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4hv.org :: Forums :: Tesla Coils
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Better method to tune

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Gregory
Wed Feb 09 2011, 07:55PM Print
Gregory Registered Member #2922 Joined: Sun Jun 13 2010, 12:08AM
Location:
Posts: 226
Hello! I'm make two big DRSSTCs, one with cm300 and another with ixys 60n60.. But i have questions about tune..
What is the best method?

- Use a low voltage on the bridge, like 50V and scope the primary current?
or
- Use total power and put the OCD to a low value, like 100A..

Can you show me pics of current envelopes in primary circuit? of a good tune and a bad tune?

Thanks!
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william L
Thu Feb 10 2011, 02:49AM
william L Registered Member #3093 Joined: Mon Aug 09 2010, 11:40PM
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Posts: 68
Do you have a signal generator and oscilloscope? You don't necessarily need to run the coil to tune it. Trying to scope 100A seems rather impractical to me...
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Gregory
Thu Feb 10 2011, 04:49AM
Gregory Registered Member #2922 Joined: Sun Jun 13 2010, 12:08AM
Location:
Posts: 226
I have the signal generator and oscilloscope, will try with the normal method.. I have been had good results putting a wire on the top load to the air, like a spark, simulating the capacitive load of the spark that detune the secondary. With my small DRSSTC this method work good. Is only put a wire in topoload to air with expected spark length when measure the secondary frequency.
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