Hi guys,,
can some one help me to design a circuit of a off timer circuit, the application im going to use is for the AUX fan. I need the aux fan to be running when the supply is cut off for a minutes like 10-15 before totaly off, then when the supply comes back, the timer will reset and it will remain standby and the aux fan will run again, as long as the supply is live the timer will ramain standby until the supply is cut off then the timer start to delay the aux fan to be off.