/diy/ - Do It Yourself

>>1558224
>33w + 50w + 480w + 960w
>90% efficient
the most efficient power converter is the one that's not there. why are your heating elements and mechanicals not running at mains voltage wherever practical?
90% is a very tall order. a single switcher to handle all of that seems like a really bad idea, with detrimental effects on the quality and accuracy of your output voltages. if I were putting together a system like this, I'd put the lights on their own off-line CC supply with a current/brightness input, add a 12V@50A switcher (off-the-shelf, probably) for what pumps etc. I couldn't run from the mains, hook that bitch up to some copper bus bar, and use smaller buck converters from the 12V bus to run controllers and sensors as required, an amp or four at a time. it's a step up from two dozen wall warts polluting the space, to be sure
if you still go to roll your own, you might want to have a look at some of TI's switching power supply controllers and their app notes to see if they have something to make life any easier for you, and also think about Pic related

>>1558244
any chance of using your primary as the core, encapsulated inside however much paraffin you like?

>>1558228
>I have junk, what do?
Take it to the recycler.