About Potentiometers, Trimmers & Rheostats

Potentiometers, Trimmers & Rheostats

A potentiometer, trimmer, and rheostat are all three types of resistors that are adjustable. They are used to control the electric current by varying the resistance in the circuit. A potentiometer is an adjustable three-terminal resistor with a sliding contact (wiper) that moves across a resistive element to change resistance in a circuit. They are used in audio controls, light dimmers, and other applications that require adjustable resistance in the circuit. A trimmer is a miniature version of a potentiometer, and it’s used to make fine adjustments in electronics circuits. It can be used for voltage and current adjustments, and for tuning circuits for maximum performance. A rheostat is an adjustable two-terminal rotor, and it’s used to control the current in a circuit. It’s often used to control the speed of a motor or other electrical device.
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3329H-1-501


Trimmer Resistors - Through Hole 1/4"RND 500OHMS 10% 0.5WATTS
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Bourns 53
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USD 2.6048
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RJR26FW202R


Trimmer Resistors - Through Hole 100ppm 2Kohms 12 TURNS NOM.
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Bourns 53
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USD 6.7438
Multiples of: 55

409N10K


Potentiometers RESISTIVE & OPTICAL
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Honeywell 53
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USD 12.025
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3059L-1-502LF


Trimmer Resistors - Through Hole 5Kohms 10% 1-14" Wire Leads
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Bourns 53
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USD 12.535
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P16RP222MAB15


Potentiometers 2.2Kohms 20% Linear Plastic Red
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Vishay 53
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USD 14.9845
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P16YP223MAB15


Potentiometers 22Kohms 20% Linear Plastic Yellow
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Vishay 53
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USD 14.9845
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536-1-1-102


Precision Potentiometers 7/8" WW 1Kohms 10 Turns
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Vishay 53
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USD 15.7205
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3549S-1AB-103B


Bourns Precision Potentiometers PREC POT 10K .10% 78" 22MM DIA 10T WW
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Bourns 53
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USD 17.2644
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P11S1V0FRSW00103MA


Potentiometers 12.5mm Mod Pnl Pot Cermet
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Vishay 53
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USD 17.829
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CMU3541


Res POT 350K Ohm 2W 1(Elec)/1(Mech)Turn 6.35mm (38.1 X 29.4mm) Solder Lug Panel Mount
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Ohmite 53
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USD 17.955
Multiples of: 1

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