Voltage detection circuit

Details Voltage detection circuit Voltage detection circuit

2006-04-04

2006-04-04

Cunningham, Terry D. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S074000, C327S143000, C327S513000

Reexamination Certificate

active

07023244

ABSTRACT:
A voltage detection circuit for detecting the voltage level of a first power source. A first transistor includes a first gate, a first source, and a first drain coupled to the first gate. A second transistor includes a second gate, a second source, and a second drain coupled to the second gate. A comparator includes a first input terminal, a second input terminal coupled to the second drain, and an output terminal. A first resistor is coupled between the first input terminal and the first drain. A second resistor is coupled to the first power source. A third resistor is coupled between the second resistor and the first input terminal. A fourth resistor is coupled between the second resistor and input terminal. A fifth resistor is coupled between the first source, and a second power source. A resistive device is coupled between the first source, and the first power source.

REFERENCES:
patent: 5017858 (1991-05-01), Hayashi
patent: 6462526 (2002-10-01), Tanase
patent: 6559629 (2003-05-01), Fernald
patent: 6937001 (2005-08-01), Ueda
patent: 2002/0070767 (2002-06-01), Therisod
patent: 2004/0080305 (2004-04-01), Lin et al.

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