As a bonus they like to fail when they think the time is right. SMPS are cheap, light and high efficiency but they radiate, pollute mains voltage and what not. When fed with batteries or power packs it is different but using those is for the true electro-sadomasochists that wants to charge as many batteries in life as possible. ![]() ![]() But when I save it from sheet to my user database I get a message telling thats correctly saved. I get it from a friend that own a Professional version, I use it in a schematic and simulation works. Besides that it is a hell of a job to get other parameters under control that come with SMPS (if you use mains voltage). Im using educational version and the popular voltage regulator LM317 isnt available. Switchers/SMSP are given as advice but remember that no silent switcher exists without an ultra low linear LDO behind it. This is not textbook practice though and only possible in specific cases. When overdimensioning transformers I manage to have a stable 15V output with certain transformers, a not too high load and still enough headroom. It is of no concern till about +/-12V output voltage and a 2 x 12V AC transformer which works OK with LDO regs. ![]() Input voltage is a concern but a little calculation and you are there. The even better LT3045/LT3094 can deliver 500 mA. Current is limited so one must divide the circuits over more than 1 regulator per channel/rail which does not hurt.
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June 2023
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