Re: [CAD_CAM_EDM_DRO] Whither cheap power transformers these days?

Carlos,

Thanks for the reminder. I'm now interested in your findings with your big
transformer. From your earlier description, it sounds like the
white/blue/purple/gray/green/black are a pair of tapped primaries. Like
others suggested, try connecting 12.6VAC to the brown leads and measure the
primary leads to see if they're tapped for over or under 120 volts. I'd
really like to get a DC voltage just under 80 volts so I can maximize my
steppers. That translates into about 56VAC on the secondary. The best your
transformer could do is 43VAC and a full-wave rectifier (~60VDC) UNLESS
games could be played with the taps on the primary. Keep us posted on what
you find out.

Regards,

Paul R. Hvidston, N6MGN
ACKSYS Engineering
Upland, CA

----- Original Message -----
From: "Carlos Guillermo" <carlos@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, February 24, 2002 8:14 PM
Subject: RE: [CAD_CAM_EDM_DRO] Whither cheap power transformers these days?


> Try Brigar Electronics. I just got a toroidal for $60 good for
> 43VAC at 20 A. Their catalog is online.
>
> Carlos Guillermo
> VERVE Engineering & Design
>
> -----Original Message-----
> From: Paul R. Hvidston [mailto:paul_hvidston@...]
> Sent: Sunday, February 24, 2002 9:59 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Whither cheap power transformers these
> days?
>
> I'm looking for about ~55VAC, >=10A to run some big old steppers
> with
> geckos. Of course, I could also divide and conquer with a bunch of
> 4A
> transformers. I would just really like to get close to 80 volts
> max DC input
> to the geckos, and I'm not having much luck locating any iron with
> the right
> voltage and current ratings. Are there any Internet electronic
> surplus sites
> out there with good deals currently? Pointers would be
> appreciated.
>
> Regards,
>
> Paul R. Hvidston, N6MGN
> ACKSYS Engineering
> Upland, CA
>
>
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