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Car Third Brake Lights

2014-12-10 22:56  
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The third brake light circuit using 12-V negative ground systems. The circuit is designed light (through SCR1 and SCR2) is activated when both the left and right brake lights are controlled. When the brake pedal is depressed, 12 V is applied to the left and right brake lights.

Third Brake Light 


Two thyristor triac gate trigger current flowing, open the third brake light.

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