Bifilar choke windings vs tube length ratio

[professor]

Try that I will be using those figures myself.   http://jnaudin.free.fr/wfc/index.htm

[Hillio]

Try that I will be using those figures myself.   http://jnaudin.free.fr/wfc/index.htm

Thanks for the link.  It looks like JLN used a cardboard tube for his inductors.  Judging by those waveforms, it must be working pretty well.

[professor]

Hi
I bought some High Voltage Phenolic Tubing  from Redwood Plastics or you can buy UHMW Tubing for one third of the price .
There is also a small program that we all should have called Mini Ring Core Calculator  the Link for it was posted somewhere else.
It saves you all the math and calc.
http://www.dl5swb.de/html/mini_ring_core_calculator.htm
Professor

Thanks for the link.  It looks like JLN used a cardboard tube for his inductors.  Judging by those waveforms, it must be working pretty well.

[professor]

Hi
I bought some High Voltage Phenolic Tubing  from Redwood Plastics or you can buy UHMW Tubing for one third of the price .
There is also a small program that we all should have called Mini Ring Core Calculator  the Link for it was posted somewhere else.
It saves you all the math and calc.
http://www.dl5swb.de/html/mini_ring_core_calculator.htm
Professor

Thanks for the link.  It looks like JLN used a cardboard tube for his inductors.  Judging by those waveforms, it must be working pretty well.

[malcolm]

Hi, Hillio... if you haven't found the cap calc, try this.