Loop lighting control circuit

Posted on Mar 28, 2007

It shows a circular lighting control circuit. Circuit, rCl of four two-input NAND gate CD4011, which made of a non- door l, 2 multivibrator composed by the NAND gate 3,4 RS flip-flop circuit consisting of a pulse generated by the multivibrator shaping,

Loop lighting control circuit
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then the output of NAND gate 4 output from the clock pulse to the end of IC2 Cp. IC2 is a decimal counter / divider CD4017, when it Cp-ended input clock pulse, the output terminal Qo-Q3 will appear sequentially high -level pulse signal. When Qo-Q3 sequentially appear high, solid state relays Kl ~ K4 are sequentially turned on by the trigger, so that the corresponding lamp H1 ~ H4 is lit one by one. The IC2 cleared again began this process in order to achieve the control function of the lamp light cycle. Circuit. Each sequence street lighting off time and full-time to stay the same, RP1 can adjust the time 0.1-10 s in the room changed.

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