Well, a while back i built a laptop cooler with a simple switch to turn it on, but i wanted to be able to connect it to the serial port to turn it on. So i went to radioshack and bought a 12v relay to be triggered by the serial port
but the serial port does not have enough current to drive the relay. so i need a way to drive the relay without directly hooking it up to the serial port.
thanks,
electronics wiz
but the serial port does not have enough current to drive the relay. so i need a way to drive the relay without directly hooking it up to the serial port.
thanks,
electronics wiz