Re: X-RAYS

Yup, I agree, it really is not much of a concern to me, however the one
thing to remember is that the front of the tube has the heavy leaded glass
face, not the bell (at least I don't think it does). As I recall there
were warning to TV techs years ago about the risk of X-rays bouncing from
the rear of the tube...I seem to recall talk of technicians getting arm
cancer from laying their arm across the rear of the tubes while they did
the convergence in factories. Took a lot of tubes though to be a problem.
This might be an urban legend in techie land...

I think we are all quite safe, though it never hurts to check the HV on a
tube before sending it out to the general public...especially on after
market HV kits, HV hacks, etc.

John :-#)#

At 11:58 AM 26/05/2003 -0500, Rodger Boots wrote:

>CRTs produce Xrays. BUT CRTs are made from leaded glass to absorb those
>Xrays to an "acceptable" level.
>
>It's all simple enough, don't apply more than the maximum high voltage
>specified for a given CRT. Finding out what that maximum is, though,
>seems to be the problem. I'd say grab a tube manual and look it up, but
>tube manuals seem a little hard to find these days. And most of the ones
>sold on eBay are either too old or are reprints of manuals that are too
>old to have the CRTs we use in them.
>
>Which brings us back to the numbers given by the monitor manufacturers. So
>let's use their maximums as a guide.
>
>
>John Robertson wrote:
>
>>More digging shows that some X-Rays can be emitted from as little as
>>14.2KV (0.10nm):
>>
>>http://web.unbc.ca/~hussein/Phys_101_Winter_2002/Phys_101_Ch27.pdf
>>
>>And a better representation of the other article I posted previously:
>>
>>http://www.belljar.net/xray.htm
>>
>>Hmmmmm....
>>
>>John :-#(#
>>
>>
>>
>>
>>>At 03:04 AM 23/05/2003 -0500, Rodger Boots wrote:
>>>
>>>>Only if you watch the TV from 2 feet away. Double the distance and get
>>>>1/4 the dose.
>>>>
>>>>True enough though, an arcade monitor would smoke the flyback before
>>>>the high voltage would get high enough to be a problem.
>>>>
>>>>
>>>>mccullar wrote:
>>>>
>>>>>You've got far more to worry about from your TV set than from your video
>>>>>games. It's on far more often. :)
>
>
>
>
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Received on Mon May 26 11:04:52 2003