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28 March 2024

26 March 2024

21 March 2024

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14 March 2024

7 March 2024

6 March 2024

28 February 2024

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19 February 2024

  • 21:4121:41, 19 February 2024 diff hist +62 Glossary→‎Glossary of Terms
  • 21:3921:39, 19 February 2024 diff hist +438 N Glossary:EntropyCreated page with "Entropy (in information theory) is the amount of information or uncertainty in a piece of data, usually measured in bits. For example a 3 digit PIN or combination lock has 1,000 possible values and so has almost 10 bits of entropy, because 10 bits allows you to count up to 1,024. The entropy of a password or encryption key can be used directly to estimate how long it might take to crack, by trying all possible values." current
  • 21:2821:28, 19 February 2024 diff hist +582 Glossary→‎Glossary of Terms
  • 21:1421:14, 19 February 2024 diff hist +375 N Glossary:Signal to Noise RatioCreated page with "The Signal to Noise (or S/N) ratio is a measure of the strength of a signal compared to any background noise or interference, and is measured in decibels (dB). In an audio system, a high S/N ratio tells you that any background hiss will be imperceptible, and in data communications, the S/N ratio directly affects the rate at which you can transmit data." current
  • 21:1421:14, 19 February 2024 diff hist +355 N Glossary:DecibelCreated page with "Decibels (dB) are a measure of relative power, for example by what factor does an amplifier increase the power of a signal, or by what factor is a TV signal reduced by losses in the cable between the aerial and the receiver. It's a logarithmic scale, 3dB representing a doubling of power, hence the dB gains or losses in a signal path can simply be added."
  • 17:5217:52, 19 February 2024 diff hist +315 N Glossary:NoiseCreated page with "Noise, in the context of electronics and communications, is any unwanted interference tending to mask a desired signal. It can never be eliminated entirely as the electronics we're surrounded with all generates a certain amount of interference, and an electric current itself consists of a random flow of electrons." current
  • 17:4017:40, 19 February 2024 diff hist +372 N Glossary:MetadataCreated page with "Metadata is "data about data". For example, a document or spreadsheet may contain information about the author; a digital camera will normally embed information about the exposure, location, date and time of a photo. Sharing these or other types of file can result in undesirable information leakage and privacy issues if you're not aware of the metadata they may contain." current
  • 17:2417:24, 19 February 2024 diff hist +333 N Glossary:Decoupling capacitorCreated page with "Variations in the current drawn by one part of a circuit can affect the voltage of the supply, hence affecting another part of the circuit. "Decoupling capacitors" are commonly connected to a supply at various points in order to absorb these variations and minimise any such unwanted and detrimental couplings." current

17 February 2024

  • 11:4611:46, 17 February 2024 diff hist +320 N Glossary:WebmailCreated page with "Webmail is the method of managing your email entirely through a web page offered by your email provider, who stores your email on their own servers. The alternative is to manage your email through an applicationon your own device, which can give you greater flexibility in organising, searching and archiving your email."
  • 11:3511:35, 17 February 2024 diff hist +186 Glossary:X86No edit summary
  • 11:1411:14, 17 February 2024 diff hist +148 GlossaryNo edit summary
  • 11:1211:12, 17 February 2024 diff hist +27 Glossary:Right to RepairNo edit summary
  • 11:1011:10, 17 February 2024 diff hist +581 N Glossary:Right to RepairCreated page with "R2R or Right to Repair is the movement and campaign to make repair options widely available at reasonable cost, and to outlaw practices which unnecessarily make repair uneconomic, difficult or virtually impossible. Such practices include non-availability or exhorbitant cost of spare parts or service information, manufacturing methods making disassembly difficult, and parts pairing or software locks restricting repair to the manufacturer or their authorised agents. These..."

