Direct current power supply with a transistor chopper

Details Direct current power supply with a transistor chopper Direct current power supply with a transistor chopper

1975-03-17

1977-07-05

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

323 9, 323DIG1, 363124, 363 16, G05F 158

Patent

active

040342816

ABSTRACT:
A source of direct current has its opposite polarity terminals connected to an electrical load via a transistor functioning as a chopper. A reactor is provided which comprises a primary winding also connected between the DC source and the load, a secondary winding adapted to apply a biasing voltage across the base and emitter of the transistor, and a tertiary winding constituting a part of the energy release circuit through which the energy stored in the reactor during each conducting period of the transistor is released. A base control circuit in the form of, for instance, a voltage regulating diode is connected to the base of the transistor. The transistor performs the desired "chopping" or current interrupting function to permit the delivery of substantially constant DC power from the DC source to the load.

REFERENCES:
patent: 2920259 (1960-01-01), Light
patent: 2994029 (1961-07-01), Bixby
patent: 3005147 (1961-10-01), Thomas
patent: 3115600 (1963-12-01), Brolin
patent: 3273050 (1966-09-01), Pratt
patent: 3548291 (1970-12-01), Heaslett
patent: 3566253 (1971-02-01), O'Neill
patent: 3628047 (1971-12-01), Cronin et al.
patent: 3638103 (1972-01-01), Birchenough
patent: 3641424 (1972-02-01), Kuykendall
patent: 3684924 (1972-08-01), Miller
patent: 3742371 (1973-06-01), Seibt et al.
patent: 3809998 (1974-05-01), Mansson
patent: 3819986 (1974-06-01), Fukuoka

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