I want to operate a Powered Device working on 15 volts POE. Is there any PSE IC that can give that much of voltage? Please help me.

I need to know what is the required POE Voltage out to the Powered Device. Most of the places I have seen it need 37V to 48V. Can you tell me if I give 24V instead of 48V, my PD will work or not.

Then [Alan] dives into the way a PoE port polls for a PoE device to be connected, identifies it, and ramps up the voltage. Explaining the various different circuits is particularly valuable.

His solution makes it extra cheap by using so-called passive PoE, which injects a voltage onto the conductors of the network cable being used for PoE, without bothering with any kind of handshake.

PoE switches have revolutionized network power distribution by combining data transmission and electrical power into a single ...

Input voltage range 36-57Vdc (nominal 48Vdc for 802.3af PoE) Output voltage regulated to 10V and fed to Arduino on-board voltage regulator via Ethernet shield for further regulation down to 5V. Plugs ...

The DC/DC converter supplies 9 Watts @5V to connected devices. This Function Board configures the PoE supply voltage to the IEEE802.3af Alternate B power scheme. This power scheme uses the spare pairs ...