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  2. Electrical resistance and conductance - Wikipedia

    en.wikipedia.org/wiki/Electrical_resistance_and...

    Some resistors, particularly those made from semiconductors, exhibit photoconductivity, meaning that their resistance changes when light is shining on them. Therefore, they are called photoresistors (or light dependent resistors). These are a common type of light detector.

  3. Electronic Industries Alliance - Wikipedia

    en.wikipedia.org/wiki/Electronic_Industries_Alliance

    RMA Resistor Color Code Guide, circa 1945–1950. In 1924, 50 radio manufacturers in Chicago formed a trade group called the Associated Radio Manufacturers. [2] This organization was designed to control the licensing of the large number of radio patents so that each member could have access to all the relevant patents necessary to build radio transmitters, antennas and receivers.

  4. Electronics - Wikipedia

    en.wikipedia.org/wiki/Electronics

    Modern surface-mount electronic components on a printed circuit board, with a large integrated circuit at the top. Electronics is a scientific and engineering discipline that studies and applies the principles of physics to design, create, and operate devices that manipulate electrons and other electrically charged particles.

  5. Electronic symbol - Wikipedia

    en.wikipedia.org/wiki/Electronic_symbol

    An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may vary from country to country, or engineering ...

  6. Ferrite core - Wikipedia

    en.wikipedia.org/wiki/Ferrite_core

    In electronics, a ferrite core is a type of magnetic core made of ferrite on which the windings of electric transformers and other wound components such as inductors are formed. It is used for its properties of high magnetic permeability coupled with low electrical conductivity (which helps prevent eddy currents).

  7. Operational transconductance amplifier - Wikipedia

    en.wikipedia.org/wiki/Operational_trans...

    In the ideal OTA, the output current is a linear function of the differential input voltage, calculated as follows: = (+) where V in+ is the voltage at the non-inverting input, V in− is the voltage at the inverting input and g m is the transconductance of the amplifier.

  8. 25-pair color code - Wikipedia

    en.wikipedia.org/wiki/25-pair_color_code

    The color combinations are applied to the insulation that covers each conductor. Typically, one color is a prominent background color of the insulation, and the other is a tracer, consisting of stripes, rings, or dots, applied over the background. The background color always matches the tracer color of its paired conductor, and vice versa.

  9. Trimmer (electronics) - Wikipedia

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

    Trimmer potentiometers or "trimpots" A trimmer, or preset, is a miniature adjustable electrical component.It is meant to be set correctly when installed in some device, and never seen or adjusted by the device's user.