Power source voltage monitoring circuit for self-monitoring...

Details Power source voltage monitoring circuit for self-monitoring... Power source voltage monitoring circuit for self-monitoring...

2007-09-25

2007-09-25

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S142000, C327S541000

Reexamination Certificate

active

11085132

ABSTRACT:
A power source voltage monitoring circuit for monitoring self power source voltage comprises a reference voltage circuit which is supplied with a power source voltage, and generates and outputs a reference voltage in accordance with the power source voltage, a comparator which is supplied with an output voltage output from the reference voltage circuit and a voltage varying with the power source voltage, compares the voltages, and outputs a result of the comparison, and a control circuit which prevents the voltage in accordance with the power source voltage from being input to the comparator before the voltage output from the reference voltage circuit reaches a predetermined reference voltage.

REFERENCES:
patent: 4712477 (1987-12-01), Aikou et al.
patent: 5455469 (1995-10-01), Ward
patent: 5920182 (1999-07-01), Migliavacca
patent: 359014383 (1984-01-01), None
patent: 9-135157 (1997-05-01), None

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