Circuits and methods for voltage detection

Details Circuits and methods for voltage detection Circuits and methods for voltage detection

2009-10-28

2011-12-13

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

Reexamination Certificate

active

08076959

ABSTRACT:
A circuit for detecting an input voltage includes a voltage-to-current converter and a current comparator. The voltage-to-current converter is operable for generating a monitoring current that varies in accordance with the input voltage. The current comparator coupled to the voltage-to-current converter is operable for comparing the monitoring current to a threshold current proportional to the temperature of the circuit, and for generating a detection signal indicating a condition of the input voltage based on a result of the comparison.

REFERENCES:
patent: 5528182 (1996-06-01), Yokosawa
patent: 6020768 (2000-02-01), Lim
patent: 6137324 (2000-10-01), Chung
patent: 6842321 (2005-01-01), Brohlin
patent: 6867624 (2005-03-01), Wang

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