Hey, for a project I am creating an auto starting fire pump. Since its been a while since i've done much electronics work i'm stumbling a bit on the design of a switching circuit to replace the key switch on the pump..
The control signal will be 5V from the microcontroller..
There are 4 contacts: Battery, Starter, Ignition, Ground..
To start the motor, Battery and Starter have to be linked.
once the motor is running none of the contacts are linked.
To stop the motor, Ignition and Ground have to be linked.
I'd be grateful if someone could suggest a circuit that would do this please.
Thanks
The control signal will be 5V from the microcontroller..
There are 4 contacts: Battery, Starter, Ignition, Ground..
To start the motor, Battery and Starter have to be linked.
once the motor is running none of the contacts are linked.
To stop the motor, Ignition and Ground have to be linked.
I'd be grateful if someone could suggest a circuit that would do this please.
Thanks