered radio is taking and so <ins style="font-weight: bold; text-decoration: none;">estimate </ins>how long you can expect the batteries to last. Breaking the circuit can be a little tricky but one way to do it is to glue a strip of aluminium foil to each side of a piece of paper, making sure there is no contact between the two pieces of foil, then inserting it between two of the batteries or <ins style="font-weight: bold; text-decoration: none;">between </ins>one of them and the battery compartment contact. You can now touch the multimeter probes onto the two pieces of foil in order to complete the circuit and allow you to switch the radio on. If, for example, the radio takes 200mA and the batteries are rated as 2000mAh (milliamp-hours) they should last about 10 hours.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Theory]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Theory]]</div></td></tr>
</table>Plerichehttps://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=1456&oldid=prevPleriche: /* Measuring Continuity and Resistance */2017-05-11T09:56:06Z<p><span dir="auto"><span class="autocomment">Measuring Continuity and Resistance</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 09:56, 11 May 2017</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l51">Line 51:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Measuring Continuity and Resistance==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Measuring Continuity and Resistance==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Img_2148a.jpg|180px|thumb|right|Measuring the resistance of your fingers. (You may have to moisten your finger tips.)]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Img_2148a.jpg|180px|thumb|right|Measuring the resistance of your fingers. (You may have to moisten your finger tips.)]]</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The resistance (Ω or Ohms) ranges measure [[Electric_circuits,_volts_amps_watts_and_ohms#Ohms_-_resistance_isn.27t_futile|resistance]]. This is a measure of how easily an electric current can pass. With the probes not touching anything you should <del style="font-weight: bold; text-decoration: none;">bet </del>an out of range condition.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The resistance (Ω or Ohms) ranges measure [[Electric_circuits,_volts_amps_watts_and_ohms#Ohms_-_resistance_isn.27t_futile|resistance]]. This is a measure of how easily an electric current can pass. With the probes not touching anything you should <ins style="font-weight: bold; text-decoration: none;">get </ins>an out of range condition.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As an experiment, put the multimeter on the highest Ω range and hold the two probe tips in the fingers of each hand. If you don't get a reading, hold the probe tips more tightly or moisten your fingers. You will find the reading decreases as you grip the probes more tightly and the resistance through your body is reduced. (Yes, electricity is passing through your body, but this is no more dangerous than handling an AA battery.)</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As an experiment, put the multimeter on the highest Ω range and hold the two probe tips in the fingers of each hand. If you don't get a reading, hold the probe tips more tightly or moisten your fingers. You will find the reading decreases as you grip the probes more tightly and the resistance through your body is reduced. (Yes, electricity is passing through your body, but this is no more dangerous than handling an AA battery.)</div></td></tr>
</table>Plerichehttps://wiki.restarters.net/index.php?title=How_to_use_a_multimeter&diff=1303&oldid=prevPleriche at 22:50, 25 December 20162016-12-25T22:50:53Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:50, 25 December 2016</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l83">Line 83:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can, for example, test how much current a battery powered radio is taking and so determine how long you can expect the batteries to last. Breaking the circuit can be a little tricky but one way to do it is to glue a strip of aluminium foil to each side of a piece of paper, making sure there is no contact between the two pieces of foil, then inserting it between two of the batteries, or one of them and the battery compartment contact. You can now touch the multimeter probes onto the two pieces of foil in order to complete the circuit and allow you to switch the radio on. If, for example, the radio takes 200mA and the batteries are rated as 2000mAh (milliamp-hours) they should last about 10 hours.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>You can, for example, test how much current a battery powered radio is taking and so determine how long you can expect the batteries to last. Breaking the circuit can be a little tricky but one way to do it is to glue a strip of aluminium foil to each side of a piece of paper, making sure there is no contact between the two pieces of foil, then inserting it between two of the batteries, or one of them and the battery compartment contact. You can now touch the multimeter probes onto the two pieces of foil in order to complete the circuit and allow you to switch the radio on. If, for example, the radio takes 200mA and the batteries are rated as 2000mAh (milliamp-hours) they should last about 10 hours.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<del style="font-weight: bold; text-decoration: none;">General</del>]]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<ins style="font-weight: bold; text-decoration: none;">Theory</ins>]]</div></td></tr>
</table>Pleriche