[Test-Equipment] SOLA CV Transformer

[Patrick Thompson]

I don't have any information to share but a search showed up a transformer
at vivatubes for a whopping $250.

I'm assuming the vtvm has sentimental or historic value.

I think I would leave the CV transformer in place just for show and replace
its function with solid state regulators.

Pat

On Thu, Apr 15, 2021, 8:55 AM Barry <n4buq at knology.net> wrote:

> I should have mentioned that the model number for the SOLA is 30488.  It
> is designated as having 115V input and 6V output.
>
> Thanks,
> Barry - N4BUQ
>
> ----- Original Message -----
> > From: "Barry" <n4buq at knology.net>
> > To: "Discussion of Electronic Test Equipment" <
> test-equipment at mailman.qth.net>
> > Sent: Thursday, April 15, 2021 7:17:43 AM
> > Subject: [Test-Equipment] SOLA CV Transformer
> >
> > Hi folks,
> >
> > Anyone here familiar with older SOLA Constant Voltage transformers?  I
> have
> > one from a VTVM that was manufactured in the late 1950s and it is failing
> > after warming up.  I presume that resonance capacitor is going bad -
> perhaps
> > exacerbated with heat.
> >
> > I opened the unit up and it has a significant amount of tar(?) poured
> > in/around the transformer.  The cap is somewhat in a better position to
> be
> > replaced and I think I can dig enough of the goo out from around it to
> get
> > it out so this might not be too bad of an operation but I thought I'd ask
> > for any advice from the group as to how I might go about this.
> >
> > Furthermore, if I can get it out, I'm thinking it might not be marked
> and, if
> > so, I don't know what value capacitor should go back in there so looking
> for
> > advice on that as well.
> >
> > Thanks,
> > Barry - N4BUQ
> >
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