48VDC 1500W PSU

[Dirk Bruere at Neopax]

We just bought three Nortel 1200W 48V supplies off Ebay for $199 each.
(They were heavy, and I think the international shipping cost as much
again.)

The trick is to search for 'rectifier', because that's what telecoms
folk call what you would call a 48V PSU.
With luck, you can find a dealer who has several of the same type to
sell.

That's probably OK for the development phase, but we are going to need them in
qty later on when we ship.

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

 

[Walter Harley]

That's more like it.
By the time we get into the thousands we can rip off their basic design
and do our own confident we can make it cheap in China

Mean Well is already in China, of course. So the only advantage you gain by
doing it yourself is whatever their profit margin is, and it's probably
tiny; in return for which, you need to do some engineering, stock a bunch of
expensive parts including magnetics, and do a lot of testing. If it were
me, I'd be inclined to let Mean Well do the dirty work. After all, you're
not planning on rolling your own electrolytics, or mining your own copper,
right?

 

[Dirk Bruere at Neopax]

Mean Well is already in China, of course. So the only advantage you gain by
doing it yourself is whatever their profit margin is, and it's probably
tiny; in return for which, you need to do some engineering, stock a bunch of
expensive parts including magnetics, and do a lot of testing. If it were
me, I'd be inclined to let Mean Well do the dirty work. After all, you're
not planning on rolling your own electrolytics, or mining your own copper,
right?

I've seen a PSU that could supply 1kW (although not at 48V) and it was *tiny*.
I doubt the parts cost would get to $80 in qty

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

 

[Ken Smith]

Anyone know a source that is not ridiculously expensive?

4 car batteries in series?

 

[Dirk Bruere at Neopax]

4 car batteries in series?

So, you would recommend shipping these with each product eh?
Remind me never to hire you...

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

 

[Rich The Newsgroup Wacko]

So, you would recommend shipping these with each product eh? Remind me
never to hire you...

Nah. You just mark them, "Batteries Not Included". ;-)

 

[Ken Smith]

So, you would recommend shipping these with each product eh?
Remind me never to hire you...

Think of all the advantages:

You can put them in a weird shaped box with terminals on one end so it
slides into the product and makes contact. You then can sell the
batteries at 10X the going price because noone else makes one that fits.

The product will have a low theft rate.

I won't blow away in the wind.

Its "cordless".

 

[Ken Taylor]

I've seen a PSU that could supply 1kW (although not at 48V) and it was
*tiny*.
I doubt the parts cost would get to $80 in qty

Then buy one and modify it if it's so easy and cheap to do. Or you could
recompense someone for doing the work for you.

Cheers.

Ken

 

[Never Mind]

So, you would recommend shipping these with each product eh?
Remind me never to hire you...

Ken's reply was well within the parameters of your OP.

No need to remind me not to hire you as a [insert title here]...

 

[Never Mind]

No, but you are a sad twat for asking so I guess... in a general worldwide
sense you don't know how to give yourself an orgasm and you won't take
advice so it sucks to be you.

Chill... have another slice of double-chocolate-with-lard heartstopper.

 

[Dirk Bruere at Neopax]

Then buy one and modify it if it's so easy and cheap to do. Or you could
recompense someone for doing the work for you.

I don't want 'one'.
I want a supplier of hundreds.
Maybe when we need thousands I will get one reverse engineered and put our own
version through standards testing etc. But for now I have too much else to do.

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

 

[Dirk Bruere at Neopax]

Ken's reply was well within the parameters of your OP.

So is solar power and having a small thermoelectric Pu generator.

No need to remind me not to hire you as a [insert title here]...

Very true.
I don't work for other people these days.

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

 

[Rich Grise]

I don't want 'one'.
I want a supplier of hundreds.
Maybe when we need thousands I will get one reverse engineered and put our
own version through standards testing etc. But for now I have too much
else to do.

You buy one, modify it, draw up the new schematic & P/L(BOM), send
them a print of your mod in their unit, and ask for a quote.

Good Luck!
Rich

 

[Dirk Bruere at Neopax]

You buy one, modify it, draw up the new schematic & P/L(BOM), send
them a print of your mod in their unit, and ask for a quote.

Would probably work if they were Chinese.

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

 

[Ken Smith]

So is solar power and having a small thermoelectric Pu generator.

It depends on how you define "rediculously expensive". 4 car batteries at
$40 each is only $160.

 

[Dirk Bruere at Neopax]

It depends on how you define "rediculously expensive". 4 car batteries at
$40 each is only $160.

That seems to be correct.

--
Dirk

The Consensus:-
The political party for the new millenium
http://www.theconsensus.org