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 54CAD-E28-B13/P50L


5k Ohm 1 Gang Linear Panel Mount Potentiometer Push-Pull, DPDT 1.0 Kierros Conductive Plastic 0.5W, 1/2W PC Pins
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Bourns 102
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USD 21.551
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3590S-1-202L


2k Ohm 1 Gang Linear Panel Mount Potentiometer None 10.0 Kierros Wirewound 2W Solder Lug
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Bourns 29
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USD 11.9125
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P16YP103MAB15


Potentiometers 10Kohms 20% Linear Plastic Yellow
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USD 13.9415
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357B2202MAB251S22


Potentiometers
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USD 16.7535
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6637S-1-103


Precision Potentiometers 10K 10% Bushing Mnt
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Bourns 29
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USD 19.5
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CMU1531E


Res POT 15K Ohm 2W 1(Elec)/1(Mech)Turn 6.35mm (38.1 X 29.4mm) Solder Lug Panel Mount
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Ohmite 29
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USD 20.225
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3290W-1-503


Trimmer Resistors - Through Hole 3/8" 50Kohms Sealed Vertical Adjust 5%
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Bourns 29
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USD 23.851
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43C150K


Potentiometers 43 Series Industrial Potentiometer, Wire Wound Element, Solder lug Terminals, 2 W Power Rating, 50 K Ohms Resistance Value
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Honeywell 29
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USD 24.4125
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CU1021E


Res POT 1K Ohm 2W 1(Elec)/1(Mech)Turn 6.35mm (66.68 X 29.4mm) Solder Lug Panel Mount
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Ohmite 26
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USD 22.815
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536-1-1-501


Precision Potentiometers 7/8" WW 500ohms 10 Turns
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USD 16.123
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