Output circuit

Details Output circuit Output circuit

2006-08-15

2006-08-15

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

C330S259000, C330S260000, C330S263000

Reexamination Certificate

active

07091789

ABSTRACT:
It is an object of the present invention to provide an output circuit capable of reducing a consumption current while an output current is suppressed in a case where limitation is placed on an output voltage so as not to fall to a predetermined voltage or less in an output circuit the emitter of which is grounded, the base of which serves as an input node for a control current and the collector of which serves as an output node. Provided are a base current supply section for supplying a base current to the output transistor according to an input signal from the outside, and a base current control section for detecting an inter-terminal voltage between the collector and emitter of the output transistor to control a base current supplied from the base current supply section so as not to cause the inter-terminal voltage to fall to a value lower than a predetermined voltage.

REFERENCES:
patent: 6175277 (2001-01-01), Mavencamp
patent: 9-51256 (1997-02-01), None

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