Re: [CAD_CAM_EDM_DRO] Power supply

Mina, Hi

If the transformer is a toiroidal type you should easily be able to take
a few windings of the secondary. First try and count how many are there
- then work out the ratio of the number you need to remove. Remove about
50% of these (to be safe) then check the voltage again, repeat.

Don't forget to use a file on the free end up the copper wire before you
solder it - it's coated with a nonconductive layer which needs to be
removed to expose the bare copper. I had to do this for my Sherline as
I'd not accounted for the power-rise when buying the transformer.

If your xformer is the gool-old-fashioned (with metal frame and laminate
layers) type, it may be a bit trickier (and more dangerous), however.
Good luck!

Abby
(http://www.silverkatt.co.uk)

> Hi,
>
> I'm trying to rebuild the power supply that came with an old lathe,
> the Transformer is good I took 65 AC from the output fed it to a
> bridge to get the DC and then on to a Capacitor.
> The thing is the DC voltage after the bridge is stable at 65 VDC but
> after the Capacitor it grows up to 90 VDC which is too high for my
> Geckos 320.
>
> Any advise?
>
> Mina F.
>
> [Non-text portions of this message have been removed]
>
>

[Non-text portions of this message have been removed]