Sequential Flasher

  
Using a 555 timer to drive a CMOS counter, this device uses RCA CA3079 zero-voltage switch to control triacs TR1 through
Sequential Flasher - schematic

TR4. This circuit can be used to sequence lamp displays, etc. Caution: The CA3079s are connected to the 117-V line, as is the clock and counter circuit and their power supplies. Use caution, good insulation, and safe construction practices.




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