Night circuit diagram showing target

Posted on Mar 28, 2007

As shown, this circuit is suitable for shooting at night and turned on the lights corridor. During the day due to sufficient light, BG3 conduction, SCR blocking oscillation cir

Night circuit diagram showing target
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cuit by an IC or the like can not work without voltage, so light is not on. Night, since BG3 off, SCR triggered by conduction, so by the oscillation start oscillation circuit composed of IC, etc., IC 3 ultra-low frequency square wave output continuously, the frequency f 1/T 1.44/(W + Ra + 2Rb ) C, the IC can be seen between 3 and connected to the LED twinkling light, very eye-catching. Ra Rb as C1 adjust the size of flash frequency can be changed.

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