We always keep a couple of Netonix DC switches around that take in 12v and 
output up to 48.

Rory

From: Af [mailto:[email protected]] On Behalf Of Bill Prince
Sent: Tuesday, July 11, 2017 9:05 AM
To: [email protected]
Subject: Re: [AFMUG] Off sources for 48v 2.5 a power supplies


If the power supplies have isolated outputs, you should be able to "stack" them 
in series to get more volts (as in the case you're looking at, two 24V in 
series will get you 48V).

Parallel hookup CAN get you more amps, but the power supplies can buck each 
other if they are not designed for it. You need to take that into account.



bp

<part15sbs{at}gmail{dot}com>


On 7/11/2017 8:57 AM, Steve Jones wrote:
That actually works? Does that apply in parallel as well if I have the voltage 
I need but not the amperage? I just assumed multiple power supplies connected 
together would be like crossing streams and call up some demonic stay puff 
marsh mellow crickets or something

On Tue, Jul 11, 2017 at 10:02 AM, Chuck McCown 
<[email protected]<mailto:[email protected]>> wrote:
Two 24 volt wall warts in series.  4 - 12 volt wall warts in series.

From: Colin Stanners
Sent: Monday, July 10, 2017 8:58 PM
To: [email protected]<mailto:[email protected]>
Subject: Re: [AFMUG] Off sources for 48v 2.5 a power supplies


Most professional security cameras are either 24v AC or powered off a .AF PoE 
switch with a built-in PSU so no external 48v. Your local electronics supply 
would be the best chance.
On Jul 10, 2017 7:18 PM, "Steve Jones" 
<[email protected]<mailto:[email protected]>> wrote:
I meant off sources, local type joints that would have it in a pinch, like 
plumbing shops carry our masts in stock, but theyre called water pipe and come 
in 21 foot lengths. You have to get them cut, and the cuts not galvanized,, but 
its literally the same pipe (thanks sitepro for forgetting your nail polish 
wipe)
I really figured the security joint would have it, with multicam ip cams and 
all.

On Jul 10, 2017 7:07 PM, "Rory Conaway" 
<[email protected]<mailto:[email protected]>> wrote:
Amazon.  Look for 48v 144w.

Rory

From: Af [mailto:[email protected]] On Behalf Of Steve Jones
Sent: Monday, July 10, 2017 4:59 PM
To: [email protected]<mailto:[email protected]>
Subject: [AFMUG] Off sources for 48v 2.5 a power supplies

I needed one of these in a pinch today called local electricians and a security 
outfit, im betting the security joint has them and doesnt realize it.
Any other ideas on where to look in a pinch?


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