Read-out amplifier for photovoltaic detector

Details Read-out amplifier for photovoltaic detector Read-out amplifier for photovoltaic detector

1987-09-18

1988-12-27

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

307490, H01J 4014

Patent

active

047942479

ABSTRACT:
A read-out amplifier (200) for a photovoltaic detector (201) employs an integrating amplifier (203) with capacitor feedback (230 ) during a self-calibrating active load (205, 240) to minimize debiasing of the photovoltaic detector during its operation. The self-calibrating active load reduces the effect of noise and threshold nonuniformities of the semiconductor devices (202, 203, 204, 205) used in the read-out amplifier circuitry.

REFERENCES:
patent: 3636458 (1972-01-01), Sugiyama et al.
patent: 4313067 (1982-01-01), White
patent: 4439693 (1984-03-01), Lucas et al.
patent: 4578646 (1986-03-01), Maio et al.

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