Piezoelectric drive circuit

Details Piezoelectric drive circuit Piezoelectric drive circuit

1997-05-08

1999-08-31

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4108

Patent

active

059457686

ABSTRACT:
A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes.

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Crystal Oscillator Circuits, by Robert J. Matthys, pp. 10-13, 52-56, 85-89, 1983.

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