wrote in message
ups.com...
On 13 Mar, 23:37, "powerdoc" wrote:
I have a CS-117 with a defunct transformer. The factory won't sell me
parts and the value of the unit will be exceeded by the repair costs.
Is there a way to estimate the value of the ac output (it looks like a
center - tapped output with 3 wires) so I can get this back on the
road?

For a preamp, look at hte electrolytics. Also look at the volt reg,
both voltage and type, if it uses one.


NT


Agreed. Take around 70% of the rating of the main filter electro(s) that
follow immediately after the rectifier, and then take again about 70% of
that figure to arrive at the AC RMS winding voltage. So, if caps rated at
say 40v, reckon on the DC that's normally across them to be around 28 - 30v,
and the RMS output voltage of the tranny to be around 20v.

Arfa