26 Oct
2011
26 Oct
'11
11:04 a.m.
On Tue, 25 Oct 2011 20:47:13 +0100 (BST), ard at p850ug1.demon.co.uk (Tony
Duell) wrote:
Heat is seriously ungood for CRT glass. It
reduces the dielectric
strength of the glass which can lead to arcing through the glass.
Prolonged arcing will hole the glass, thus venting the vacuum and
destroying the tube. Magnetic deflection yokes need to be designed not
to run too hot, the glass needs to stay well below 100 degrees C. Above
120 deg C the glass has not much dielectric strength left.
/Jonas
Given that
there are devices for easily breaking glass that are
> essentially sharp points, would a jab from a soldering iron be able to
> implode a CRT? I've done this by accident several times. Before anyone
Possibly. The soldering iron is hot which could set up thermal stresses i
nthe glass too. I do know that soldering to a socket contact while the
socket is plugged onto a CRT or valve can damage the glass-to-metal seal
around the pin, for esample, and is thus a bad idea. Thist doesn't
normally cause an implosion, but...