Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Reexamination Certificate
2008-01-29
2008-01-29
Easthom, Karl (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
C323S223000, C323S282000, C323S284000, C323S286000, C323S259000
Reexamination Certificate
active
07323850
ABSTRACT:
A current detection circuit of the present invention has a switching device1; an auxiliary switching device2; an offset voltage source comprising an offset resistor device7and a current source circuit8; a compensation circuit, comprising a differential amplifier4and a compensation transistor5, for adjusting the output current of the auxiliary switching device2so that the potential obtained by subtracting the voltage drop across the offset resistor device7from the output potential of the switching device1is equal to the output potential of the auxiliary switching device2, being configured that the detection level of the current flowing in the switching device1is shifted by an offset amount.
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Ishii Takuya
Motomori Mikio
Ryu Takashi
Shigemi Tomoya
Tanabe Hirohisa
Easthom Karl
Hansen Stuart
Harness Dickey & Pierce PLC
Matsushita Electric - Industrial Co., Ltd.
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