I have a unit that is powered by a 12v battery, but I can also power it with a 12v mains unit. To switch between them I have to physically unplug one from the unit and plug in the other.
But I'm wondering about having both the battery and mains adaptor permanently connected and installing a switch in order to switch between them. Is it a SPDT switch I need? Only I can't find one suitable.
I'd have six cables: +/- of the battery and +/- of the adaptor being switched to feed the +/- of the unit.
But I'm wondering about having both the battery and mains adaptor permanently connected and installing a switch in order to switch between them. Is it a SPDT switch I need? Only I can't find one suitable.
I'd have six cables: +/- of the battery and +/- of the adaptor being switched to feed the +/- of the unit.