Low power optoelectronic device and method

Details Low power optoelectronic device and method Low power optoelectronic device and method

1992-08-10

1995-01-24

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

25023113, 250214LS, 327514, H01J 4014

Patent

active

053844572

ABSTRACT:
Methods and devices are disclosed for selectively varying the load to a photodetector such as a phototransistor which forms part of a photosource/photodetector pair and for selectively using to advantage or compensating for the parasitic capacitance of the photodetector to permit reductions in power, conversion of fixed signal thresholds to software controlled digital hysteresis, automatic adjustment and compensation for unmatched photosources and associated photodetectors, and adjustment of fixed voltage thresholds.

REFERENCES:
patent: 3104323 (1963-09-01), Over, Jr. et al.
patent: 4277727 (1981-07-01), LeVert

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