Hi Chris,
>More is better here. For level shifter. As long as you meet voltage
requirement, which you do...
Cool!
>This is necessary to protect the level shifter diode and protect the HV
plate transformer/MOT
>This is necessary again to protect the filament transformer.
I probably should have known this 0:D
http://www.classictesla.com/hot-streamer/TeslaCoils/MyPapers/primarycircuits/pricir.html
>That said, this is a "tougher tube" graphite plate which also can handle a
little bit more current also.
Yes! My old 811 tubes automatically installed cooling vents into themselves... :D
https://imgbox.com/fcXdFZn8https://imgbox.com/38W9hwbj
>On your paper, you mention C6 which is also parallel with R1 in the grid
leak section. You say this is a RF blocking capacitor on your paper
grouped with C4 &5. It is actually charging up here and the parallel
resistor is controlling the "leak down rate".
>So C6 is not a blocking capacitor here. In conjunction with R1 it switches
the tube "on & off" at the right time to control the plate current pulses
to the "tank".
I think I see now. This allows the Grid to oscillate while still keeping it under control. I never understood this part at all before.
I bought this coil like 20 years ago on Ebay and it has always worked very well. But I really don't know how it works so I thought I would fix it up and figure it out now.
I actually have a computer simulation of it going now.
https://imgbox.com/19reUp6Bhttps://imgbox.com/mRmL1tAchttps://imgbox.com/DnSz3SL3
It's very preliminary but it sort of runs and allows me to fiddle with things while I learn. After messing with the model I refined the values and it should actually be running at 407kHz.
Antonio's INCA program was super useful!
https://imgbox.com/pSGmaRZGhttp://www.coe.ufrj.br/~acmq/programs/
I got the secondary measurements all wrong since it was installed in the coil and very hard to measure in place. It is actually 800 turns of #27 wire and the INCA program found this error right away!
So I think I am off to a good start figuring this coil out. :)
Thanks so much for your help!
Best Regards,
Terry
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla