Drive circuit for a piezoelectric actuator

Details Drive circuit for a piezoelectric actuator Drive circuit for a piezoelectric actuator

1986-04-21

1987-04-14

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Miscellaneous systems

For particular load device

307128, 310316, 310317, 200181, H01L 4108

Patent

active

046581553

ABSTRACT:
A drive circuit for a piezoelectric actuator includes a pair of power input terminals for supplying either AC or DC power, with the piezoelectric actuator being connected between these power input terminals. A device for supplying current for driving the piezoelectric actuator in one direction is interposed between one of the power input terminals and an end of the piezoelectric actuator. Further, there is provided connected in parallel to the piezoelectric actuator a switching circuit which turns into a high resistance state when the device is on and serves as an active discharge path for the electric charges of the piezoelectric actuator.

REFERENCES:
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patent: 3743868 (1973-07-01), Kawada
patent: 3989042 (1976-11-01), Mitsui et al.
patent: 4044297 (1977-08-01), Nobue et al.
patent: 4054936 (1977-10-01), Ansai et al.
patent: 4065096 (1977-12-01), Frantz et al.
patent: 4093883 (1978-06-01), Yamamoto
patent: 4318062 (1982-03-01), Mitsui et al.
patent: 4376255 (1983-03-01), Kleinschmidt
patent: 4395651 (1983-07-01), Yamamoto
patent: 4409638 (1983-10-01), Sturman et al.
patent: 4431975 (1984-02-01), Podlesny
patent: 4520289 (1985-05-01), Sato et al.
patent: 4568849 (1986-02-01), Sato et al.

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