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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3299W-1-500LF


50 Ohms 0.5W, 1/2W PC Pins Through Hole Trimmer Potentiometer Cermet 25.0 Turn Top Adjustment
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Bourns 379
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AUD 2.4095
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3352H-1-253


Trimmer Resistors - Through Hole 38"RND 25KOHMS 20% 0.5WATTS
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Bourns 379
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AUD 2.9038
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SM-42TA203


20 kOhms 0.25W, 1/4W J Lead Surface Mount Trimmer Potentiometer Cermet 11.0 Turn Side Adjustment
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Nidec Copal 379
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AUD 3.2817
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PTB0153-2010BPB103


Bourns Slide Potentiometers PANEL CONTROL 9MM-ST-CARBON
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Bourns 379
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AUD 5.919
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3314J-2-100E


Bourns Trimmer Resistors - SMD 4mm SQ 10ohm
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Bourns 378
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AUD 1.2272
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3006P-FN2-254LF


Bourns Trimmer Resistors - Through Hole 250K 34" 10% Sealed Mutlti Turn
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Bourns 378
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AUD 1.5286
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3361S-1-102G


Trimmer Resistors - SMD 1/4" SQ 1K 10% 0.5WATTS
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Bourns 378
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AUD 1.7333
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3314Z-GA4-501E


Trimmer Resistors - SMD 4mm SQ 500ohm
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Bourns 378
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AUD 2.1302
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270X232A103B2A1


Potentiometers 10Kohms 20% 10% AUD No Switch
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CTS 378
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AUD 4.6444
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T63YA104KT20


Trimmer Resistors - Through Hole 1/4" SQ V/ADJ 100K
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Vishay 374
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AUD 3.4222
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