CRT Caps (was Re: Tube coil capacitors)

• To: tesla-at-pupman-dot-com
• Subject: CRT Caps (was Re: Tube coil capacitors)
• From: "Reinhard Walter Buchner" <rw.buchner-at-verbund-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
• Date: Fri, 19 Feb 1999 14:55:22 -0700
• Approved: twf-at-verinet-dot-com

Hello Bert, Bob, all,


>Original Poster: "bert" <bertpool-at-ticnet-dot-com>
>
>Bob,
>CRT's have an inner and outer conductive coating (aquadag) with thick
glass
>in-between, forming a good glass capacitor.  Since the electron gun is
not
>powered, and no electrons are being accelerated in a vacuum, no X-rays
are
>possible.  A capacitor, nothing more or less.  The only hazard is a
possible
>implosion should the glass fail due to a hv puncture.


<SNIP>

The last safety hazard you mention can be eliminated
by carefully snipping off the vacuum stud on the CRT.
In the event one should drop the cap or the hv punctures it,
the only "bad" thing possible is a load of glass splinters, but
not an implosion. The "airing" of the CRT will also prevent
ANY X-rays from forming, although the possibility (as you
have pointed out) is zilch anyway. The real disadvantage I
see is the physical vs. capacitance size. On the other
hand, if you have the space and you´re in a pinch.............



Coiler greets from germany,
Reinhard

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