KV9200 Issues

[vol.2]

Originally Posted by Alex KL-1

You can use the lens effect and reduces Vg1, but you can need to compensate raising the Vg2 (screens), and also needs more video amplitude, if you wanto to maintain same contrast ratio. Perhaps a little loss of contrast can be compensated for taste sake with the sharper picture.

For me, for example, my delta-gun TV, I swears that it have more bright when it are critically focused. I not measured it, but I have a DMM with luximeter that I already measured some TV brightness, including that. Someday I measure it.

But I assume that being a side product (impression caused) of the focusing.

I think I want to tweak it and see how it effects things just for fun and as an experiment. I have lots of old TVs, so this is just fun for me, nothing too serious.

Would you mind confirming the tube neck pins for me?

It looks like the heater is 105V. That's very high compared to others I have worked on. At 105V pkpk that's something like 37V RMS? Seems very high for a heater, although maybe that's because it's a low voltage focus tube?

Seems like the G1 is 38.3V, the G2 is ~300V and the Focus is 0-500V?