Flash Signal Alarm Circuit

  
This circuit is useful if you need a low-energy flashing alarm. The 200 to 400-dc supply should have enough internal resistance to charge the 0.5 capacitor between flashes, about 2 or 3 time constants, which means about 500 kQ to 1 for a 1-s rate.
Flash Signal Alarm Circuit - schematic

Use lower values for higher rates.




Leave Comment

characters left:

New Circuits

.