 Simple DR?SSTC
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Dr. Dark Current
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Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
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Goldsphere wrote ...
No, a DRSSTC has two resonant circuits. ie an inductor and capacitance in the tank circuit.
A SSTC just drives the the primary at the resonant frequency, whereas a DRSSTC has the tank
oscillating at a frequency and the IGBTs acting as the spark gap and firing at a presettable BPS.
What you are describing is an OLTC (off line tesla coil). In DRSSTC the FETs still switch at the resonant frequency.
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Mates
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Registered Member #1025
Joined: Sun Sept 23 2007, 07:53PM
Location: Czech Rep.
Posts: 566
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Yesteday I tried to pull a plasma from the top load and during this process both transistors died  (WHY?!) It looks the design is too simple and after this painfull double death I can not recommend the construction based on the scheme I posted. My problem is I'm not in my country and it is PITA to get parts for making a proper DRSSTC. Also my old 30Kg two channel russian osciloscope is at home which means 1200 Km - that's why I'm trying this crazy approaches.
Now I have only one last IGBT which I need for my MARX HV supply so that means enough of TC-fun for some time.
BTW my Marx will be soon in the project section - I made some interesting HV underwatter experiments I need to discuss.
Cheers
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