Is there anyway to judge the quality of...

[andy_con]

psu's?

seen these on ebay

http://cgi.ebay.co.uk/12V-20A-240W-S...item415a4df576

http://cgi.ebay.co.uk/New-12V-DC-29A...item1c1ca4d4e9

[catalanjo]

psu's?

seen these on ebay

http://cgi.ebay.co.uk/12V-20A-240W-S...item415a4df576

http://cgi.ebay.co.uk/New-12V-DC-29A...item1c1ca4d4e9

You have to buy them first unfortunately then test them under different loads to find out how the output voltage changes with current draw!
This is a bit of a problem with some Chinese ones. They do supply the stated current but NOT necessarily at the stated voltage. (The voltage dips at fairly low current output).

Cheers
PS.
Fleximods do not tolerate this kind of behaviour and get upset.!

[norty303]

I think I bought the 10A version from bestbuy or somewhere similar on ebay. They all look the same. First one broke after a little while. So I ordered 2 more, just in case of another breakage.
Still cheaper than buying what appears to be (aesthetically) the same product from a UK seller.

[PhantomRage]

what about of PC supplys? why not use them?

[andy_con]

what about of PC supplys? why not use them?

they are poor quality

[LaNeK779]

andy i would be extra cautious of the second link you posted.
it looks like a copy of the meanwell 12v 29a psu

why not get the real thing here? it is not much more expensive. http://cgi.ebay.co.uk/12V-DC-29A-350...item1c1d1484c0

i wish i could give you more info, but i just ordered mine from this seller on thursday, so it is not here yet. in any case, sure electronics is a 5star seller, i hve bought stuff from them in the past and they always come through with it

just my 2p

[White-Light]

Andy have you considered Tracopower or are they too expensive?

I ask because I know our Dutch friends posted info on these a while ago and Pelosh now sells these for use with Kvant systems so I would presume from that they're very high quality;

http://www.synchrovision.co.uk/produ...u-tracopower-3

[andy_con]

sadly on a budget as im trying to build two 3watt projectors

[planters]

I had this exact problem with a pair of cheep Chinese PSUs current dipping at 10% load and red lighting the P3s. Since replaced with slightly less cheep PSUs marketed under the Mean Well name. All three have worked perfectly.