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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Hot 3006P-1-504


Trimmer Resistors - Through Hole 500K 3/4" 10% Sealed Multi Turn
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Bourns 300
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USD 1.3226
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HTL5K


5K TRIMPOT SIDE ADJ KVSF639A TRIMMER HORIZ/SIDE ADJUST
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Netech 298
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USD 0.1365
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W3329H-1-501


500R TRIMPOT ROUND SINGLE TRIMMER ROUND VERT/TOP ADJ
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Netech 291
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USD 0.1871
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433PW/501K


500R TRIMPOT 18 TURN TRIMMER HORIZ/SIDE ADJUST
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Meggitt 290
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USD 0.4217
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W3266X-1-103


10K TRIMPOT MULTI TURN TRIMMER VERT/SIDE ADJ
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Netech 290
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USD 0.5528
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W3006P-1-203


20K TRIMPOT MULTI TURN TRIMMER RECT. SIDE ADJ
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Netech 277
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USD 0.2148
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W3386P-1-203


20K TRIMPOT SINGLE TURN TRIMMER VERT/TOP ADJ
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Netech 275
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USD 0.1871
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W3386P-1-503


50K TRIMPOT SINGLE TURN TRIMMER VERT/TOP ADJ
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Netech 271
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USD 0.1871
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4290X103K


10K TRIMPOT TOP ADJ TRIMMER VERTICAL/TOP ADJ
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Meggitt 266
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USD 0.7678
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W3386F-1-104


100K TRIMPOT SINGLE TURN TRIMMER VERT/TOP ADJ
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Netech 195
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USD 0.2306
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