Re: [CAD_CAM_EDM_DRO] Cheap Power Supply

Ummm.....those of us that need 10-15A at 60-70V need transformers!

Matt

-----Original Message-----
From: Mike Chaney <michaelchaney@...>
To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO@yahoogroups.com>
Date: Wednesday, November 28, 2001 4:51 AM
Subject: 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)
>
>
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