[BC] Where old TVs go...

[George Nicholas]

When we were kids in the late 60's, we found you could take an average
pellet gun and splatter a pellet if you fired directly at the CRT.  When we
put them "stem up," it made quite a sight when the tube imploded.

As to old TV's, as a kid, that was our source of experimenter parts!
Remember "Qwirks in a drawer"?
gn
----- Original Message ----- 
From: "Phil Alexander" <dynotherm at earthlink.net>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Cc: "David Reaves" <david at translantech.com>
Sent: Tuesday, July 05, 2005 3:48 PM
Subject: Re: Re: [BC] Where old TVs go...


>
> On 5 Jul 2005 at 18:51, David Reaves wrote:
>
> > How dangerous could it be to break a TV tube? Even a full vaccuum is
> > only minus one atmosphere (14Lb./sq. in.)
> >
> >   Not that I'm against experimenting, though. I'd be more worried
> > about the stored HV.
> > :-)
>
> A 27" set is roughly 16 x 20 or 320 sq. in. at 14.5 psi, or over
> 4600 lbs. force on the CRT face. Accelerating a 1 pound chunk of
> glass with that energy gives you a chunk of glass moving with a
> "muzzle" velocity that is very significant. It could blow a hole
> through you with ease. Demands as much respect as a small cannon.
>
> In most the aquadag area on the outside of the tube was scaled
> down to a small area to limit the amount of HV charge. Usually,
> the doorknob in the HV section had more Joules stored, but
> clipping a lead from the HV terminal to the chassis is still a
> very good idea. <g>
>
>
> Phil Alexander, CSRE, AMD
> Broadcast Engineering Services and Technology
> (a Div. of Advanced Parts Corporation)
> Ph. (317) 335-2065   FAX (317) 335-9037
>
>
>
>
>
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