Re: [CAD_CAM_EDM_DRO] How do i pick out a transformer?

You may want to look at the Plitron web page www.plitron.com.

First of all, have you ever measured your local power outlet. Don't make
the mistake like I did several years ago thinking that it was 110. In fact
mine was over 125. Make sure that you calculate for worst case if the
output is going to be very close to the maximum of the drive. I always like
to stay at least 10% below the max.

To calculate the voltage that you will need from the transformer, divide the
output by 1.4. This will give you the transformer RN\MS voltage.

Bob Campbell
http://www.campbelldesigns.com
Breakout Boards
VisualMill 5.0 basic

----- Original Message -----
From: "twoextrememachine" <twoextrememachine@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, November 14, 2003 11:58 AM
Subject: [CAD_CAM_EDM_DRO] How do i pick out a transformer?


> I'm finally ready to build a power supply which doesn't appear to be
> to difficult. But, I am having issues picking out a toroid
> transformer. I know i have approx 110VAC or the wall socket, and I
> need 100VDC and 20amps, which is the max for a rutex drive of course
> slightly underpowering my motors which i feel fine about. I'd rather
> under juice them than have the ability to over juice them. So when I
> look at transformers what should I look for, to get the desired
> output? I can handle the rest with the bridge rectifier and
> capacitor.
>
>
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