Are these suitable?

[Oldmanandhistoy]

I have a feeling this question may get ignored but I hope not.

Simple question; are these capacitors suitable for a PSU for stepper drives?

http://www.rapidonline.com/netalogue/specs/11-1534.pdf

Main information at bottom of the sheet and if they are ok and you are from the UK then well worth a look at only £1.76 each.

Any help as always very much appreciated thank you,

John

[Al_The_Man]

They seem to have decent ratings, and they should be quite suitable for a PSU IMO, in fact they show this in the application.

[Oldmanandhistoy]

Wow Al the man that was quick; my opinion of you just gets better and better.

While I have your attention I have an other simple question for you (not for me very electronically challenged)

If I have a toroidal transformer rated say 300va which has two secondary windings and I wire then series what current can I get; is it 300va or 150va? I did spend a lot of time looking on this forum for the answer but found nothing.

Thank you very much for your time.

John

[joecnc2006]

I thought i read somewhere a safe bet would be 2,000uf per 1amp. this will give pleanty of room. and min. is 1,000uf per amp

[Oldmanandhistoy]

Originally Posted by joe2000che I thought i read somewhere a safe bet would be 2,000uf per 1amp. this will give pleanty of room. and min. is 1,000uf per amp

Hi Joe,

I use C= I x 80000/V = C in uf

John

[Al_The_Man]

The VA does not change, This is basically the power rating of the Txmr.
The current capability will however so whatever the final voltage is decides the max current available from the winding, IOW divide the VA by the secondary voltage to arrive at available current.
Al.

[Oldmanandhistoy]

Originally Posted by Al_The_Man The VA does not change, This is basically the power rating of the Txmr. The current capability will however so whatever the final voltage is decides the max current available from the winding, IOW divide the VA by the secondary voltage to arrive at available current. Al.

Thanks again Al