Re: [CAD_CAM_EDM_DRO] transformer for power supply

I have received some great responses and am satisfied. Don't think that I
asked again. For whatever reason it took SEVERAL days for my question to
post the first time. The second posting was actually the first one I posted
to the list which got lost somewhere.

I think I will go with Tony's suggestion and get 75V at 13A, perfect for a
gecko.

BTW, will Mach 2 support gecko drives?
==============================================
Thomas Powell (VMOA 741)
1994 NOS injected T-Boost sales
Tourmaster V-Max Clear clutch cover sales
"LAFGAS" Handlebar brackets
Contact me at: tppjr@...
http://imageevent.com/tppjr (photopage)
==============================================

----- Original Message -----
From: "Jon Elson" <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, October 01, 2003 7:48 PM
Subject: Re: [CAD_CAM_EDM_DRO] transformer for power supply


>
>
> Thomas Powell wrote:
>
> >With the following speced toroidal transformer what DC power supplies are
> >possible?
> >
> >115/230 Volt, 50/60Hz Output: 20 VAC @ 10 AAC 118 VAC @ 13 AAC
> >
> >I will be inputting 220.
> >
> >What will the AAC rating be for DC?
> >
> >
> That information is not clearly indicated in the description. Some
> transformers
> are rated as "control transformers", and expect a resistive load. So
> you'd get
> 10 Amps only to a resistive load, and maybe somewhere in the neighborhood
of
> 6 A into a capacitor-input filter (that is the official term for a
capacitor
> immediately following the rectifier). I'm assuming you want to use this
> as a
> 28 V power supply. In that case, you could probably get more wattage, as
> the major winding (the 118 V one) would not be used. But, I can't tell,
> as the 20 A AC spec is really no spec at all. What is the duty cycle?
> 10% or continuous? What is the environmental spec? Forced air cooling,
> or a sealed box at 50 C? What is the output spec, cap input filter,
> resistive
> or other?
>
> As for voltage, as I said yesterday, you could get 28 V DC from the 20 VAC
> winding, 167 V DC from the 118 V AC, or 139 V DC by using the 20 V
> winding to buck part of the 118 V winding.
>
> Again, you don't tell us what you are looking for, so it is very hard
> to answer such questions.
>
> Jon
>
>
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