Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2011-01-04
2011-01-04
Nguyen, Matthew V (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S282000
Reexamination Certificate
active
07863881
ABSTRACT:
An output transistor is provided between an input terminal and an output terminal. An error amplifier adjusts the gate voltage of the output transistor such that the voltage that corresponds to the output voltage approaches a predetermined reference voltage. A fluctuation detection capacitor is provided on a path from the input terminal to a grounded terminal, which sets one terminal thereof to a fixed voltage. A current feedback circuit supplies, to the gate of the output transistor, the current that corresponds to the current that flows through the fluctuation detection capacitor. A clamp circuit clamps the gate voltage of the output transistor. The clamp circuit30clamps the gate voltage of the output transistor such that the voltage difference between the gate of the output transistor and the input terminal exhibits a predetermined clamp voltage or more.
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Cantor & Colburn LLP
Nguyen Matthew V
Rohm & Co., Ltd.
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