The circuit uses two NAND GATES as an oscillator,feeding a clock pulse to the 4017 Johnson Ic. The diodes assist in a forward and backward flashing pattern just like the 1980 hit Tv series Knight Rider.
EFK 8000 NPN Astable Multiviabrator
EFK 8001 555 Flip-Flop
EFK 8001V 555 Flip-Flop Vero Board Version
EFK 8002 PNP Transistor Flip-Flop
EFK 8003 NPN Transistor Flip-Flop
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