Introduction to PoE
PoE technology enables Ethernet switches to deliver power to remote devices over the same cable through that data is transmitted. This is done using the spare pairs of wires in the Ethernet cable for power instead of just for data transmission.
The PoE switch uses an internal power supply to inject DC power onto the Ethernet cable. The device receiving power (called a Power over Ethernet Powered Device or PD) extracts this DC power and uses it to operate.
Power over Ethernet technology is growing in popularity because it simplifies cabling infrastructure and reduces installation costs. In addition, PoE-powered devices can be located anywhere there is an Ethernet connection without needing a separate power outlet.
To learn more about how PoE works, check out our blog post, How Does PoE Switch Power to the PDs Over Ethernet?
PoE Network Switch
PoE (Power over Ethernet) is a technology that allows network devices to be powered by the Ethernet cable. A PoE network switch can power multiple devices and can be used with any type of Ethernet cable. PoE switches are available in various sizes and capabilities and can be used with a wide range of networking equipment.
When selecting a PoE switch, it is essential to consider the power required by the devices powered by it. The power requirements of each device must be within the switch’s capabilities. In addition, it is essential to consider the environmental conditions in which the switch will be used. PoE switches are designed for use in various environments, but some models are better suited for use in harsh or outdoor conditions.
Power over Ethernet Injector
A PoE injector is a device that supplies power to a network device, such as a switch or router, over an Ethernet cable. The injector draws power from a mains outlet and delivers it to the Ethernet cable, which then supplies power to the connected device. PoE injectors are used when devices that require power are located in areas where there is no central power available.
Power over Ethernet midspan device
Power over Ethernet midspan devices provides power to PoE-powered devices (PDs) over an Ethernet connection. Midspan devices are typically used when it is not possible or convenient to install a PoE switch or when the PDs are not compatible with the switch.
Midspan devices can be used with any Ethernet switch, and they support all PD types. Midspan devices inject power onto the Ethernet cable using the same pairs as the data connection. This means there is no need for a separate power cable, which simplifies installation.
Midspan devices are available in various power levels, from 5 watts to 60 watts. The most common power levels are 12 watts and 24 watts.
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Conclusion
In short, a PoE switch uses power over Ethernet to supply electricity to network devices. It sends electrical current along the same wires that carry data. This article has helped you understand how PoE works and why it is such a popular technology nowadays.
