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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3360Y-1-202LF


Potentiometers 6MM PANEL CONTRL 2K ST COND PLASTIC
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Bourns 60
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USD 2.5806
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PR185-100K-A16P1


Potentiometer: shaft; single turn; 100kO; 200mW; ±20%; on panel
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Telpod 60
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USD 2.964
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SM-42X104


Trimmer Resistors - SMD 100 KW 5mm SMD 11 turn, Gull-wing, top-adjustment
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Nidec Copal 60
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USD 3.6831
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PTF01-151A-203B2


Bourns Slide Potentiometers 20Kohms Travel=100mm
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Bourns 60
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USD 5.0036
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RJR24FX104P


Trimmer Resistors - Through Hole 100ppm 100Kohms 25 TURNS NOM.
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Bourns 60
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USD 5.1491
Multiples of: 5

PRM162-K420K-102B1


Potentiometers PANEL CONTROL 18MM-ST-CARBON
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Bourns 60
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USD 12.1639
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6639S-1-203


Precision Potentiometers 20K 15% Bushing Mnt
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Bourns 60
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USD 15.3065
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3590S-4-203L


Bourns Precision Potentiometers 78"WW 20Kohms 0.25% 10turn
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Bourns 60
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USD 15.8591
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53C12500Z


Res Conductive Plastic POT 2.5K Ohm 10% 2W 1(Elec)/1(Mech)Turns 6.35mm (65.09 X 27.78 X 36.12mm) Solder Lug Panel Mount Automotive
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Honeywell 60
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USD 18.0698
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3262W-1-101LF


100 Ohms 0.25W, 1/4W PC Pins Through Hole Trimmer Potentiometer Cermet 12.0 Turn Top Adjustment
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Bourns 58
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USD 7.475
Multiples of: 1

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