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Trimmer (electronics)

 

 
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Trimmer (electronics)
 
 
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A trimmer 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. Trimmers can be variable resistors (potentiometer
Potentiometer

A potentiometer is a three-terminal resistor with a sliding contact that forms an adjustable voltage divider. If only two terminals are used , it acts as a variable resistor or Rheostat....
s) or variable capacitor
Capacitor

A capacitor or condenser is a Passive component electronic component consisting of a pair of electrical conductor separated by a dielectric....
s. They are common in precision circuitry like A/V components, and may need to be adjusted when the equipment is serviced.






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Pcb Variable Resistors
A trimmer 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. Trimmers can be variable resistors (potentiometer
Potentiometer

A potentiometer is a three-terminal resistor with a sliding contact that forms an adjustable voltage divider. If only two terminals are used , it acts as a variable resistor or Rheostat....
s) or variable capacitor
Capacitor

A capacitor or condenser is a Passive component electronic component consisting of a pair of electrical conductor separated by a dielectric....
s. They are common in precision circuitry like A/V components, and may need to be adjusted when the equipment is serviced. Unlike other variable controls, trimmers are mounted directly on circuit boards, turned with a small screwdriver
Screwdriver

The screwdriver is a device specifically designed to insert and tighten, or to loosen and remove, screws. The screwdriver is made up of a head or tip, which engages with a screw, a mechanism to apply torque by rotating the tip, and some way to position and support the screwdriver....
 and rated for many fewer adjustments over their lifetime. In 1952, Marlan Bourns
Bourns, Inc.

Bourns, Inc. is an United States electronics component manufacturer headquartered in Riverside, California. The company was founded in 1947 by Marlan and Rosemary Bourns, and is best known for its precision potentiometers and other resistive products....
 patented the world's first trimming potentiometer, trademarked "Trimpot".