Method and apparatus for driving capacitive-type load

Details Method and apparatus for driving capacitive-type load Method and apparatus for driving capacitive-type load

1987-09-09

1988-08-30

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310316, 310328, 123478, 123498, H01L 4108

Patent

active

047679590

ABSTRACT:
A method and apparatus for driving a capacitive-type load using a direct current power source, a charging circuit connected in series to the load, a discharging circuit connected in parallel to the load, and an electric circuit for controlling the charging and discharging circuits, and wherein at least one of the charging and discharging circuits has a primary coil, and a secondary coil coupled to the primary coil restores energy, generated when the charging or discharging is turned OFF, to the power source. This provides a highly efficient driving by a restoration of energy.

REFERENCES:
patent: 3800170 (1974-03-01), Kline et al.
patent: 4126867 (1978-11-01), Stevenson, Jr.
patent: 4398204 (1983-08-01), Dietrich et al.
patent: 4570098 (1986-02-01), Tomita et al.
patent: 4593658 (1986-06-01), Moloney
patent: 4644212 (1987-02-01), Moritugu et al.
patent: 4705003 (1987-11-01), Sakakibara et al.

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