Delay off Circuit 12V - 3A? Mosfet or Relay? Answered
I want to make a delay off circuit 12V - 3A. When the switch is ON, the circuit will operate during 1 to 3 minutes, and when the switch is OFF, the circuit should work during 0.5 second before it turns off.
I made a delay off circuit using NE555 and a mechanical relay and it works. However, I need to make a smaller, cheaper and more efficient circuit.
I need your help and your advice to gain knowledge and improve my circuit. Thank you.