Results 4
After getting a bit fed up with smalltime results, I decided to rebuild my power supply section.
I am now running the plate and grid2 from seperate, variac controlled microwave oven transformers, both running standard level shifter setups.
This means that I have got much more than enough power to seriously thrash this thing !
I can now set the plate voltage at 2000v and then vary the output by turning the grid2 supply from 0 - 600v. The setup now looks like this...
The results speak for themselves! It now spits out 220mm streamers which look like daggers and hums like a substation !
I have a bit more work to do yet but it's getting there.
Above is a scope picture of the emmitted field around the coil with it running at near cut-off with no visible output. The signal was picked up with a 200mm antenna about 1 meter away from the coil as i don't like getting the scope too near it.
This picture was taken using the same setup but with the coil emitting a 50mm discharge.