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Introduction • On Precision Pots • General Product Definitions • Construction Details • Multiturn Precision Pots • Resistive Elements • Terminals • Shaft-Rotor Assembly • Mechanical Rotation • Mounting Methods • 3540 Family • 3590 Family • Knobpot 3600 Family • Single-Turn Precision Pots • 6537/6637 Family • 6539/6639 Family • 3680 Pushbutton Family • Special Precision Pots • Shafts • Mounting Styles • Bearings • Torque • Linearity • Wiper Load • Low Current Applications • High Rotational Speed • Angles • Additional Taps • Sealed Units • Multicup Assemblies • Envelopes •
Environmental • Competition •
Useful Terms
Construction Details
A single-turn precision potentiometer has a similar construction to a panel control. Typical features which differentiate a precision potentiometer include:
- Terminals which are precisely machined and gold plated
- Wipers which are generally composed of precious metal
- Ball bearings for better ergonomic feel and longer life
- Multi-turn precision potentiometers are assembled with wirewound or hybrid (wirewound with a conductive plastic coating) elements
- Single-turn precision potentiometers are assembled with conductive plastic elements
- Most single-turn precision potentiometers are continuous rotation, although a mechanical stop is available as a special order
Multiturn and Single-Turn Precision Potentiometers
The multiturn and single-turn precision potentiometers have exactly the same basic parts as a panel control:
- Housing
- Resistive element
- Wiper
- Terminals
- Shaft
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