Re: Harrison Lathe and Gecko's

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:

79.9 vdc when you take the 1.4Volt drop of the rectifier diodes. You
can also put some big diodes on a heatsink and loose an additional
0.7 V each...

Bernard
>
>
> James Owens wrote:
>
> >Hi Dave,
> >
> >As I have said in earlier posts, only the drivers are being feed
from this
> >large transformer @ 61v AC 20 amp and 19v AC 5amp. Both these
voltages then
> >go through rectifiers and some huge caps. While I thank you for
your reply,
> >you haven't answered the question or am I not reading it right.
> >
> >If I move the wire from the 415v tap to the 440v tap will the
smoke come out
> >or will it have the effect, I think, and reduce the output voltage
to a
> >level that makes it possible to used Gecko's.
> >
> >
> Yes, that will reduce the output voltage. This appears clearly
from
> your desciption to be
> a transformer-rectifier power supply, so there is no way this could
> cause damage to the
> power supply. But, 61 *(415 / 440) * 1.414 still equals 81 V,
which is
> high for the Gecko.
> If your line voltage is lower than 415, though, maybe that will
come out
> right. Do you get
> 61 VAC now from the transformer? Or is that the nominal rating on
it?
> What is the
> DC output you read from this supply?
>
> Jon