TP-Link 802.3at/af Gigabit PoE Injector , Non-PoE to PoE Adapter, supplies up to 15.4W, LED Indicator,Plug & Play , Desktop/Wall-Mount ,Distance Up to 100m, Black (TL-PoE150S)

Product Information

There are many types of PoE switches available on the market, some have a couple of ports that can supply PoE while others a full PoE switches. PoE switches are more expensive then normal switch, so sometimes it’s cheaper to buy one small Power over Ethernet switch and add a normal switch next to it. Always be careful you connect the network cable with PoE to the right device, if you accidentally connect the network cable with the power over ethernet to your switch you risk destroying the switch when using passive PoE. is used for a device that consumes up to 13 watts of power. The 802.3at standard support up to 25 watts of power. This is something you will have to take into account when you are planning your network. If you are worried about voltage losses in longer cable runs (and you should be!) then certainly feeding a higher voltage and converting down remotely is a good idea. If you are upgrading your network and planning to use PoE device, then I recommend adding a Power over Ethernet switch to your network setup. This is the most convenient way to power up your PoE enabled devices.

Electrical current flows in a loop. That’s why you need two conductors to establish current flow over a cable. A PoE wire can use any of the wire pairs as a single conductor. This means PoE wires can use either the Data pair or the Spare pair to flow current through them. Risks associated with Passive PoEDevices of the type considered, as we notedabove, are classified into additional varieties. So, the PoE adapter can be a power supply. In its structure there is a power supply unit, as well as a conjugation element, which can be equipped with a galvanic isolation and in this case look like a small box or a conventional wire. The PoE power adapter, in fact, is sometimes referred to as an injector. In the Russian market there is a large number of solutions of this type. For example, the PoE TP Link 150S adapter is popular. The most important technical characteristic of the device of the corresponding type is a stabilized voltage. The optimal indicator is 48 V, if we talk about the marked model of the device from TP Link. If you properly connect the adapters,using technology Power over Ethernet, problems with the organization of the network should not arise. But some difficulties, due to the specifics of the standards used in such systems, can still appear. For example, the PoE-Switch can determine that the active source is not a consuming device, and the network can be temporarily de-energized due to the fact that the system uses a passive splitter. It is necessary, in turn, to replace it with an active one. Another possible problem is switching off the voltage when trying to connect the consuming device to the switch. You can solve it by installing an additional device - PoE-converter. A passive PoE injector, however, adopts PoE technology that does not conform to the 802.3af, 802.3at, or 802.3bt standard. Passive PoE devices usually run on 18 to 48 volts DC. If the wrong voltage is connected, it may cause permanent electrical damage to the device. PoE port power supply – PoE vs PoE+ vs PoE++: Make sure your injector's PoE standard is compliant with your PDs. There are three main PoE standards—802.3af (PoE), 802.3at (PoE+), 802.3bt (PoE++). They support a power supply of up to 15.4 W, up to 30 W, and up to 60 W /100 W respectively. The fan position on the new PoE+ HAT has changed so now the ventilation slots in the new Uputronics GPS HAT for example obscure the fan. May be an issue with other HATS?

A PoE injector, also called midspan or PoE adapter, can be implemented to make a non-PoE compatible switch work with PoE devices by powering compliant devices over a single Ethernet cable. Cisco developed and first delivered a proprietary version of PoE in 2000, to enable scalable and manageable power delivery to Cisco IP-telephony handsets. PoE wires have grown in popularity mainly because they reduce the need for electrical wirework in the home. With every new technological innovation, something new is introduced. And when we are talking about the power supply of electrical gadgets, shifting from hard-wiring to ethernet powered or wireless is the latest trend. Simple: 7805 or 7812 regulator to drop from a higher voltage. Gets warm, wastes power, current in (at say 15v) is same as current out to device.

Consuming devices

I have some issues that I would like to share with you if I may. There could be some user error here but hopefully if there is you can point that out! :) Once again we remind that in the injector and splitter, the tips of the twisted pairs 4, 5, 7 and 8 (blue, blue/white, brown/white and brown) must be cut and left in open circuit. If this is not done or if there is any kind of anomaly that imposes voltage in these pins, the network devices might be damaged. It’s necessary to guarantee that these pins are left opened, preferably even isolated. Power over Ethernet (POE), a term you see more and more on network products, but what is it? And how does it work? In short, with Power over Ethernet, you can power a device and supply a network connection to it with a single network cable. Power over ethernet is injected into the same cables at the data, with a voltage around the 48 volts. This way it’s safe for users and still high enough to work efficiently. 802.3af vs 802.3at