sandeepsamant
New Member
I need help about a simple circuit. I need to operate a relay(12v) with a 1.4v DC. So I am trying to use transistor as a switch, where 1.4v DC will be input. so that i can get 12 volt at output for relay.
I did this with, theoritical circuit but failed. after googling I found Darlington pair. I have Made circuit diagram. but during operation second transistor is heating very high. So please give me proper Idea of component rating so that it will work correct.
uploaded circuit **broken link removed**
I did this with, theoritical circuit but failed. after googling I found Darlington pair. I have Made circuit diagram. but during operation second transistor is heating very high. So please give me proper Idea of component rating so that it will work correct.
uploaded circuit **broken link removed**