Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1995-07-21
1997-04-15
Wong, Peter S.
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
323907, 327538, G05F 316
Patent
active
056213077
ABSTRACT:
A precision voltage reference temperature compensated circuit 10 uses forward biased Zener diodes D2, D4 to provide a negative temperature coefficient compensation circuit and reverse biased Zener diodes D5-D6 to provide a positive temperature coefficient compensation circuit. Use of only Zener diodes results in a circuit 10 with fast recovery to the expected output voltage from transient events such as power supply perturbations, output load switching and/or gamma radiation events. The reference output voltage V.sub.out temperature characteristic is finally established by trimming resistors R3, R4 that are coupled between the current source including transistor Q1 and a positive temperature coefficient compensation circuit of diodes D5-D7. The precision reference output voltage level is finally established by trimming the resistors R5 and R6 that are coupled between the output of the temperature coefficient trim network and ground.
REFERENCES:
patent: 4634959 (1987-01-01), Boeckmann
patent: 4792748 (1988-12-01), Thomas et al.
patent: 5029295 (1991-07-01), Bennett et al.
patent: 5300877 (1994-04-01), Tesch
Berhane Adolf
Harris Corporation
Wong Peter S.
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