Solid-state voltage reference providing a regulated voltage havi

Details Solid-state voltage reference providing a regulated voltage havi Solid-state voltage reference providing a regulated voltage havi

1980-12-24

1982-09-28

Beha, Jr., William H.

Electricity: power supply or regulation systems

Self-regulating

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

323231, 323907, G05F 318

Patent

active

043520561

ABSTRACT:
A two transistor voltage reference circuit controls the ratio of the current densities of two transistors by a negative feedback loop. A voltage corresponding to the difference in the base-to-emitter voltages of the two transistors is developed which has a positive temperature coefficient (TC) and which is connected in series with the base-to-emitter voltage of one of the two transistors having a negative TC. The circuit parameters are selected so that the resultant combined voltage has a predetermined, composite TC. A zener diode is included in the negative feedback loop and arranged to have a TC which cancels the predetermined composite TC to develop a reference voltage having a high magnitude that has minimal variation with temperature change.

REFERENCES:
patent: 3887863 (1975-06-01), Brokaw
patent: 3997802 (1976-12-01), Hoehn
patent: 4249123 (1981-02-01), Kwan
patent: 4313083 (1982-01-01), Gilbert et al.
patent: 4315209 (1982-02-01), Schmoock
Analog Dialogue 9-1, pp. 6-8, 1975.
IBM Technical Disclosure Bulletin, vol. 19, No. 10, pp. 3782-3783, Mar. 1977.

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