Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-01-05
2010-12-28
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S536000, C327S537000, C363S060000
Reexamination Certificate
active
07859323
ABSTRACT:
A negative output regulator circuit (24) is provided with clamp circuits CLP (X1, X2, Q1, Q2), which detect a current generated when the output of a negative voltage (VM) is stopped and fixing the voltage of an output end (T2) at a prescribed value. Generation of a positive voltage at an output terminal is suppressed without increasing chip size nor making the sequence complicated.
REFERENCES:
patent: 6545917 (2003-04-01), Kim
patent: 7649402 (2010-01-01), Chen
patent: 2005/0231265 (2005-10-01), Yamahira
patent: 58-2018 (1983-01-01), None
patent: 2-149412 (1990-12-01), None
patent: 07-028536 (1995-01-01), None
patent: 11-327669 (1999-11-01), None
Cole Brandon S
Donovan Lincoln
Fish & Richardson P.C.
Rohm & Co., Ltd.
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