Voltage drop detecting circuit

Details Voltage drop detecting circuit Voltage drop detecting circuit

1993-01-28

1996-04-30

Regan, Maura K.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

340661, 324705, G01R 2726

Patent

active

055128378

ABSTRACT:
In a voltage drop detecting circuit, when voltage Vcc being monitored is at a steady-state value, reference voltage B is classified by divided voltages Va to Vc from detection voltage generation circuit group for classification of reference voltage. In accordance with the result of that classification, one of the divided voltages Va to Vc from detection voltage generation circuit group for detection of a drop in the voltage being monitored is selected as detection voltage A. Since the resistance ratio can be expressed fairly correctly in ICs, the circuit structure of the voltage drop detecting circuit is capable of reducing the apparent range of variation of reference voltage B, whereby the precision of detection is improved.

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patent: 5172018 (1992-12-01), Colandrea et al.
patent: 5233329 (1993-08-01), Lippmann et al.

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