Device and method for detecting a low voltage in a system

Details Device and method for detecting a low voltage in a system Device and method for detecting a low voltage in a system

1997-05-30

1998-11-17

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 88, H03K 522

Patent

active

058381732

ABSTRACT:
In a system, a low-voltage detecting circuit includes an oscillating section for outputting a rectangular wave proportional to a supply voltage according to a control signal selected by the user and produced by a micro-controller unit, and a low-voltage detecting signal generator for counting the number of waves present in the rectangular waveform and comparing the count value with a reference value preset by the user to produce a detection signal for detecting a voltage drop in the system.

REFERENCES:
patent: 3946302 (1976-03-01), Kovalick et al.
patent: 4301380 (1981-11-01), Thomas
patent: 5196833 (1993-03-01), Kemp
patent: 5274337 (1993-12-01), Young et al.
patent: 5386152 (1995-01-01), Naraki
patent: 5387882 (1995-02-01), Schoofs

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