Re: switching

<lilipot@[EMAIL PROTECTED]
> wrote in message 
news:6a84cf26-14a0-4155-af9a-15c5854eb8da@[EMAIL PROTECTED]
> Hello everybody,
>
> I have a set of battery, but I only one hooked up to the circuit, The
> other one act as a backup. I want to implement an electronic unit that
> will change (swap) the batteries.Therefore the wiring will need to be
> changed. The circuit need to sup****t 5amp of continuous current. Here
> is what I want to implement.
> from:
> A to C
> B to D
>
> to:
> A to D
> B to C
>
> Is it better to use a analogue or digital switching approach. I am
> just worried that digital might take too much energy by keeping those
> transistor or mosfet open and close.
>
> Li

A little more detail needed as to the actual application.

Tom