A leak current suppressing printed circuit board

Details A leak current suppressing printed circuit board A leak current suppressing printed circuit board

1976-07-09

1978-09-12

Smith, Alfred E.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

361424, 354 60R, H01J 3912

Patent

active

041140362

ABSTRACT:
A leak current suppressing printed circuit board in which the input circuit is so designed that between the input terminals a light sensing photoelectric converting element operating in the current mode is connected. The input is guarded by means of the circuit net, whose potential is same as that at the input terminal of the inverting input circuit or the non-inverting input circuit of the high input impedance operation amplifier.

REFERENCES:
patent: 3770968 (1973-11-01), Hession et al.
patent: 3786264 (1974-01-01), Ferro et al.
patent: 3852644 (1974-12-01), Seidler et al.
patent: 3983023 (1976-09-01), Baker et al.

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