[ARC5] 28 volt high-current supplies?

[J Mcvey]

 Raw SMPS are usually not suitable for radio power supplies. Espaecailly those cheap ones, which probably don't have any FCC compliance at all.
There are some decent military SMPS radio supplies out there like PP-8474G or the GEI24-RPA-T.I have both . The latter is more modern and has better regulation . I had pigtail onnectors that are supposed to power radios in a rack, but I just use the charger output. 

    On Thursday, February 17, 2022, 07:58:47 PM EST, Charles via ARC5 <arc5 at mailman.qth.net> wrote:  
 
  
Thanks Meir, I saw that while searching... it's very obviously two 12 volt supplies wired in series without any diodes to avoid potential back-biasing during startup. Really professional job on the "24" sticker too (sarcasm).
 
There's a perfect transformer if I decide to go linear, and the weight doesn't matter... but they just want too much!
 
https://www.ebay.com/itm/165244216125
 
-Charles
 

 
 On 2/17/22 18:54, Meir Ben-Dror WF2U wrote:
  
 
This one should do it...
 
  https://www.ebay.com/itm/24-Volt-100-Amp-DC-Power-Supply-2400-watts-/164935380985?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l6249&mkrid=711-127632-2357-0
 
  73, Meir WF2U
  Landrum, SC
 
  Get BlueMail for Android  On Feb 17, 2022, at 6:54 PM, Charles via ARC5 <arc5 at mailman.qth.net> wrote: 
 Looking for ideas on 24-28 volt supplies that won't break the bank. 
Shipping on big iron is REALLY expensive these days even if a suitably 
sized transformer can be found... Switching supplies from China aren't 
too bad. Two big batteries and a smaller charger to keep them up when 
not operating seems to be about the best compromise.

I'd like to be able to make 100 amps DC (which needs a 240 volt outlet, 
of course).

Any thoughts? thanks

-Charles

WB3JOK/0 since 1976

ARC5 mailing listHome: http://mailman.qth.net/mailman/listinfo/arc5Help: http://mailman.qth.net/mmfaq.htmPost: mailto:ARC5 at mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: https://www.qsl.net/donate.html 
  ______________________________________________________________
ARC5 mailing list
Home: http://mailman.qth.net/mailman/listinfo/arc5
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:ARC5 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: https://www.qsl.net/donate.html  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20220218/3a27b620/attachment-0001.html>