Electricity: power supply or regulation systems – In shunt with source or load – Using diode
Reexamination Certificate
2005-03-21
2009-10-13
Berhane, Adolf (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using diode
C363S126000, C307S017000
Reexamination Certificate
active
07602158
ABSTRACT:
A power circuit generating a non-isolating low voltage power supply using a capacitive AC voltage drop in standby. Specifically, the power circuit includes an AC connector that generates a first AC input and a second AC input that are opposite in phase. The power circuit also includes first and second diode bridge rectifier circuits that are coupled to the first AC input, the second AC input, and a ground. A first capacitor drops a voltage of the first AC input, and a second capacitor drops a voltage of the second AC input. The first diode bridge rectifier circuit provides a high voltage power signal to a load. The second diode bridge rectifier circuit provides a low voltage power signal to a microcontroller.
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LT1009 Datasheet, Texas Instruments, Mar. 2002, SLVS013H, pp. 1 and 6.
Behm Harry
Berhane Adolf
National Semiconductor Corporation
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