It's interesting Amie regarding your magnetisation. It did make me wonder about Trevor's variation in results with similar valves. As far as I remember when I experimented I didn't get anything like that. The field had minimal, but noticeable effects but was not predicatable. I think it was a 1j37b and would have been in a circuit of HT 60V. Thinking further on this, and the fact that they are beam devices, two things come to mind. The first is that the magnetic field orientation will likely have varying effect dependant on orientation (unlike a traditional valve in which the electron flow is radial). The second is the actual dimensions. The electron path is very short so a large magnet external to the valve will likely have little fine control, just having a swamping effect at high field, as you have found. To me it is really thinking like a CRT in miniature. On a normal CRT the beamlength is very long. In these it is of microscopic proportions so any field would have to be focused to an extent difficult except in a laboratory.
Another point I wonder about is, if any magnetic field is strong enough to affect the beam, if the parts are magnetic would a high enough field warp the elements? The things were (so it has been said) immune to an electromagnetic pulse. Maybe what we are coming across goes against that? I will finish now as I am perhaps going too far lol.
Tracy
Another point I wonder about is, if any magnetic field is strong enough to affect the beam, if the parts are magnetic would a high enough field warp the elements? The things were (so it has been said) immune to an electromagnetic pulse. Maybe what we are coming across goes against that? I will finish now as I am perhaps going too far lol.
Tracy
