Gimmick capacitor

A gimmick capacitor is a capacitor made by twisting two pieces of insulated wire together. The capacitance may be varied by loosening or tightening the winding. The available capacitance is on the order of 1pF/inch (0.4 pF/cm). [1]

Refs

  1. ↑ "... twisted-pair wire makes an excellent variable capacitor, sometimes called a gimmick" Pease, Robert A. (1991). Troubleshooting Analog Circuits (1st ed.). Butterworth-Heinemann. p. 22. ISBN 0-7506-9184-0.
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