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List of Trimmer Potentiometers
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About Trimmer Potentiometers
A trimmer potentiometer is a miniature adjustable electrical
component. They're designed for "set and forget" applications to "trim" the value of a
resistor in order to provide an exact gain, output voltage, or current. They are common in precision
circuitry like
A/V
components, calibrating instruments and setting the bias current on power
amplifiers. Trimmer potentiometers are mounted directly on
circuit boards, set with a small
screwdriver and designed for few adjustments during operation. They may either be single or multi-turn, with the
multi-turn used in applications that require more precise settings. They
can also be mounted either vertically or horizontally, depending on the
requirements for adjusting the component. In 1952, Marlan Bourns patented
the first trimming potentiometer, calling it the "Trimpot".
Performance Characteristics:
- Resistance range starts from 10 to 5 megohms..
- Voltage range is from 300 to 400 volts max
- Tolerance is ±10 % std.
- Temperature range is from -55 °C up to 125 °C.
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