Device for supplying temperature dependent negative voltage

Details Device for supplying temperature dependent negative voltage Device for supplying temperature dependent negative voltage

2011-08-02

2011-08-02

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S537000, C363S059000, C363S060000

Reexamination Certificate

active

07990206

ABSTRACT:
A negative voltage supply device includes a negative voltage detector and a negative voltage pumping unit. The negative voltage pumping unit pumps a negative voltage in response to a detection signal. The negative voltage detector detects a level of a negative voltage by using a first element and a second element, which are different in the degree of change in their respective resistance values depending on the temperature, and outputs the detection signal. The detection signal informs the negative voltage pumping unit that pumping of the negative voltage is no longer needed.

REFERENCES:
patent: 5629646 (1997-05-01), Menezes et al.
patent: 6194920 (2001-02-01), Oguri
patent: 6667662 (2003-12-01), Saito
patent: 2002/0017946 (2002-02-01), Fujii et al.
patent: 2002/0171470 (2002-11-01), Sim et al.
patent: 2005/0110560 (2005-05-01), Kim et al.
patent: 2008/0024198 (2008-01-01), Bitonti et al.

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