Circuit arrangement for the controlled supply to a load

Details Circuit arrangement for the controlled supply to a load Circuit arrangement for the controlled supply to a load

1982-01-11

1984-04-03

Shoop, William M.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

320 40, H02M 3335

Patent

active

044411472

ABSTRACT:
A circuit for supplying a constant DC voltage to an electrical load and, alternatively, a relatively constant DC current to a storage battery connected in parallel with the electrical load, the circuit including a blocking oscillator having a transformer with primary and secondary windings, a switching transistor having first and second load terminals and a control terminal, and a first resistor, the primary winding, the load terminals of the switching transistor and the first resistor being connected in series across an input voltage source, a rectifier connected in series with the electrical load across the secondary winding, a controlling transistor having first and second load terminals and a control terminal, a reference voltage element connected across the load terminals of the controlling transistor and connected to the control terminal of the switching transistor, and a Zener diode having an anode connected to the control terminal of the controlling transistor and a cathode connected to the parallel arrangement of the electrical load and the storage battery.

REFERENCES:
patent: 3568038 (1971-03-01), Enders et al.
patent: 3702961 (1972-11-01), Erickson
patent: 4005351 (1977-01-01), Blum
patent: 4155081 (1979-05-01), Haglund
patent: 4316242 (1982-02-01), Colangelo et al.
patent: 4376263 (1983-03-01), Pittroff et al.

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