Circuit for the load-proportional adjustment of the driving curr

Details Circuit for the load-proportional adjustment of the driving curr Circuit for the load-proportional adjustment of the driving curr

1981-09-02

1984-04-10

Mollins, James B.

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

330288, H03F 304

Patent

active

044424116

ABSTRACT:
Circuit for the load-proportional adjustment of the driving current of a single-ended output transistor of a transistor amplifier for a variable load of the output transistor, the output transistor having a base-emitter voltage and being operated in a common emitter circuit, having a control branch feeding the driving current to the output transistor, including a sensing transistor stage having an output circuit and being driven by the base-emitter voltage of the output transistor, a transistor serving as a driver transistor for the output transistor and being controlled by the control branch, and a coupling circuit through which current in the output circuit of the sensing transistor is feedable to the transistor serving as a driver transistor.

REFERENCES:
patent: 3701032 (1972-10-01), Steckler
patent: 4074181 (1978-02-01), Crowle

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