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Hi - Chris, Thanks. In the video the spark was attaching at about 15-16
inches. I believe a finer and finer level of tuning of the grid circuit
and tank frequency may yield better efficiency. The Variac is wired for
140V and I'm turning it up to about 70%. Pegging the meter? :) it's just
a meter but 2100V and 300ma is getting close to the limit of the tube
and before I go for the gusto and turn it up more I should make sure the
tuning is as good as it can get.
Dave
On 2/2/2018 3:33 AM, Chris Reeland wrote:
Hi Dave,
I see your coil is performing much better now. Your coil also looks even
nicer now with the changes of some components. It was nice before but now
really good looking. What is your current spark length now at I think you
said 2100V @300ma ? Just curious also, what approximate percentage or
voltage on the variac plate for the input variac voltage are you at? Said
you had more, but limited by plate current pegging. Just wondering. Also is
it a 0-120V or a
0-140V variac?
Again, looks great.
Chris
Sent from my LG V20
On Feb 1, 2018 12:58 PM, "David" <zipo@xxxxxxxxxxx> wrote:
Hi Everyone - I finally got around to making a video of my 810 tube coil
today and wanted to post a link to the YouTube vid
https://www.youtube.com/watch?v=3CUR37HHQX0&feature=youtu.be
Thanks
Dave
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