4 ms·
> [PoE] uses AC to transmit and avoid resistive losses What? PoE (802.3af/at) operates at 48V DC. [0] There is no AC being transmitted in PoE. 48V DC is used
by kogepathic 10y ago
> [PoE] uses AC to transmit and avoid resistive losses
What? PoE (802.3af/at) operates at 48V DC. [0]
There is no AC being transmitted in PoE. 48V DC is used to avoid power loss due to small gauge wires in CAT5/6 cables, so they can provide power to devices up 100m as per the Ethernet specification.
[0] https://en.m.wikipedia.org/wiki/Power_over_Ethernet https://en.m.wikipedia.org/wiki/Power_over_Ethernet