Author Topic: To Choke Or Not To Choke Part II  (Read 3176 times)

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Re: To Choke Or Not To Choke Part II
« Reply #8 on: April 06, 2010, 13:46:14 pm »
What is a "crowbar diode"? I did test with and without diodes. I did not notice much more than the diode adding a little resistance.

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Re: To Choke Or Not To Choke Part II
« Reply #9 on: April 06, 2010, 14:12:43 pm »
He's probably talking about Zener-Diodes, judging by the symbol of them.
They conduct at a specific voltage in both directions.

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Re: To Choke Or Not To Choke Part II
« Reply #10 on: April 06, 2010, 21:00:49 pm »
No. Its a normal diode.
The name crowbar is because of the place of it.

The diagram is as follows: + diode coil tubeset coil Fet ground.
The crowbar diode is placed like this:  a diode placed from the end of the second coil towards the input of the first coil.
Now tune in....

Steve

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Re: To Choke Or Not To Choke Part II
« Reply #11 on: April 19, 2010, 22:34:09 pm »
Hey bubs, ant results on your coil yet?
I just finished mine,
(http://img.photobucket.com/albums/v81/bigbuba/Picture4-4.png)

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Re: To Choke Or Not To Choke Part II
« Reply #12 on: April 20, 2010, 00:22:58 am »
Nice! I hate to say it, I have done nothing other than try to find a resonant frequency of which I cannot. Any other regular coil? Yes, but not this one. I am going to take your advice from earlier and increase the power input and see how much it will take before it gets hot. I figure if there is no resonant frequency of the coil, I should be able to use just about any frequency like 60-120Hz and it should not make much of a difference as far as the coil goes. I have to admit, I was taken back by my results and I'm having to rethink a bit.

I have acquired a small Bipolar Tesla Coil for high voltage research. It's maximum output is around 185Kv which easily will spark an eight inch or more gap. For the most part, I have been studying coronal discharge through the air with make shift plates and such. I bought a 100Kv diode for it too that I haven't even begun to test yet. It's a whole new world with high voltage for me and I am in the learning process still.

So what have you found out with your coil so far Donald? How do you make a split core stay together? Glue? I fricken dropped one of the core halves and broke the damned thing! Ugh! I tried to use it anyway and didn't see any differences with or without it with such low power. Keep me updated with your tests. I am so curious as to what you find in your results.

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Re: To Choke Or Not To Choke Part II
« Reply #13 on: April 20, 2010, 01:05:31 am »
Haven't hooked it up yet, still need some parts for the pulsing set up, but i might try hooking it up to just the bridge rectifier and see what it does on 120 hz dc...

the core came out of a fly back, i have a few of them and i used my smallest one, as the closest size to stans coil, the core has a metal clip on it that holds the two halves together. I have broken one or two before, trying to get them out of the fkybacks... sometimes they have glue or varnish on them that makes them hard to take apart

I just pick up one of my half-dozen 10,000 volt furnace ignition transformers, and i may build a jaccobs ladder, or tesla coil with it, and maybe see what it can do to a wfc, if anything at all...