Ferroresonant transformer supply repair

[Mattis Lind]

måndag 9 september 2019 skrev Kyle Owen via cctalk <cctalk at classiccmp.org>:

> On Sun, Sep 8, 2019, 20:39 Guy Dunphy via cctalk <cctalk at classiccmp.org>
> wrote:
>
> > >
> > >We recently replaced the ferroresonant capacitor in a power supply on
> the
> > CHM's
> > >PDP-1. They do fail (thankfully, not often) - and they are not
> > super-critical
> > >as to value. If the one you're replacing has the same marked value, you
> > should
> > >be fine.
> > >
> >
> > Yes, that's right. Find something with the same marked capacitance value.
> > The rated voltage can be the same or higher.
> >
>
> I can't seem to find motor caps that meet the voltage spec of 660V. 8uF
> doesn't seem like a problem, but the combination together isn't looking
> good. Are there any specific vendors I should be looking at? My usual
> suspect of DigiKey isn't looking good.


Mouser has CDE 8 uF 660 VAC. 11 are on order from the manufacturer.


https://www.mouser.se/ProductDetail/Cornell-Dubilier-CDE/SFA66T8K475B-F?qs=sGAEpiMZZMu3dWSqd4Tl0A9wIZdhZWWRKQi0fpV8QTUDmNGSFUtTTQ%3D%3D

I have replaced several  of these capacitors in  PDP-8, LA30, PDP-9.

/Mattis


> Thanks!
>
> Kyle
>
> >
>