I have built a 555 timer that uses 2 9v batteries and i need it to power a relay... so i need to know where i can get a relay that will close when 2 9v batteries hit it, but i also need it to allow the current from a car bettery to go through it without messing it up.. if any onw can help me out with a radio shack part number or somewhere else i can get it or how to build it please let me know...
Thanx,
Nick
Thanx,
Nick