AUTOMATIC_LIGHT_CONTROL

Published:2009/7/20 11:00:00 Author:Jessie | From:SeekIC

High-sensitivity vacuum phototube responds to illumination by changing mark-space periods of coldcathode mvbr so V2 is on most of the time when illumination is excessive. Thermal relay then gets heated sufficiently to switch off lights.-P. Bergweger, Photoelectric Control Using Cold Cathode Amplifiers, Electronics, 33:27, p 46-47.



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