Once upon a time, the need arose for an isolated power supply for the computer in the van that provides "TV"...
It worked. It's a forwarder topology, hacked and twisted out of an old 12V input cordless drill battery charger that was given to me. I wound my own toroid transformer, conjured up a crude regulation mechanism, and fought with all kinds of EMI emanating from it, all with it delicately perched atop the rest of the "rack" for several months on end... Emphasis on "delicately"...
This needed to be addressed for numerous reasons, but the most obvious was that it probably wouldn't survive the move into the nearly obtained truck where everything else is going to end up... so my answer was this:
The computer is in a case identical to this one, so they're primed for stacking. I cut out the section of the board from the charger that had the control chip in it, found a smaller common mode filter, added several caps, and put the monitor supply in there with it all.
This isn't *quite* it's final form, as I'm doing some final testing before I "bolt everything down", but is more or less representative. The major goal has been accomplished - it can be picked up and moved without wondering if it will crumble under it's own weight. I plan to clean up the back panel and make some plates to mount the plugs to, as well as wire up the old power/HDD LEDs to indicate the state of both supplies. The buttons won't do anything, the entire thing is externally controlled.
Till next time,
Steve
