PSU : prices and differences

[Gytis]

Thank you for the simple explanation Dean!

Get in touch if you want to build one.!!

You think that you have enough patience with me if I choose DIY route?

[birchy]

I'm sure that if you ask nicely, one of the guys on here will make you a PSU for cost price + a couple of beers.

[Jonathan]

one of the guys on here will make you a PSU for cost price + a couple of beers.

Wouldn't be the first time ;)

Get the bits sent to me and I'll solder it up for you - it wont take more than 15 minutes. In fact I think I have a spare new 500VA toroidal transformer... 4 motors at 3.5 amps, so you need about 70% of 4*3.5 which is 9.8 amps. 9.8*50V=490VA ... so the transformer I think I have is perfect.

[birchy]

Jonathon, wouldn't it be easier for you to buy the parts, make the PSU and send him a paypal invoice? There seems to be a serious lack of decent quality PSU's on eBay...

[Gytis]

Wouldn't be the first time ;)

Get the bits sent to me and I'll solder it up for you - it wont take more than 15 minutes. In fact I think I have a spare new 500VA toroidal transformer... 4 motors at 3.5 amps, so you need about 70% of 4*3.5 which is 9.8 amps. 9.8*50V=490VA ... so the transformer I think I have is perfect.

Thank you very much Jonathan for the offer!
But I like to learn new things, so I'll try DIY route., just in case if Dean lose his patience with me, then I'll be back to you with big case of beer and I ask you to do it for me.

Thank you!

[JAZZCNC]

You think that you have enough patience with me if I choose DIY route?

No problem mate I've helped proper thick twats in the past and they got it in the end. . .Lol

[Gytis]

No problem mate I've helped proper thick twats in the past and they got it in the end. . .Lol

Hi Dean,
I'm ready to go DIY route, when you have time can you point me out where I have to look and what I have to buy for the PSU?

Thank you!

[Jonathan]

The mains things are;

Capacitors:
SNAPIN:4700UF/63V Panasonic (ECES1JU472N) 25.5 X 50 | eBay

Transformer (other places have them too):
Toroidal Transformer 500va 0 50v 0 50v

Rectifier (excessive rating, but means you don't need a heatsink so it's easy):
KBPC5006 Bridge Rectifier 50A 600V

Plus you'll probably want a fuse holder and a switch...

[Clive S]

That cap you have linked to looks like 63V rating to me used with the transformer that you linked to would that not be a bit low? ... Clive

[Jonathan]

Sorry, I accidentally linked to the wrong transformer. This is the correct one:

Toroidal Transformer 500va 0 35v 0 35v

It's 35V, so 35*2^0.5-1.1=48.4V approximately, which is fine.