aasimzee
Junior Member level 1
I am using relay with flyback diode across the coil to control spikes when relay turns off, relay is controlled by microcontroller depending upon the temperature limit i set and i am using bjt for switching.
Lets come to the problem I am using DC battery to power microcontroller too by decreasing the voltag to 5v using 7805 and same battery is running FAN. question is do i need anything else or this circuit will work fine bcoz i have read fan acts like relay with turned off as its is inductive load. will the fan affects battery. Circuit is in pic.
Lets come to the problem I am using DC battery to power microcontroller too by decreasing the voltag to 5v using 7805 and same battery is running FAN. question is do i need anything else or this circuit will work fine bcoz i have read fan acts like relay with turned off as its is inductive load. will the fan affects battery. Circuit is in pic.