Scintillation Caution Light (5)

Published:2011/6/16 7:17:00 Author:Sue | Keyword: Scintillation, Caution, Light | From:SeekIC

In the daytime, RG has a low resistance value because of the light, and V is connected. IC's pin 4 has a low level. The multivibrator doesn't work. IC's pin 3 still has low level. VT is not connected and HL is not illuminated. At night, RG has a high resistance value because of lack of light, and V is disconnected. IC 'spin 4 has a high level. The multivibrator begins to work. IC's pin 3 outputs low pulse signals. VT is connected when the signal is positive and is disconnected when the signal is negative. Hl begins to twinkle.



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