Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent
1985-04-22
1986-10-07
Dixon, Harold
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
315194, 315287, H05B 3702, G05F 100
Patent
active
046161597
ABSTRACT:
There is provided an improvement in a pulsating radiation detector system comprising means in a series circuit for emitting radiation in pulses of a selected, adjusted frequency, means responsive to pulses of radiation at the frequency for creating a control signal related to the received radiation and a driving circuit for pulsating the radiation emitting means in the series circuit. The improvement comprises a modification of the driving circuit to produce voltage pulses in the series circuit at a time base width less than the reciprocal of the frequency (in seconds), with means for sensing current flow in the series circuit, means for limiting current flow in the series circuit and means for adjusting the pulse width continuously as an inverse function of the sensed circuit whereby short distinct pulses can be created for better discrimination and accuracy in the detector system.
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"H 3109 Discriminating Detector", North American Mfg. Co., Cleve. Ohio, Bulletin 101.03, Jul. 81 (4 pages).
Ko Wen H.
Yeh Gong-Jong
Dixon Harold
The North American Manufacturing Company
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