Bias circuit for a photo-avalanche diode

Details Bias circuit for a photo-avalanche diode Bias circuit for a photo-avalanche diode

1975-08-27

1977-01-04

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307297, 307254, H03K 112

Patent

active

040016145

ABSTRACT:
There is disclosed a bias circuit for a photo-avalanche diode in equipment such as a laser receiver which circuit utilizes the breakdown characteristics of the actual detector diode itself to regulate the applied detector diode bias voltage. This is achieved by providing means to charge a capacitor up to the breakdown voltage in response to a first timing pulse, and second means to offset the capacitor voltage to a lower level by the fixed amount of a positive reference voltage, responsively to a second timing pulse which renders a transistor conductive.

REFERENCES:
patent: 3376423 (1968-04-01), James
patent: 3648073 (1972-03-01), Sams et al.
patent: 3896398 (1975-07-01), Ueki
patent: 3898588 (1975-08-01), Skagerlund
patent: 3925735 (1975-12-01), Ozeki et al.
I.B.M. Tech. Disc. Bull. Optical Reader by L. S. Rogers et al. vol. 8, No. 10, Mar. 1966, p. 1445.

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