555 simple practical music light control circuit

Published:2011/5/21 7:07:00 Author:TaoXi | Keyword: simple, practical, music lights, control circuit | From:SeekIC

As the figure 17-53 shows, this circuit is composed of the sound control multivibrator, the timing pulse generator and the SCR trigger circuit.etc. The astable multivibrator is composed of the 555 and R2, RP1, R3, C3.etc. The music signal is detected by the coupling transformers T1 and D1, and it is amplified by VT1, then it adds to the 555's control port pin-5. Pin-5 connect with the standard partial pressure point (2/3VDD) of the integrated chip's internal comparator. This circuit can produces five kinds of cycle way to make the flash to change with the music, so it can be used in the dance floors or the celebration occasions.



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