RE: [CAD_CAM_EDM_DRO] Re: looking for a 20vac transformer resource

To get the right voltage from a transformer, if it is a open frame wind 1
(one) turn around the core and measure the voltage on this turn.

Next either add or remove turns to get the right voltage

Example if you have 0.5 volts across one turn then your turns per volt= 0.5
if you have a 20 volt transformer with 0.5 turns per volt then add 3 (three)
turns to bring the voltage up to 21.5 volts X 1.414 = 30.4 volts DC

This will work with any transformer that you can feed a wire around the core

-----Original Message-----
From: Fred Smith [mailto:imserv@...]
Sent: 20 February 2005 18:17
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: looking for a 20vac transformer resource

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Monte" <montejw@e...> wrote:
>
> I have a power supply that outputs 36vdc (24vac transformers)and I
> want to get down to 30vdc. A 20v transformer would get me 28vdc,
if I
> have the math right, which is close enough. Where can I get one
(or
> 2) of these. I want to drive the 4 axis Xylotex driver board and
some
> 250 oz in steppers on my Taig mill.

Monte,

IMService stocks a toroid transformer, 120/20, and also a power
supply kit with additional components to create a linear supply.
These are all new current production components that we use in our
own systems and kits.

http://www.cadcamcadcam.com/index.asp?PageAction=VIEWCATS&Category=5

bottom of the page

Fred Smith - IMService
http://www.cadcamcadcam.com/hobby





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