Help,i have a solenoid valve which was powered via a 9v dc square battery [smoke alarm type] via some electronics to provide a pulsed open and close of the valve the electronics enclosure was not made good by the irrigation system installers and now the electronics are cooked by the ingress of water,the coil of the valve is rated 9vdc to 40vdc but when i try and energise the coil via a standard 12vdc car battery i blow a 2amp inline fuse i installed in the positive side of the battery like a dead short,
what am i doing wrong?
what am i doing wrong?