D.C. Amplifier with improved characteristics with respect to tem

Details D.C. Amplifier with improved characteristics with respect to tem D.C. Amplifier with improved characteristics with respect to tem

1978-06-07

1980-06-10

Mullins, James B.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

330296, 330298, 330311, H01H 3732, H03F 304

Patent

active

042074800

ABSTRACT:
A D.C. amplifier for low-level currents includes an input stage having first and second cascode mounted transistors and a bis circuit adapted to maintain the base and collector potentials of the first transistor very close to each other over a predetermined temperature range. The amplifier is particularly suited for use in a flame detection device and, in addition, may include a protection circuit for the base-emitter junction of the first transistor.

REFERENCES:
patent: 3868581 (1975-02-01), Ahmed
Elektor, vol. 2, No. 7-8, p. 746, Jul.-Aug., 1976.

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