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potentiometer

potentiometer

1 9.6
A small electrical device with a knob that changes voltage in a circuit
  • noun
  • /pəˌtɛnʃiˈɑːmɪtər/
  • Specialized
translation icon : potenciómetro
  • So if I start turning this potentiometer, you can see that the contrast on the display changes.
  • trimming potentiometers
  • precision potentiometer
  • linear potentiometers

Examples

  • The sensor, which is user-selectable for light operation or dark operation, has an adjustable power potentiometer.

    Academic text (2001)
  • The 10-turn counting temperature setpoint potentiometer provides for 1,000 numerical increments of adjustment.

    Academic text (1995)
  • So if this is the potentiometer here, then basically the leg here and the leg here are already short.

  • First I try to connect my potentiometer like so.

  • We tune the potentiometer until it just turns off like this.

  • Adjust the potentiometer so the slit of light gets larger.

    Academic text (1993)
  • Speed was adjusted by turning the speed potentiometer to a 1 m/sec maximum speed as measured over a known distance.

    Academic text (1995)
  • A power supply and signal conditioner unit powers and amplifies the potentiometer and load cell.

    Academic text (2001)
  • Trimming potentiometers are board-level electromechanical devices that correct voltage resistance errors in circuits.

    Academic text (2000)
  • You can rotate the potentiometer to adjust the output voltage in the circuit.

Synonyms

pot
vspotentiometer
  • Specialized
2 8.4

A small control used to change volume or brightness in electronic devices

is the three-terminal device used specifically to change voltage rather than general resistance control
variable resistor
vspotentiometer
  • Specialized
5.3

A part that changes the amount of electric current in a circuit

is the specific three-terminal device used to vary voltage rather than control current

How Adjustable

variable resistor
  • Specialized
5.3
rheostat
  • Specialized
1 9.4
potentiometer
  • Specialized
1 9.6
trimmer
  • Specialized
7.4

Surface Forms

potentiometer singular

Morphology

potentiometer = potential (opaque) = potential + meter

The word is historically built from 'potential' + 'meter', but the modern sense 'variable resistor' is a specialized technical meaning that is not directly recoverable from the components.

Etymology

Potentiometer comes from the parts potentia 'power' or 'potential' and -meter 'measure', the same -meter in thermometer. So it is a device for setting or changing electrical 'potential', which is why a potentiometer is used to adjust voltage in a circuit.