So I took some advice and removed the rectifiers which ofcourse was an oily
disaster. I stripped out everything I didn't think I needed being tge two
rectifier boards and the fillement step down so all that's left is the 2
center tapped transformers and two capacitor banks one for each transformer
each containing 10-8,000 vdc caps in them. Now the transformer hums like a
bugger but I'm getting almost no anything definitely no spark from them.
But what baffled me was that there were two high voltage leads coming from
each transformer! But I also noticed that from the rectifiers there was
also two points that went to the capacitor bank then one from there to the
outlet. Should both of them be tied together and go into the same end of
the mmc then at the other end just have the single line to the outlet? Or
could I have just connected each opposite each other going to there
respective capacitor banks putting it out of phaze and crossing each other
out? Thanks in advance for the help
On Tue, Feb 23, 2021, 11:03 AM Lux, Jim <jim@xxxxxxxxxxxxx> wrote:
> On 2/23/21 7:12 AM, Adam James wrote:
> > Adam Here, None of my business, But perhaps a concern.
> > Before building my first TC I read all about capacitors and watched a few
> > videos on overcharged capacitors and how they can fail rather
> dramatically!
> > On curts setup, with the bucket Capacitor and an 80k to 100k sustained
> > charge would it be possible for that thing to go "boom"?
> > AJ
>
> The failure mode on bucket caps is cracking of the glass, or arcing over
> (then cracking the glass). They really don't store enough energy to be
> more "exciting" than that. The usual failure is from dielectric heating
> aggravated by localized heating from corona. The glass is a pretty
> lossy dielectric (same problem with large glass plate capacitors that
> were popular in the 1950s and 1960s) - as it gets hot, the loss goes up
> (pretty quickly - after all molten glass is a good conductor) - the
> hotter spots get lossier, which gets them hotter, until the thermal
> stress cracks them. Once a crack starts to form, then the problem gets
> even worse.
>
> Bucket caps are also notorious for corona discharge, even at NST
> voltages (20kV)
>
>
> Fortunately, failures usually just result in a bucket full of broken
> glass, salt water, oil and aluminum foil. And maybe a small fire, if
> you're unlucky.
>
>
>
>
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