Output impedance compensation circuit

Details Output impedance compensation circuit Output impedance compensation circuit

1986-11-19

1988-09-13

Salce, Patrick R.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

323312, 307297, G05F 308

Patent

active

047712279

ABSTRACT:
A circuit is provided for reducing the output impedance of an emitter-follower transistor in which a positive feedback voltage proportional to the collector current of the emitter-follower transistor is provided to the base of the emitter-follower transistor when the emitter-follower transistor supplies current to a load. The circuit includes a resistor-ratioed current source which provides collector current to the emitter-follower transistor and which forces a current through a resistor connected to the base of the output transistor in proportion to the collector current.

REFERENCES:
patent: 3878471 (1975-04-01), Ahmed
patent: 3986152 (1976-10-01), Howell
patent: 4246500 (1981-01-01), Okada et al.
patent: 4413227 (1983-11-01), Johnson
patent: 4634959 (1987-01-01), Boeckmann
patent: 4686387 (1987-08-01), Rumelhard

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