Looks like a lot of people make a SIP-packaged PoE power module.
So it could be a plug-in option for a little box that otherwise runs from a 24 volt wart.
Price is roughly $10. The cheapest Alibaba unit is around $3!
It's a fairly wide-range DC/DC converter, but at least one (Ubiquiti) PoE injector in my junk box sources 24VDC, and that's out of its (36V-57V) range. These specs are reminiscent of the telecom style converters used with
48V systems.
DIY output filtering, and no RF noise or EMI specifications. No shielding is apparent either.
Adding some beads and caps would be no big deal. If I allow optional wart DC power, they'd be there anyhow.
Well, it is a bare PCB. I'll put it on a board in an aluminum box.
fredag den 10. februar 2023 kl. 22.16.38 UTC+1 skrev John Larkin:
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