Hi, this is Wayne again with a topic “Power…Over An Ethernet Cable?”.
Hate Tangled messes of cables, sick of always having to stay close to an outlet. Well, there’s actually a way to power certain devices without having an outlet anywhere nearby, and I’m not talking about a battery. I’M talking about power over Ethernet or Poe, not to be confused with the Raven guy. The basic idea is simple: a single ethernet cord carries both power and data, allowing you to say never more to a separate power cable and you don’t even need any special ethernet. Cable, most of us use Cat5e or Cat6 these days for internet and either one of these will work just fine, but unfortunately, you can’t just connect any two gadgets with an ethernet port and expect power delivery, the client device and the router or switch you’re connecting it To both have to support Poe. The good news here, though, is that Poe switches typically don’t cost that much more than regular ones, but what kinds of things really benefit from having Poe to begin with? One big one is wireless access points. You can often get better wi-fi performance by using a standalone access point instead of the one built into your off-the-shelf router, and many of these access points support power over ethernet.
This can be useful at home, but it’s especially common in larger commercial or high density environments. That need multiple access points across far-flung distances, where it would be impractical to run both ethernet and power cables. There are also Poe clocks available in both analog and digital. A single ethernet cable both provides power and connects the clock to an internet time server. So you’ll never have to worry about setting the clock or changing the battery, and yet more applications include VoIP, where one ethernet cable going to your desk phone gives you voice capabilities and power. Intercoms, smart door, locks and surveillance cameras can all also use Poe.
Basically anything that needs a constant data connection, but doesn’t have massive power requirements can benefit but hold on a second. How the heck does a regular ethernet cable carry both data and power? I will tell you right after we thank our sponsor freshbooks, the invoicing and accounting Solution. That’S built for owners and clients, freshbooks users save 11 hours a week that they used to spend sorting through invoices and financials plus 94 of freshbooks users say it’s super easy to get up and running and with award-winning support.
You’Re never alone switch to freshbooks today and join over 24 million people who love it and you can try it for free for 30 days. No credit card required so go to freshbooks.com techwiki to get started. So you can send data and Power on the same cable, because the ethernet protocol moves data using something called differential signaling. Basically, two signals are sent that have the same voltage, but one is positive and one is negative. The orientation of the positive and negative signals determine if the bit is a one or a zero power.
Over ethernet just applies a larger voltage to the wiring inside the ethernet cable. It doesn’t affect the positive negative difference of each bit, so data transmission is unimpeded, but speaking of larger voltages, just how much power can Poe deliver well, there are actually a few different versions of the standard that deliver different watages, which we’ve summarized here on this chart. Those higher wattage versions are useful for devices like high powered wireless access points or rotating cameras that need the extra wattage to turn a motor so yeah. All this sounds pretty cool, but before you rush out to buy a bunch of Poe enabled stuff like their Pokemon cards, keep this caveat in mind. Many Poe devices don’t even have a regular power port and so can only be powered via Poe and if you don’t have a switch or router with a Poe Port you’ll need to pick up something called a Poe injector her and don’t worry. This isn’t some kind of weird cyber syringe. Rather it’s a little wall, wart that plugs into a standard outlet, but also features a pair of ethernet ports. One connects to the client and the other to your router or switch just make sure. The standards supported by the injector is at least the same as what your client device needs to ensure it gets adequate power. You can even combine an injector with a Poe splitter and power.
A non-poe client as well also remember that Poe has a maximum range of 100 meters without a repeater and while that’s a fairly long way, you can eat through that fast. If your cable run has lots of twists and turns speaking of twists, that’s the end of this episode. I bet you didn’t see that coming guys, thanks for watching the video like it if you liked it dislike it, if you disliked it check out our other videos, comment below with video suggestions and don’t forget to subscribe to techwiki and follow techwiki we’re making these actually All the time this wasn’t the only one we ever made, there’s a there’s, so many there’s so many other ones and they’re coming more .