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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PV37W202C01B00


2 kOhms 0.25W, 1/4W PC Pins Through Hole Trimmer Potentiometer Cermet 12.0 Turn Top Adjustment
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Murata 260
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USD 1.043
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FT-63EP103


Trimmer Resistors - Through Hole 10 KW 6mm sq. single turn top adj.
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Nidec Copal 58
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USD 0.5136
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Hot 3299Z-1-105LF


Trimmer Resistors - Through Hole 1Mohms Standoffs Horizontal Adjust
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Bourns 58
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USD 0.5262
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TVP-1232-470R


Potentiometer: mounting; single turn; 470O; 100mW; ±20%; linear
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Telpod 58
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USD 0.6656
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PDB081-P11-104A3


Potentiometers 100K 8MM MICRO ROTARY POT
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Bourns 58
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USD 0.6728
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PDB181-E420F-503B


Bourns Potentiometers 50K SINGLE
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Bourns 58
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USD 0.6954
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3386U-1-103LF


Bourns Trimmer Resistors - Through Hole 38" 10Kohms 10% 0.5Watts Square
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Bourns 58
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USD 0.767
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409VA502M


Trimmer Resistors - Through Hole 5KOhm 1/2W Cermet
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TE Connectivity 58
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USD 0.8236
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1-1623858-1


Res Cermet Trimmer 5K Ohm 20% 0.5W(1/2W) 1(Elec)/1(Mech)Turns (8.8 X 12.7mm) Pin Thru-Hole Automotive
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TE Connectivity 58
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USD 0.8236
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PV32H253A02B00


Trimmer Resistors - Through Hole 25k ohm
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Bourns 58
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USD 0.8559
Multiples of: 1

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