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Forums
4hv.org :: Forums :: Tesla Coils
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Secondary Frequency

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Michael W.
Tue Feb 14 2006, 02:57AM Print
Michael W. Registered Member #50 Joined: Thu Feb 09 2006, 04:07AM
Location: Vernon, B.C, Canada
Posts: 324
I used WinTesla and Tesla Coil Cad and it tells me my Secondary Frequency is 2938.27 KHz! Doesn't this seem alot?
1139885834 50 FT0 Secondarycoilresonance
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HV Enthusiast
Tue Feb 14 2006, 03:14AM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
No. Not for the specifications for your coil. Seems just about right.

If you want a lower fres, use a much smaller gauge wire.

24 AWG is HUGE for the size coil you are running. Even my largest tesla coils don't even use wire that size. The largest i've
used for a standard secondary is 26 AWG.

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...
Tue Feb 14 2006, 03:16AM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
for a secondary that small I think that is a very reasonable estimate. I would recommend making it a little wider (like 2.7" or so), which will lower the Fres and also get you a better (in my opinion) looking secondary. It also fits the 4:1 height to width ratio generally accepted to be the best for Tesla coils...
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Michael W.
Tue Feb 14 2006, 03:30AM
Michael W. Registered Member #50 Joined: Thu Feb 09 2006, 04:07AM
Location: Vernon, B.C, Canada
Posts: 324
Is my coil going to function at this frequency? and If so with so/so results?
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Dr. Shark
Tue Feb 14 2006, 09:15AM
Dr. Shark Registered Member #75 Joined: Thu Feb 09 2006, 09:30AM
Location: Montana, USA
Posts: 711
If you run it in a SGTC it will probably work, but not generate terribly high voltages as the stepup seems to depend on the inductance ratio of primary and secondary. Running it in a SSTC would be very hard, so I would not recommend that.
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HV Enthusiast
Tue Feb 14 2006, 12:43PM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
ForceLabs wrote ...

Is my coil going to function at this frequency? and If so with so/so results?

Forcelabs,

When you ask a question, please be sure to provide as much information about your system as required for your question to be answered. Please remember that other members are going to take the time out of their schedules to address your question, so its only common courtesy to ask your question providing as much detail as possible.

Simply putting specs out for a secondary coil, and then saying will it work, doesn't help.
Remember the rules - do your homework first (which means spend the time to post all specs about your proposed system)

Thanks
Dan

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Michael W.
Tue Feb 14 2006, 03:31PM
Michael W. Registered Member #50 Joined: Thu Feb 09 2006, 04:07AM
Location: Vernon, B.C, Canada
Posts: 324
Sorry, I just sort of freaked out at the results that the generator gave me, and made me question whether my coil was going to work or not....
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HV Enthusiast
Tue Feb 14 2006, 03:46PM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
So what kind of coil *are* you building? SGTC, SSTC, DRSSTC, VTTC????

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Michael W.
Wed Feb 15 2006, 02:36AM
Michael W. Registered Member #50 Joined: Thu Feb 09 2006, 04:07AM
Location: Vernon, B.C, Canada
Posts: 324
A spark gap tesla coil, with 10,000 volt supply.
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...
Wed Feb 15 2006, 03:10AM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
In that case it will work, but it would be better if you would it with like 30awg wire... A do have a feeling that at 3mhz the output sparks are not as flowing as with a lower frequency, they will be more like corona....
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