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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392C250K


Potentiometers 392C2 SERIES 50K ohm
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Honeywell 37
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USD 21.05
Multiples of: 1

AS3603E


Res POT 500 Ohm 0.5W(1/2W) 1(Elec)/1(Mech)Turn 3.18mm (12.7 X 33.73mm) Solder Lug Panel Mount
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Ohmite 37
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USD 22.225
Multiples of: 2

14920F0GJSX13205KA


Potentiometers 1/2" SQ 2Mohms 7/8" Shaft Length
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Vishay 37
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USD 27.0657
Multiples of: 1

RT24C2X502


Trimmer Resistors - Through Hole 5K 5% 3/8" SQU MT SEALED WW
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Bourns 37
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USD 31.9312
Multiples of: 25

3057L-1-102


1 kOhms 1W Wire Leads Chassis Mount Trimmer Potentiometer Wirewound 22.0 Turn Side Adjustment
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Bourns 37
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USD 35.558
Multiples of: 1

3549H-1AC-202B


Bourns Precision Potentiometers PRECISION POT 2K .1% 78" 22MM DIA 10T
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Bourns 37
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USD 40.5381
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3SU1200-2PR10-1AA0


Potentiometer; 22mm; -25÷70°C; Ø22mm; IP67; 4.7kΩ; SIRIUS ACT
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Siemens 37
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USD 58.3128
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RES50RE


50 Ohm 1 Gang Linear Panel Mount Potentiometer None 1.0 Kierros Wirewound 12.5W Solder Lug
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Ohmite 37
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USD 64.8945
Multiples of: 1

WA2M028S503UC


Potentiometer, 50K Ohm, 10%, 0.5W(1/2W), 1(Elec)/1(Mech)Turn, 5/8" Shaft Length.
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Honeywell 37
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USD 106.9707
Multiples of: 1

534B1202JC


2k Ohm 1 Gang Linear Panel Mount Potentiometer None 10.0 Kierros Wirewound 2W Solder Lug
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Vishay 0
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USD 11.5143
Multiples of: 1

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