Operational circuit having protection circuit for detecting...

Details Operational circuit having protection circuit for detecting... Operational circuit having protection circuit for detecting...

2009-12-30

2011-11-08

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000, C330S265000

Reexamination Certificate

active

08054107

ABSTRACT:
An operational circuit includes: a first stage having a first input terminal for receiving an input signal and a second input terminal for receiving an output signal of the operational circuit, for outputting a first control signal at a first output terminal and a second control signal at a second output terminal according to the input signal and the output signal; a second stage coupled to the first stage, for generating the output signal according to a first driving current controlled by the first control signal and a second driving current controlled by the second control signal; and a protection circuit coupled between the first stage and the second stage, for detecting the first driving current to selectively adjust the first control signal.

REFERENCES:
patent: 4859870 (1989-08-01), Wong et al.
patent: 5049834 (1991-09-01), Kasai
patent: 5467058 (1995-11-01), Fujita
patent: 5585763 (1996-12-01), Navabi et al.
patent: 6768367 (2004-07-01), Meadows et al.
patent: 7242250 (2007-07-01), Tsurumi
patent: 7724089 (2010-05-01), Miyamoto et al.

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