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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157S502MB9002


POTENTIOMETER, SERVO 0.5% LIN 5K
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Vishay 38
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USD 55.714
Multiples of: 1

3700S-1-103L


10k Ohm 1 Gang Linear Panel Mount Potentiometer None 10.0 Kierros Wirewound 1W Solder Lug
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Bourns 38
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USD 93.817
Multiples of: 1

ST-4ETB203


TRIMMER POT, CERMET, 20K, 1TURN, SMD; Track Resistance:20kohm; No. of Turns:1Turns; Potentiometer Mounting:Surface Mount Device; Product Range:ST-4 Series; Power Rating:250mW; Resistance Tolerance:± 20%; Temperature Coefficient:± 100ppm/C; Automotive Qualification Standard:-; MSL:-; SVHC:No SVHC (15-Jan-2018)
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Nidec Copal 37
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USD 0.492
Multiples of: 1

Hot 3362H-1-101LF


100 Ohms 0.5W, 1/2W PC Pins Through Hole Trimmer Potentiometer Cermet 1 Turn Top Adjustment
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Bourns 37
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USD 0.6085
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3386P-1-254


Trimmer Resistors - Through Hole 3/8"SQ 250KOHMS 10% 0.5WATTS
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Bourns 37
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USD 1.3084
Multiples of: 100

3006P-1-474LF


Trimmer Resistors - Through Hole 47kOhms 3/4" 10% Sealed Multi Turn
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Bourns 37
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USD 1.534
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3386B-1-501LF


Trimmer Resistors - Through Hole 3/8" 500ohms 10% 0.5Watts Square
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Bourns 37
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USD 1.89
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PVG5H101C03R00


100 Ohms 0.25W, 1/4W J Lead Surface Mount Trimmer Potentiometer Cermet 11.0 Turn Side Adjustment
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Murata 37
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USD 1.9191
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RK0971110-F25-31-B103


Potentiometers 9.5MM POTENTIOMETER, 1-SHAFT, 1-UNIT
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ALPS 37
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USD 1.9716
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3299Y-1-205


Trimmer Resistors - Through Hole 2Mohms Standoffs Vertical Adjust 3/8"
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Bourns 37
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USD 2.5375
Multiples of: 10

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