Police Lights Circuit using 555 Timer and 4017 Decade Counter
The circuit uses 555 timer and a decade counter IC CD4017. Here, the 555 timer runs in Astable mode. Decade counter 4017 counts the incoming pulses and activates its outputs i. e. for the first pulse Q0 becomes high and for second pulse Q1 becomes high and so on again for 10th pulse Q0 state becomes high. 555 Timer Based Police Lights Circuit . . .
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