Posted on Dec 23, 2012    9049

Capacitor Cl is connected continuously through the supply of 3 volts to 10 megohm resistor Rl. The capacitor is charged (relatively slowly) to 3 volts. The wink SWI is closed, it connects the charged capacitor (Cl) in series with C2 and R2. The capacitor C2 begins to charge, by placing a positive voltage during the gate of the SCR and turn it on. The two parallel `self-flashing` bulbs I1 and 12 on Tum.

CAR STOP LIGHT - image 1
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They flash on and off the SCR and the circuit is turned off until the vehicle is driven off the switch and C1 can recharge.

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