Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2005-05-17
2005-05-17
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C323S276000
Reexamination Certificate
active
06894553
ABSTRACT:
A current boost circuit that supplies additional current to a voltage reference power rail. When the voltage reference power rail drops due to an excessive current demand from the load, the drop is sensed and a switch is activated supplying additional current to the voltage reference rail. A gain stage is capacitively coupled to the reference voltage and any drop is transferred through this capacitor to a gain stage that amplifies the drop. The amplified drop is capacitively coupled to a solid state switch that turns on connecting an additional current source to the reference voltage rail. The solid state switch is biased just below its turn on threshold.
REFERENCES:
patent: 5850139 (1998-12-01), Edwards
patent: 6188211 (2001-02-01), Rincon-Mora et al.
patent: 6388506 (2002-05-01), Voo
patent: 6661212 (2003-12-01), Ostrom
Hulfachor Ronald B.
McDonald, II. James J.
Cesari and McKenna LLP
Fairchild Semiconductor Corporation
Paul, Esq. Edwin H.
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