Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Particular stable state circuit
Reexamination Certificate
2007-04-17
2007-04-17
Ton, My-Trang Nu (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Particular stable state circuit
C327S078000, C327S482000
Reexamination Certificate
active
11143852
ABSTRACT:
A power supply switching circuit includes an input terminal (2) for receiving a signal from a motherboard, an output terminal (4) to output a control signal, a first Bipolar Junction Transistor (BJT) (5), and a second BJT (7). A base of the first BJT is connected to the input terminal via a base bleeder circuit. A collector of the first BJT is connected to a stand-by power supply terminal (10) via a collector resistor. A base of the second BJT is connected to the collector of the first BJT. A collector of the second BJT is connected to a system power supply terminal (12) via a collector resistor. The collector of the second BJT is connected to the output terminal. Emitters of the first and second BJTs are grounded.
REFERENCES:
patent: 4254347 (1981-03-01), Ray
patent: 4754166 (1988-06-01), Nagano
patent: 5517153 (1996-05-01), Yin et al.
patent: 2006/0145731 (2006-07-01), Jiang et al.
Xiong Jin-Liang
Yang Xing-Jun
You Yong-Xing
Englund Terry L.
Hon Hai Precision Industry Co. Ltd.
Hong Fu Jin Precision Industry ( Shenzhen) Co., Ltd.
Morris Manning & Martin LLP
Nu Ton My-Trang
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