Level-shift and pulse shaping circuitry

Details Level-shift and pulse shaping circuitry Level-shift and pulse shaping circuitry

1979-02-01

1982-08-31

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250209, G01V 904

Patent

active

043474390

ABSTRACT:
A light detector with level shift and shaped pulse is obtained by circuitry hich provides both short turn off time and high sensitivity. The phototransistor does not provide the reference signal until nearly at maximum output.

REFERENCES:
patent: 3381219 (1968-04-01), Dumbeck
patent: 3675030 (1972-07-01), Tanenhaus
patent: 3727069 (1973-04-01), Crittenden
patent: 3792354 (1974-02-01), Slaught et al.

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