15 February 2024

14 February 2024

10 February 2024

  • 17:1817:18, 10 February 2024 diff hist +4 Glossary:Ladder logicNo edit summary current
  • 17:1717:17, 10 February 2024 diff hist −1 Glossary:PLCNo edit summary
  • 17:1617:16, 10 February 2024 diff hist +127 Glossary→‎Glossary of Terms
  • 17:1217:12, 10 February 2024 diff hist +300 N Glossary:Ladder logicCreated page with "Ladder logic is a kind of simple graphical programming language with its roots in relay logic, formerly much used for the control of industrial plant and machinery, but still used by PLCs in similar applications. More details are given in the Ladder logic."
  • 16:5916:59, 10 February 2024 diff hist +527 N Glossary:PLCCreated page with "A PLC or Programmable Logic Controller is a device much used in industry for controlling plant and machinery. It has a number of inputs which would be connected to sensors of different kinds, and outputs through which it can control switches, valves, motors, pumps etc in order for the machine or industrial process to operate correctly and safely. Their pre-electonic origins lie in relay logic and they are still normally programmed by similar Wikipedi..."
  • 16:3816:38, 10 February 2024 diff hist +162 Glossary:PLLNo edit summary current
  • 16:3216:32, 10 February 2024 diff hist +443 N Glossary:PhaseCreated page with "Two sounds (or electrical signals, or radio or light waves) may be identical, but if the waves of one lag in time behind those of the other, they're said to differ in phase. A phase difference is measured in degrees; 360 degrees represents a complete cycle so is the same as no phase difference, whereas with a phase difference of 180 degrees, the peak of one wave will coincide with the trough of the other and combined, they will cancel out." current

9 February 2024

31 January 2024

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22 January 2024

20 January 2024

  • 16:1616:16, 20 January 2024 diff hist +510 GlossaryNo edit summary
  • 15:5515:55, 20 January 2024 diff hist +341 N Glossary:ZIF ConnectorCreated page with "A ZIF or Zero Insertion Force connector is one in which a clamp of some sort is closed to make a good contact after the mating parts have been engaged, instead of the force being applied during insertion. They are commonly used for delicate ribbon cables, and for test rigs where many insertions of devices under test will routinely be made." current
  • 15:4415:44, 20 January 2024 diff hist +253 N Glossary:Thermal RunawayCreated page with "Some electronic components and circuits take more current as as they get hotter. Unchecked, this can lead to a positive feedback effect in which excessive heat causes still more heat to be generated, ending in a catastrophic failure and possibly a fire."
  • 15:3415:34, 20 January 2024 diff hist +315 N Glossary:SMDCreated page with "A Surface Mount Device or SMD is an electronic component designed to be mounted on the surface of a printed circuit board, instead of having leads which pass through holes in the board, soldered on the reverse side. Surface mount devices are generlly smaller, often much smaller than their through-hole equivalents."
  • 15:2815:28, 20 January 2024 diff hist +322 N Glossary:Ribbon cableCreated page with "Ribbon cables are cables with the conductors laid side by side to form a ribbon, rather than bound together in a bunch. The conductors may be individual insulated wires or may be copper tracks like those on a printed circuit board, laid on a fexible substrate. They are nomally used in conjunction with special connectors."
  • 12:3412:34, 20 January 2024 diff hist +415 N Glossary:NFCCreated page with "NFC or Near Field Communication is a set of technologies allowing electromagnetic communication between two devices, usually no more than a few centimeters apart. Each device contains a coil of wire and together they form a transformer through which data can be passed. A small amount of power is also often passed to an NFC device such as a security tag, having no power source of its own." current
  • 12:2212:22, 20 January 2024 diff hist +274 N Glossary:LIDARCreated page with "LIDAR or Light Imaging, Detection and Ranging is a technology similar to radar but using visible or infrared light instead of radio. As with radar, the distance of an object is determined by measuring the time taken for a pulse of light to be reflected off it and to return." current
  • 12:1412:14, 20 January 2024 diff hist +150 N Glossary:LDOCreated page with "A LDO or Low Drop-out regulator is a voltage regulator which produces the required output voltage even when the input voltage is only a little higher." current
  • 12:1012:10, 20 January 2024 diff hist +117 N Glossary:HapticsCreated page with "Haptics are technologies involving the sense of touch, such as the vibrate alert option offered by most smart phones." current

19 January 2024

  • 12:0312:03, 19 January 2024 diff hist +218 GlossaryNo edit summary
  • 11:5811:58, 19 January 2024 diff hist +684 N Glossary:Class A/B/C/DCreated page with "Class A, B, C and D refer to different design architectures for an amplifier, having different power efficiencies. Class A drives the output throughout a cycle, and is the least efficient. Class B drives the output for only a half cycle. Usually, a second Class B driver drives alternate half cycles. Class C drives the output for less than half a cycle and generally drives a tuned circuit to restore the output (typically in a transmitter) to a p..."
  • 11:4911:49, 19 January 2024 diff hist +314 N Glossary:PWMCreated page with "PWM or Pulse Width Modulation is a highly efficient method of power control in which the power is switched on and off very rapidly. The ouput is then smoothed with a capacitor and/or inductor and the relative on and off times then determine the power that is delivered."

14 January 2024

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