Transistor bridge voltage rectifier circuit

Details Transistor bridge voltage rectifier circuit Transistor bridge voltage rectifier circuit

1982-06-28

1985-02-26

Rubinson, G. Z.

Electric power conversion systems

Phase conversion without intermediate conversion to d.c.

By dynamoelectric machine converter

363127, H04M 174

Patent

active

045019339

ABSTRACT:
A transistor bridge rectifier circuit, which is capable of being monolithically integrated, is designed to connect the electronic circuits in a user's telephone set to a two-wire telephone line. The circuit includes a transistor bridge with a "Graetz bridge" circuit arrangement, a current generator, a pair of current mirror circuits connected thereto, which alternately conduct according to the polarity of the line, and a pair of controlled current gain transistors, each controlled by the output of one of the two current mirror circuits. The transistors belonging to the opposite sides of the bridge, the bases of which are respectively connected to the emitter and collector of the same controlled current gain transistor, are biased with the same base current which flows through the controlled current gain transistor.

REFERENCES:
patent: 3434034 (1969-03-01), Garber et al.
patent: 4275277 (1981-06-01), Ferrieu
patent: 4321430 (1982-03-01), Ferrieu
patent: 4374306 (1983-02-01), Lohr

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