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  2. File:Resistor, Rheostat (variable resistor), and ...

    en.wikipedia.org/wiki/File:Resistor,_Rheostat...

    English: American-style resistor (a), rheostat (variable resistor) (b), and potentiometer (c) electrical schematic symbols. Date: 4 December 2011: Source: Own work:

  3. 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 ...

  4. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    voltage regulators are often "U" for IC, pots and trimmers often "R" for resistor X: Socket connector for another item not P or J, paired with the letter symbol for that item (XV for vacuum tube socket, XF for fuse holder, XA for printed circuit assembly connector, XU for integrated circuit connector, XDS for light socket, etc.) X, XTAL, Y

  5. Potentiometer - Wikipedia

    en.wikipedia.org/wiki/Potentiometer

    The word rheostat was coined in 1843 by Sir Charles Wheatstone, [7] from the Greek ῥέος rheos meaning "stream", and - στάτης-states (from ἱστάναι histanai, "to set, to cause to stand") meaning "setter, regulating device", [8] [9] [10] which is a two-terminal variable resistor. For low-power applications (less than about 1 ...

  6. Circuit diagram - Wikipedia

    en.wikipedia.org/wiki/Circuit_diagram

    The internationally standardized symbol for a resistor is therefore now simplified to an oblong, sometimes with the value in ohms written inside, instead of the zig-zag symbol. A less common symbol is simply a series of peaks on one side of the line representing the conductor, rather than back-and-forth. Wire crossover symbols for circuit diagrams.

  7. L pad - Wikipedia

    en.wikipedia.org/wiki/L_pad

    The L pad attenuates the signal by having two separate rheostats connected in an "L" configuration (hence the name). One rheostat is connected in series with the loudspeaker and, as the resistance of this rheostat increases, less power is coupled into the loudspeaker and the loudness of sound produced by the loudspeaker decreases.

  8. Resistor - Wikipedia

    en.wikipedia.org/wiki/Resistor

    Various resistor types of different shapes and sizes. A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

  9. Trimmer (electronics) - Wikipedia

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

    A: preset resistor, B: preset resistor (alternate), C: preset potentiometer, D preset potentiometer (alternate), E: preset inductor, F: preset capacitor. In circuit diagrams, the symbol for a variable component is the symbol for a fixed component with a diagonal line through it terminating in an arrow head.