Up-and-down chopper circuit

Details Up-and-down chopper circuit Up-and-down chopper circuit

1977-09-07

1979-07-10

Shoop, William M.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

307240, 323 25, 323 22T, H02M 700

Patent

active

041610237

ABSTRACT:
An improved Up-and-Down Chopper Circuit is provided which is useful for voltage regulation in a bi-directional DC power system. In the down mode, power is switched from a DC power source to a lower voltage energy storing load while in the up mode stored energy in the load is transferred to the higher voltage source. The system uses Darlington transistor switches in a conventional connection. The improvement relates to circuit additions to eliminate the effects of inter-electrode capacitance inherent with this Darlington transistor switching arrangement.

REFERENCES:
patent: 3093790 (1963-06-01), Ehret
patent: 3177422 (1965-04-01), Schlereth
patent: 3400319 (1968-09-01), Stich
patent: 3702963 (1972-11-01), Donovan
patent: 3748560 (1973-07-01), Sawa et al.
patent: 4041367 (1977-08-01), Gold et al.

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