Low voltage flasher

  
Applying voltage to the circuit triggers SCR1. With SCRl on, the voltage on the anode of SCR2 rises until SCR2 triggers to commu-tate SCRl. The voltage on the gate of SCRl will swing negative at this time, and only after a positive potential of 0 volt is once again attained, will SCRl retrigger
Low voltage flasher - schematic

The circuit could be used for higher voltage levels, but the peak negative voltage on the gate of SCRl must be limited to less than 6 volts.




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