In message <64D32EE8B9CBDD44963ACB076A5F6ABB02717001@Mailbox-Tech.lecotech.local>, dated Thu, 17 Sep 2015, "Kunde, Brian" <[email protected]> writes:

hey would power our instrument with an AC Power Line Conditioner that turned out was Under-rated for the current our instrument needed. Under full load, this line condition would do something strange which blew up the power supply.

That has some similarities with my conjecture. Do you really need active PFC in your small DC power supply? If not, you might consider using a product that doesn't have it.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
When I turn my back on the sun, it's to look for a rainbow
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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