Photoelectric conversion circuit

Details Photoelectric conversion circuit Photoelectric conversion circuit

1980-12-05

1983-07-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250214P, 356222, H01J 4014

Patent

active

043945708

ABSTRACT:
A photoelectric conversion circuit comprises a pair of cascade connected semiconductor switching circuits, each of which is formed by a CMOS inverter. A pair of oppositely poled, series connected photodiodes define a photometric, photoelectric transducer element. A capacitor is arranged to be charged and discharged in response to a photocurrent from the transducer element. The combination of the transducer element and the capacitor form a feedback circuit which is connected across the switching circuits to cause the latter to oscillate.

REFERENCES:
patent: 3781119 (1973-12-01), Mori
patent: 3992714 (1976-11-01), Miyakawa
patent: 4309604 (1982-01-01), Yoshikawa et al.
Japanese Published Unexamined Patent Appln. No. Sho/52-92516, Laid-open: Aug. 4, 1977.

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