Passive POE switch.

Help us decide what to build next.
Spofi
Member
 
Posts: 8
Joined: Tue Nov 03, 2015 12:13 am
Location: Spokane, WA
Has thanked: 2 times
Been thanked: 2 times

Passive POE switch.

Sun Dec 20, 2015 6:08 pm

I would love to see something like the WS mini or the WS 12-250-dc but in a passive POE with support down to 10V

User avatar
lligetfa
Associate
Associate
 
Posts: 1191
Joined: Sun Aug 03, 2014 12:12 pm
Location: Fort Frances Ont. Canada
Has thanked: 307 times
Been thanked: 381 times

Re: Passive POE switch.

Sun Dec 20, 2015 6:14 pm

The WS-12-250-DC can run all the way down to 9V input.

Spofi
Member
 
Posts: 8
Joined: Tue Nov 03, 2015 12:13 am
Location: Spokane, WA
Has thanked: 2 times
Been thanked: 2 times

Re: Passive POE switch.

Tue Dec 22, 2015 12:36 am

Yes but not all of the equipment on my tower needs the full 24Volts. I could save some precious energy on my solar installations by eliminating the loss from up-converting from 12v and by eliminating the cooling fan (with the WS mini form factor).

User avatar
lligetfa
Associate
Associate
 
Posts: 1191
Joined: Sun Aug 03, 2014 12:12 pm
Location: Fort Frances Ont. Canada
Has thanked: 307 times
Been thanked: 381 times

Re: Passive POE switch.

Tue Dec 22, 2015 1:55 am

So then basically you want Vout to follow Vin like Routerboard or TS5 does. No regulating, no upconverting.

Spofi
Member
 
Posts: 8
Joined: Tue Nov 03, 2015 12:13 am
Location: Spokane, WA
Has thanked: 2 times
Been thanked: 2 times

Re: Passive POE switch.

Tue Dec 22, 2015 2:21 pm

Exactly, but with the performance of the netonix. Ive used the Mikrotik RB, Tycon and Ubiquiti switches and none of them have done as well as the netonix has.

User avatar
rebelwireless
Experienced Member
 
Posts: 607
Joined: Mon Sep 01, 2014 1:46 pm
Has thanked: 31 times
Been thanked: 136 times

Re: Passive POE switch.

Tue Dec 22, 2015 8:52 pm

I could have seen a use for this in the past. Newer ubiquiti radios don't run as low as older ones did though. You really need something like 16v to reliably power a RocketAC. I've seen RocketM still working at around 12v, but not the AC line.

A decent switching boost converter with mosfets is 90%+ efficient. Consider the added cost in 10% more batteries vs any feature you find on a switch.

Anyway, I'll take the variable input and some extra draw over running APs under-volted. When the volts start to drop on your battery bank it's nice to be able to keep comms up to send an alert to see flaky radios IMO.

Return to What should we build next

Who is online

Users browsing this forum: No registered users and 14 guests