Re: Uses for old TVs?

In <5c701d4d-285c-4f68-a7bd-(E-Mail Removed)>,
Too_Many_Tools wrote:

>On Jun 23, 12:16*pm, Jan Panteltje <pNaonStpealm...@yahoo.com> wrote:

<I snip to here>

>> particle=electron
>> accelerator=CRT
>> brain=absent?
>
>LOL.
>
>Some of us would like to accelerate more than just electrons.
>
>Again any links to where someone has modified a CRT to be a general
>purpose accelerator?
>
>Also any thoughts as to how one might be able to use an old television
>for a Xray machine?

Many mostly-tube and partially-tube color TVs have a high voltage shunt
regulator circuit using the 6BK4A "beam triode", a high voltage triode.

The 6BK4A appears to me easy to abuse for producing X-rays. In fact, if
used in normal use, it is normally enclosed in a "thickish sheet steel"
"high voltage cage" whose main purpose is to absorb much of the X-rays
normally produced by this tube. (And secondarily by the often-associated
3A3 or 3AT2 high voltage rectifier tube, occaisionally the 1G3GT/1B3GT
that was more common in B&W sets which had lower high voltage. Many B&W
sets used the 1K3 as a high voltage rectifier. I have seen B&W sets with
a tube rectifier and no "high voltage cage", though never a B&W set with a
tube shunt regulator.)

I seem to think that with a bit of extra negative gate voltage, the
6BK4A can take plate voltages around 40 or 50 KV.
(Warranty: I refund what I got paid to post this if your 6BK4A fails or
causes damage from excessive plate voltage up to 50KV without exceeding
any ratings other than plate voltage, and that is my liability limit here.)
(Over-volt a 6BK4A or the like at your own risk to life/limb of yourself
or others and pets/livestock, or property damage, etc., from the 6BK4A or
any associated tubes successfully producing X-rays, or from the 6BK4A or
anything used with it or to over-volt it going zappo-zowie, blammo,
kablooey, producing fire or noxious smoke or ultraviolet or nitrogen
oxides or ozone, etc.)

- Don Klipstein ((E-Mail Removed))

On Wed, 24 Jun 2009 00:39:15 +0000 (UTC), (E-Mail Removed) (Don
Klipstein) wrote:

>In <5c701d4d-285c-4f68-a7bd-(E-Mail Removed)>,
>Too_Many_Tools wrote:
>
>>On Jun 23, 12:16*pm, Jan Panteltje <pNaonStpealm...@yahoo.com> wrote:
>
><I snip to here>
>
>>> particle=electron
>>> accelerator=CRT
>>> brain=absent?
>>
>>LOL.
>>
>>Some of us would like to accelerate more than just electrons.
>>
>>Again any links to where someone has modified a CRT to be a general
>>purpose accelerator?
>>
>>Also any thoughts as to how one might be able to use an old television
>>for a Xray machine?
>
> Many mostly-tube and partially-tube color TVs have a high voltage shunt
>regulator circuit using the 6BK4A "beam triode", a high voltage triode.
>
> The 6BK4A appears to me easy to abuse for producing X-rays. In fact, if
>used in normal use, it is normally enclosed in a "thickish sheet steel"
>"high voltage cage" whose main purpose is to absorb much of the X-rays
>normally produced by this tube. (And secondarily by the often-associated
>3A3 or 3AT2 high voltage rectifier tube, occaisionally the 1G3GT/1B3GT
>that was more common in B&W sets which had lower high voltage. Many B&W
>sets used the 1K3 as a high voltage rectifier. I have seen B&W sets with
>a tube rectifier and no "high voltage cage", though never a B&W set with a
>tube shunt regulator.)
>
> I seem to think that with a bit of extra negative gate voltage, the
>6BK4A can take plate voltages around 40 or 50 KV.
> (Warranty: I refund what I got paid to post this if your 6BK4A fails or
>causes damage from excessive plate voltage up to 50KV without exceeding
>any ratings other than plate voltage, and that is my liability limit here.)
> (Over-volt a 6BK4A or the like at your own risk to life/limb of yourself
>or others and pets/livestock, or property damage, etc., from the 6BK4A or
>any associated tubes successfully producing X-rays, or from the 6BK4A or
>anything used with it or to over-volt it going zappo-zowie, blammo,
>kablooey, producing fire or noxious smoke or ultraviolet or nitrogen
>oxides or ozone, etc.)
>
> - Don Klipstein ((E-Mail Removed))


Much better off finding an actual preferred medium like Palladium or
such.