Electrical transmission or interconnection systems – Capacitor – Parallel-charge – series-discharge
Patent
1992-03-02
1993-08-17
Pellinen, A. D.
Electrical transmission or interconnection systems
Capacitor
Parallel-charge, series-discharge
363 60, H02M 318
Patent
active
052372090
ABSTRACT:
A charge pump circuit for providing a bipolar voltage output at substantially double the unipolar voltage input source includes first and second voltage input terminals; a first and a second capacitor; a first switching device for selectively connecting first and second capacitors across the input terminals to charge each to the voltage of the input source; first and second voltage output terminals; a second switching device for selectively connecting the capacitors in series between one of the input terminals and one of the output terminals to generate a first polarity voltage which is substantially double the voltage of the input source; a third switching device for selectively connecting at least one of the capacitors in series between the other of the input terminals and the other of the output terminals to generate a second polarity voltage which is substantially double the voltage of the input source; and a clock for sequentially, selectively actuating the first, second and third switching devices.
REFERENCES:
patent: 4106086 (1978-08-01), Holbrook et al.
patent: 4199806 (1980-04-01), Patterson, III
patent: 4398099 (1983-08-01), Benoit-Gonin et al.
patent: 4797899 (1989-01-01), Fuller et al.
patent: 5051882 (1991-09-01), Grimm et al.
Analog Devices Inc.
Elms Richard T.
Pellinen A. D.
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