Automatic biasing control circuit for emissions detector

Details Automatic biasing control circuit for emissions detector Automatic biasing control circuit for emissions detector

1982-09-27

1984-10-23

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

G01N 2135

Patent

active

044790570

ABSTRACT:
A pair of operational amplifiers, one of which having a photoresistor feedback connecting the output of the amplifier to its inverting input. The non-inverting input of the last named amplifier being provided with a voltage developed by the second operational amplifier. The second amplifier serves to control the output of the first amplifier in accordance with changes in the output.

REFERENCES:
patent: 3678269 (1972-07-01), Malek
patent: 4394575 (1983-07-01), Nelson

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