Device and method for driving a capacitive actuator

Details Device and method for driving a capacitive actuator Device and method for driving a capacitive actuator

1999-02-16

2000-10-24

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H01L 4109

Patent

active

061372080

ABSTRACT:
A device and a method for driving at least one capacitive actuator, in particular a piezoelectrically operated fuel injection valve of an internal combustion engine, by a microprocessor-controlled control circuit. The device has a charging capacitor which can be recharged by an energy source, which charges the at least one actuator via switches controlled by the control circuit, and into which the actuator is discharged again.

REFERENCES:
patent: 5208505 (1993-05-01), Mitsuyasu
patent: 5477831 (1995-12-01), Akaki et al.
patent: 5479062 (1995-12-01), Yoshino

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