Introduction - Basic Potentiometer Theory • Resistors • Building Potentiometers • Modern Variable Resistive Devices • Applications Modes • The Parts of a Potentiometer • Resistive Elements • Cermet • Conductive Plastic • Hybrid Elements • Terminations • Contacts • Electrical Parameters • Total Resistance • Minimum Resistance • End Resistance • Contact Resistance • Contact Resistance Variation • Equivalent Noise Resistance • Output Smoothness • Adjustability • Temperature Coefficient • Resolution • Conformity • Linearity • Power Rating • Summary of Electrical Parameters • Useful Terms

The Parts of a Potentiometer

A potentiometer is composed of three essential parts:

  • a resistive element
  • some terminations
  • a contact or wiper

Figure 2.39


In Figure 2.39 you can see each of these parts.

When discussing Bourns variable resistive products with customers, you will be more effective, and feel more confident, if you are familiar with the materials that are used to make these parts. To help you achieve these benefits, we offer the following information on each part.