[time-nuts] Noisy Sulzer 2.5 - Suggestions?

paul swed paulswedb at gmail.com
Thu Aug 18 16:47:19 EDT 2016

I know those capacitors and you are right they were very high quality way
back when. Really interesting on the whiskers. I have seen them on other
What is it the tin leaching out. I guess the funny thing was that I have
seen them before and just brushed them off and continued troubleshooting.

On Thu, Aug 18, 2016 at 2:46 PM, Chuck Harris <cfharris at erols.com> wrote:

> Hi Ed,
> Nope.  I just brushed off the growth, and blew the whole
> assembly down with compressed air.  The whiskers were
> huge!  I think they were capacitively coupling with the
> ground bits, and since their size and number varied in
> an uncontrolled way, they affected the frequency in an
> unstable way.
> These white cube shaped capacitors are something high
> quality.  The white color is a porcelain glaze that protects
> the capacitor, and the wires seemed to be connected to
> some sort of sintered silver area on the body.
> -Chuck Harris
> Ed Palmer wrote:
> > That's not something I would have expected.  Did you have to unsolder
> the capacitors
> > to clean them up?
> >
> > Ed
> >
> > On 2016-08-18 10:00 AM, time-nuts-request at febo.com wrote:
> >> My old 2.5A was acting up in strange drifty ways.  I opened the oven,
> and found
> >> that all of the white cube shaped ceramic capacitors in the oscillator
> were covered
> >> with fuzz on the electrode ends.  I am guessing that they were growing
> a great
> >> tin whisker beard.  I cleaned it all off, and performance improved
> greatly.
> >>
> >> -Chuck Harris
> >>
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