Current amplifier capable of selectively providing current gain

Details Current amplifier capable of selectively providing current gain Current amplifier capable of selectively providing current gain

1977-09-26

1979-07-10

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

323 23, 330296, G05F 308

Patent

active

041609441

ABSTRACT:
A current amplifier of the type having the principal conduction paths of first and second transistors connecting the input and output terminals respectively of the current amplifier to its common terminal, with a direct-coupled feedback connection between the input terminal and an interconnection of the control electrodes of the first and second transistors, is provided with capability for selectively providing or not providing current gain between its input and output terminals. To this end, a third transistor of complementary conductivity type has its principal conduction path included in the direct coupled feedback connection, being arranged to have its control electrode selectively clamped to the common terminal of the current amplifier to cause the current amplifier to exhibit current gain between its input and output terminals.

REFERENCES:
patent: 3813607 (1974-05-01), Voorman
patent: 3843933 (1974-10-01), Ahmed
patent: 3973215 (1976-08-01), Ahmed
patent: 3982171 (1976-09-01), Gersbach
patent: 4045694 (1977-08-01), Ahmed
patent: 4063032 (1977-12-01), Willcocks

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