Voltage regulator

Details Voltage regulator Voltage regulator

1990-04-24

1992-06-23

Stephan, Steven L.

Electricity: power supply or regulation systems

Self-regulating

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

323317, 323280, 3072968, 36518909, G05F 324

Patent

active

051246317

ABSTRACT:
A voltage regulator forms a constant voltage based on the sum voltage of the threshold voltages of multiple transistors comprising multiple first transistors with mutually different threshold voltages, a first switch to select a first transistor output from the multiple first transistors, multiple second transistors with mutually different threshold voltages and a second switch to select a second transistor from the multiple second transistors, and a summing circuit connected to the multiple first and second transistors for providing a sum voltage from the threshold voltages of the selected first and second transistors. Alternatively, the voltage output of a single transistor in lieu of one of said multiple transistor groups and may be combined with the output voltage of a selected transistor from the other multiple transistor group for input to the summing circuit.

REFERENCES:
patent: 4163161 (1979-07-01), Walker
patent: 4186436 (1980-01-01), Ishiwatari
patent: 4377781 (1983-03-01), Tatsushi et al.
patent: 4506350 (1985-03-01), Asano et al.
patent: 4587477 (1986-05-01), Hornak et al.
patent: 4752699 (1988-06-01), Cranford, Jr. et al.
patent: 4853610 (1989-08-01), Schode, Jr.
patent: 4893275 (1990-01-01), Tanaka et al.
patent: 4939633 (1990-07-01), Rhodes et al.
patent: 4954769 (1990-09-01), Kalthoff

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