Eltek 'rectifiers' do appear to work well but they are designed for
charging 48V (4 x 12V) battery banks at typically 53-57V and may not
have the regulation you would expect.
I am using Meanwell/Sunpower RSP-3000-48 supplies as Future Electronics
(USA) had them priced ridiculously cheap a while back and they were
under half the price that they were in Europe!
Another alternative to consider is the HP 48V 2950W power supply for the
HP Proliant BL class servers (HP part number 406424-001) - try
searching Ebay for "HP 48V 2950W" - they often sell for $30-99 plus
shipping.
You can see a HP supply being used in PE1CKK's 2KW 144MHz amp video on
Youtube:
http://www.youtube.com/watch?v=io3KeGlJmCs
Mike G8TIC
On 03/02/2013 21:57, Dan Levin wrote:
> Paul,
>
> My sense is that you are better of buying a used 50v supply from the
> telco equipment industry than you are trying to build one. I
> especially like the Valere rectifiers, like this one:
>
> http://www.ebay.com/itm/Eltek-Valere-H2000A1-2000W-Hot-Pluggable-AC-DC-Power-Supply-Rectifier-Module-/130844461639?pt=LH_DefaultDomain_0&hash=item1e76f00a47
>
> $119 for a serious, professional grade, 48v x 40 amp power supply is
> pretty hard to beat. These guys have excellent output power quality,
> and for a bonus can be controlled via a digital interface if you feel
> like it.
>
>
> Good luck,
>
> ***dan, K6IF
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