How does the PoE switch supply power to the device?

How does the PoE switch supply power to the device?

There are only three kinds of power supply voltage in the PoE power supply, when the supply voltage is 2.5V-10V at the detection stage, the power supply voltage is 15-20V in the stage of classification, and finally stabilized at 48V. Please see the following PoE Ethernet power supply in the process of the black part. Only so PoE supply voltage will cause a lot of friends doubt, because there are a lot of non standard PoE devices on the market, the different output voltage of the PoE equipment, 12V, 24V, 48V and so on, especially the output voltage of some equipment is 48V, and it seems like the PoE standard, but the actual difference is very big, very confusing.

In fact, the supply voltage of PoE concerns with a multimeter can be done. Take the electric meter PSE power supply equipment (1,2, 3,6 or 4,5 feet, 7,8) if there is 48V or the other voltage output is non-standard (not to do testing, 48V or other voltage direct power supply); if the measurement is not a voltage (2-10V beats, on the PD end were detected for standard) PoE (meter is not a valid PD, not without power supply voltage).

PSE 12V/24V DC power supply, power supply directly to the PD or non standard standard in

PSE 48V DC power supply, to reach PD, step-down power supply in non-standard PoE

PSE detection PD, grading, power supply, step-down power supply, the last 48V power supply ---------------------802.3af/at standard PoE

Hong Runguangxiang‘s PoE switches are standard, in line with the 802.3af/at protocol power exchange, only for 802.3af/at terminal equipment power supply, do not need to worry about the damage to private standards of PoE or non PoE devices. We have been creating cost-effective PoE products and equipment solutions, and provide a comprehensive and thoughtful after-sales service, by the majority of engineering, integrators and the love of the affirmative.