Light-receipt system with current bias circuit and pre-amplifier

Details Light-receipt system with current bias circuit and pre-amplifier Light-receipt system with current bias circuit and pre-amplifier

1994-08-10

1997-04-29

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250214AG, 250214C, 359174, 359189, H04B 1006, H03G 320

Patent

active

056251815

ABSTRACT:
A light receipt system has a bias circuit and a light-receipt element. The bias circuit controls light input power to the light-receipt element to the optimum multiplication factor. The bias circuit of the light-receipt element has a first resistor, a second resistor, and a third resistor. The first resistor and the second resistor are connected in parallel, and the light-receipt element is connected between a connection of the first resistor and the second resistor, and the third resistor. A bypass current path is provided, connected to a junction point between the first resistor and the second resistor.

REFERENCES:
patent: 4750217 (1988-06-01), Smith et al.
patent: 4764732 (1988-08-01), Dion
patent: 5293260 (1994-03-01), Kikawa et al.
patent: 5311353 (1994-05-01), Crawford
patent: 5363064 (1994-11-01), Mikamura

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