Re: [CAD_CAM_EDM_DRO] Cheap Power Supply

Frank wrote:-

> I had mentioned using a 10 amp battery charger as a source for a
> transformer. It was about 39 bucks. Since I robbed the transformer in
> mine I finally decided to buy another charger. For those looking for a
> cheap 10 amp transformer, the charger is EverStart model # WM-51A-PE
> at Wal-Mart for 29.95. At any rate it's probably the cheapest 10 amp
> transformer around.

Who needs transformers? I'm putting a system together and my intention is
to use a computer PSU to power the stepper drives. 5V at 20A, 12V @ 10A and
a few other voltages as well. As it's a switched mode supply, there's no
heavy transformer, not a vast amount of heat and it's regulated.

I do, however, have a question which SKS may be able to answer. I read
somewhere that these PSUs don't like being run off-load - as one might do
before the system is complete. Any experience out there?

Thanx

Mike Chaney
http://www.shaymaker.pwp.blueyonder.co.uk (day job)