Author Topic: Upper and lower pole working  (Read 343 times)

Offline pentode

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Upper and lower pole working
« on: March 04, 2019, 08:24:45 AM »
Sorry to be dumb, but could someone please explain the difference between
these two methods of working?
Thanks.
"One small step for man"...
…..because he has Arthritis.
www.retinascope.co.uk

Offline Uspring

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Re: Upper and lower pole working
« Reply #1 on: March 04, 2019, 02:35:45 PM »
When you have 2 tanks, like in a DRSSTC, the system will have 2 resonance frequencies. If the tanks are uncoupled, they will just be the primary and secondary resonances. When they are coupled, the system will also have 2 resonance frequencies, but they will be shifted away from the original resonances. These 2 new frequencies usually are called poles. The lower pole lies below the two original frequencies and the upper pole above them. Here's a bit about how they affect the performance of a TC:

https://highvoltageforum.net/index.php?topic=78.msg624#msg624

Offline pentode

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Re: Upper and lower pole working
« Reply #2 on: March 04, 2019, 02:55:34 PM »
Thanks Uspring.  That's got me a little further up
my learning curve.   :)
"One small step for man"...
…..because he has Arthritis.
www.retinascope.co.uk

Offline Teravolt

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Re: Upper and lower pole working
« Reply #3 on: March 04, 2019, 04:28:53 PM »
look up resonant transformer frequency splitting. depending on your coupling the amount of frequency splitting will be more or less greater. if you have accsess to a signal generator with or with out sweep capabilities and a o-scope you can see this first hand.

Offline VNTC

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Re: Upper and lower pole working
« Reply #4 on: April 13, 2019, 02:49:41 AM »
Exiting topic!
Thanks so much Uspring.  That's got me a much further up my learning curve.
When run orcad simulation I saw this thing but not yet understand clearely.
High class Tesla coil player “ Steve ; Gao. .”  for example, they wrote their project very detail, but I think their document missing an importance information : final frequency of the coils running at low power out and max. power out.
Because when analyzed DRSSTC1; . .  DRSSTC3 in Gao web page i want to know these information, but i can not.

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Re: Upper and lower pole working
« Reply #4 on: April 13, 2019, 02:49:41 AM »

 


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