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  2. Form factor (electronics) - Wikipedia

    en.wikipedia.org/wiki/Form_factor_(electronics)

    In electronics or electrical engineering the form factor of an alternating current waveform (signal) is the ratio of the RMS (root mean square) value to the average value (mathematical mean of absolute values of all points on the waveform). [1] It identifies the ratio of the direct current of equal power relative to the given alternating ...

  3. Derating - Wikipedia

    en.wikipedia.org/wiki/Derating

    Power semiconductor devices have a maximum power dissipation rating usually quoted at a case temperature of 25 °C (77 °F). The datasheet for the device also includes a derating curve which indicates how much a device will dissipate without getting damaged at any given case temperature, and this must be taken into account while designing a system.

  4. Phantom power - Wikipedia

    en.wikipedia.org/wiki/Phantom_Power

    Adapter barrels, and dedicated power supplies, are made to accommodate T-powered microphones. In this scheme, 12 volts is applied through 180 ohm resistors between the microphone's "hot" terminal (XLR pin 2) and the microphone's "cold" terminal (XLR pin 3). This results in a 12-volt potential difference with significant current capability ...

  5. Electrical wiring in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring_in_the...

    Many accessories for electrical installations (e.g., wall sockets, switches) sold in the UK are designed to fit into the mounting boxes defined in BS 4662:2006—Boxes for flush mounting of electrical accessories—Requirements, test methods and dimensions, with an 86 mm × 86 mm square face plate that is fixed to the rest of the enclosure by ...

  6. Voltage-controlled resistor - Wikipedia

    en.wikipedia.org/wiki/Voltage-controlled_resistor

    Voltage-controlled resistors are one of the most commonly used analog design blocks: adaptive analog filters, [1] automatic gain-control circuits, clock generators, [2] compressors, [3] electrometers, [4] energy harvesters, [5] expanders, [6] hearing aids, [7] light dimmers, [8] modulators (mixers), [9] artificial neural networks, [10] programmable-gain amplifiers, [11] phased arrays, [12 ...

  7. Power over Ethernet - Wikipedia

    en.wikipedia.org/wiki/Power_over_Ethernet

    The standard introduces two additional power types: up to 51 W delivered power (Type 3) and up to 71.3 W delivered power (Type 4), optionally by using all four pairs for power. [10] Each pair of twisted pairs needs to handle a current of up to 600 mA (Type 3) or 960 mA (Type 4). [ 11 ]

  8. Choke (electronics) - Wikipedia

    en.wikipedia.org/wiki/Choke_(electronics)

    Common-mode choke with two 20 mH windings, rated to handle 2 amperes. In electronics, a choke is an inductor used to block higher-frequency alternating currents (AC) while passing direct current (DC) and lower-frequency ACs in a circuit.

  9. Electrolytic capacitor - Wikipedia

    en.wikipedia.org/wiki/Electrolytic_capacitor

    From 1999 through at least 2010, a stolen recipe for such a water-based electrolyte, in which important stabilizers [47] [48] were absent, [49] led to the widespread problem of "bad caps" (failing electrolytic capacitors), leaking or occasionally bursting in computers, power supplies, and other electronic equipment, which became known as the ...

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