Hacker News new | ask | show | jobs
by funvill 2451 days ago
be careful POE can be anything up to 48 volts. Unless you control the input voltage. I suggest using a DC-DC converter with a larger input voltage.
2 comments
oakwhiz 2450 days ago
Regular PoE can in some cases get as high as 56 volts... Some PD equipment is overspec'd to deal with regulation issues on PSEs.
link
tjoff 2450 days ago
It is passive POE, you need to supply your own input as it won't work with a POE switch or anything like that.
link
aaronax 2450 days ago
There are some switches that supply passive PoE, such as many of Ubiquiti's products.
link
tjoff 2449 days ago
Sure, but you have to explicitly enable it. When would you not have control over the input?
link