Photoelectric cell with stabilised amplification

Details Photoelectric cell with stabilised amplification Photoelectric cell with stabilised amplification

1997-12-03

1999-11-30

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

330308, H01J 4014

Patent

active

059946890

ABSTRACT:
A photoelectric cell having a receiving section fitted with an amplifier processing circuit for making the cell immune to electrical disturbances. The processing circuit uses a transfer impedance amplifier A having a gain loop 24 which is shunted by a short-circuit path 24A including a switch T1 controlled by the transmission signal E1. The switch T1 conducts when no pulses are delivered from the transmission signal E1 and does not conduct when pulses are received from the transmission signal E1.

REFERENCES:
patent: 3739177 (1973-06-01), Ko
patent: 4851689 (1989-07-01), Hasegawa
patent: 4861978 (1989-08-01), Anderson
Patent Abstracts of Japan, vol. 17, No. 518 (E-1434), Sep. 17, 1993 and JP 05 136678 A, Jun. 1, 1993.
Toshifumi Fukuyama, "Ways to Prevent Malfunction in Photoelectric Switches", J.E.E. Journal of Electronic Engineering, vol. 21, No. 205, Jan. 1984, pp. 59-63.

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