U.V. detector

Details U.V. detector U.V. detector

1976-07-23

1977-09-06

Dixon, Harold A.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

250337, G01J 142

Patent

active

040470385

ABSTRACT:
The subject matter described is a U.V. detector of the ionization type for operation at high temperatures where it is necessary to cyclically reverse the potential applied to the sensor to prevent premature aging of the detector. In the present disclosure, the means for reversing the potential at a predetermined rate is shown as a free running oscillator multivibrator connected to switch the power supply. The novel aspect is in locking out the oscillator when U.V. is being sensed by the detector.

REFERENCES:
patent: 3047722 (1962-07-01), Pinckaers

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