Re: [CAD_CAM_EDM_DRO] Power Supply

Probably, that rtoriods are most efficxient transformers for high frequency
(i.e. switching power supplies) In a switcher you have to use DC from the
mains, and turn it on and off to control the output voltage. SCR's and
Triacs can turn current ON but cannot turn it OFF until the the input
voltage goes to zero. Therefore they only work on circuits that are driven
by AC or pulsing DC and do not allow the high frequency regulation to work.
Sincerely Mike Carpenter

----- Original Message -----
From: "kilroy2k1" <tszaran@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, July 29, 2002 8:11 PM
Subject: [CAD_CAM_EDM_DRO] Power Supply


> I'll toss this out to the EE's out there..
> I was wondering why most stepper systems are using Toroid
> tranformers for the main V supplies. Is there any benefit to using
> that vs SCR's or Triac based supplies, or is it more of a convienence
> issue?
> Thanks
> Tom S.
>
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