Variable reference voltage generating circuit using...

Details Variable reference voltage generating circuit using... Variable reference voltage generating circuit using...

2011-08-23

2011-08-23

Vu, Bao Q (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

C323S314000, C307S125000

Reexamination Certificate

active

08004265

ABSTRACT:
A voltage generating circuit for generating a plurality of associated voltages includes a constant current source for generating a constant current; a plurality of resistors connected in series to the constant current source in series for generating a plurality of associated reference voltages; and a first controlled switch connected to a first resistor in parallel, wherein the plurality of associated reference voltages are changed by optionally conducting the first controlled switch to control the flow of the constant current through the first resistor.

REFERENCES:
patent: 4751497 (1988-06-01), Torii
patent: 5781141 (1998-07-01), Ikuta et al.
patent: 5838076 (1998-11-01), Zarrabian et al.
patent: 5969658 (1999-10-01), Naylor

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