Re: 12vdc panel

["Jim" <alarminex@xxxxxxx>]

Rich wrote:
> What circuit would you use to get 12 VDC from 48 VDC?
> Can some one post one.
>
>
The basic circuit to reduce a DC voltage would be a simple voltage
divider. You'd have to know the current requirements so you could
determine the wattage of the resistors. If the current draw were
constant this would be pretty simple. The problem with doing what you
want to do with a "circuit" is that the current requirements for an
alarm panel duing an alarm condition are far greater than when it's not
in alarm conditon. So you'd need some kind of regulation circuitry too.
By the time you re-invented a voltage converter you could have bought 5
of them.