Re: [CAD_CAM_EDM_DRO] Re: Help putting together Power Supply

At 13:28 07/05/2003 +0000, you wrote:

>If you use the Xylotex driver, it maxes at 35 Volts so you can only
>use one x-frmr at 24.

Using a 24 volt xformer with a 35 volt max driver (as is the case with the
Xylotex) is pushing your luck just a touch. When rectified & smoothed you
will get 34V IF the mains supply is at the nominal value. However, you
don't leave much headroom either for the mains voltage to be over spec or
for the supply to go over 35 as a result of back EMF from the motor feeding
current back into the supply's caps. In the UK, for example, transformers
are often rated for a 220V supply, but our mains is 240V, so the smoothed
output from a 24V supply would be about 37V.

20V transformers are a better bet for use with these driver boards.


Regards,
Tony