Apparatus and method for temperature-compensating Zener diodes h

Details Apparatus and method for temperature-compensating Zener diodes h Apparatus and method for temperature-compensating Zener diodes h

1992-12-09

1993-10-12

Stephan, Steven L.

Electricity: power supply or regulation systems

Self-regulating

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

323231, 323907, G05F 318, G05F 320

Patent

active

052529088

ABSTRACT:
An auto-TC voltage reference wherein an operational amplifier receives at one input the voltage of a Zener diode and at its other input receives a compensation signal from a feedback circuit comprising a transistor and resistor network. When one of the resistors of the network is trimmed to give a nominal output voltage for the reference, the TC of the reference voltage will have been reduced to zero, or nearly so. The circuitry is capable of compensating Zener diodes of either positive or negative TC.

REFERENCES:
patent: 4171492 (1979-10-01), Burth
patent: 4313083 (1982-01-01), Gilbert et al.
patent: 4622512 (1986-11-01), Brokaw
patent: 4668903 (1987-05-01), Elbert
patent: 4774452 (1988-09-01), Ahmed

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