FLASHING_BRAKE_LIGHT_FOR_MOTORCYCLES

Published:2009/6/17 23:31:00 Author:May | From:SeekIC

When brake-light switch 51 is closed, power is applied to UI and U2. Two inverters of U2, a 4049 hex inverting buffer, are connected in a low-frequency oscillator circuit that feeds clock pulses into UI, a 4017 decade counter/divider. Outputs 0, 2, 4, 6, and 8 of U1 are coupled to the gate of Ql through a 1N914 diode. As the 4017 counts down, it turns the brake light on and offfour times and then leaves it on until the brake switch is released. The on/off rate can be set by potentiometer R2; for best results, the on/off rate should be set so that it is rapid.



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