John Robertson wrote:



An interesting paper on 6BK4 tubes being driven (60KV) to give off
X-Rays, but it appears they would also generate X-Rays at voltages found
in colour TVs:

http://www.belljar.net/xray.htm

Later 6KB4 tubes had leaded glass it seems.

Well, that is enough time spent on X-Ray production for now. sure looks
like under 1KV is quite safe, and over 20KV it gets interesting.



** Monochrome CRTs and monitors operated with HT voltages in the range of 16 to 20kV and were made with plain glass while colour CRTs operated at voltages about 5 or 6kV higher and were made with thick leaded glass at the face.

The reason was X-ray generation.

However, seeing small kids sitting less than a metre from colour CRT screens always made me cringe.



..... Phil