Hello everybody,hope everyones summer is going great!! I want to build a simple switch for my trucks alarm system so when the battery cable is disconnected,a seperate siren from the main siren is turned on and powered by a seperate 12v house alarm sealed type of battery.Now I figured out how to do it with a spdt relay,but having a relay latched all the time would not be practical.I was figuring something with a Transistor and a pull down resistor on the base,but I figured I would ask first.Also,it would be nice if the seperate batterys voltage would be maintained by the trucks electrical system.Thanks for the help....
P.S.-These kits can be purchased,but I already have the battery,and the circuit looks simple. Plus building stuff is way more fun... :wink:
P.S.-These kits can be purchased,but I already have the battery,and the circuit looks simple. Plus building stuff is way more fun... :wink: