maxmanclive
New Member
Hi
I need some help! With my project
I have a 12 volt feed from a Vehicle battery that I have fitted with a Regulator Adapter, Step-Down to 4.5 volts, what I need is to run a battery pack of 3 AA batteries that are only used if the main supply is disconnected.im not sure weather to use a relay,
Any help will be appreciated.
Cheers
Clive
I need some help! With my project
I have a 12 volt feed from a Vehicle battery that I have fitted with a Regulator Adapter, Step-Down to 4.5 volts, what I need is to run a battery pack of 3 AA batteries that are only used if the main supply is disconnected.im not sure weather to use a relay,
Any help will be appreciated.
Cheers
Clive