Preamplifier for an optical receiver

Details Preamplifier for an optical receiver Preamplifier for an optical receiver

1987-09-23

1989-02-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250214AG, H01J 4014

Patent

active

048088102

ABSTRACT:
An optical high-impedance preamplifier for processing signals over a large dynamic and automatically operating control range. The automatic control is provided by a variable impedance which is arranged in series with the source circuit of a current-stabilized input MOSFET of the optical preamplifier. As a result thereof, no overloading or loss of sensitivity occurs at a high or low input level.

REFERENCES:
patent: 3911268 (1975-10-01), Mori et al.
patent: 4415803 (1983-11-01), Muoi
patent: 4498001 (1985-02-01), Smoot
patent: 4647762 (1987-03-01), Chown
patent: 4723313 (1988-02-01), Folcke et al.

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