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From few weeks i'm planning to build a DRSSTC. Is the fist time for me around Solid State. i had build a lot of classic Spark Gap TC and Vacuum Tubes TC, using from little PL519 tube, to Big GU81M!
i decided to walk through the Solid State Universe after have watching some interesting videos on YouTube. it's incredible the capabilities of SSTC compared to an Classical spark gap Tesla!
So, i started to browse some website and acquires all the info that i need. At this time this is the state of the project:
Studying over and realization of Steve Ward UD (Eric Goodchild 2.5 Relase)
(tested and run Great!!)
Interrupter, classical BPS-PW and Burst Mode (Custom PCB)
(Tested, soon with Tosling Optic Fiber Transmitter!)
OCD and FB-CT 1:1000
(soon Gate Transf. and measure Transf.)
2X 6000uF 400V Capacitor
2 different type of large IGBT, Semitrans SKM300GB12T4 and 403GB128D
( i'm planing to use the first ones, but i accept suggestion!)
I have also 25AWG (0.45mm) wire for the secondary, i calculated winding for obtain about 40Khz Toploaded!
it's all for the moment! thanks for comprehension for my bad english and i accept all critics or suggestions!
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Very nice work! Thanks for sharing the photos. I love seeing what others are doing in the DRSSTC world on the other side of the pond! Keep up the good work!
Registered Member #7267
Joined: Tue Oct 16 2012, 12:16AM
Location: Detroit, Michigan
Posts: 407
Cool! Everything looks good. No inductor on the UD, so you are not going to be using phase lead? (or was that just for testing purposes?) Just make sure to keep all your BUS and bridge connections tight and short to maintain lowest possible inductance.
Mind if I ask, what are the dimensions going to be for your secondary and topload?
Yes, i planing to use Phase Lead but i have some problem to find variable inductors in Italy at the moment. but i will use it! actually just for testing purposes!!
Yes, short connection for lowest BUS inductance!! short as i can! For this reason i think to use SKM300GB12T4, its seems to be easier for short connection. and a little more fast and powerfull!!
I'm here for have suggestion and help, so.....sure.... i planing to use 250mm Diameter and 1000mm Eight using 0,45mm (25AWG) wire. My software say:
- 70,90khz of resonant f. - 42,97khz of quarter wavelength - 31,78pF Toroid capacitance required
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
JoeBonanno wrote ...
Yes, i planing to use Phase Lead but i have some problem to find variable inductors in Italy at the moment. but i will use it! actually just for testing purposes!!
Yes, short connection for lowest BUS inductance!! short as i can! For this reason i think to use SKM300GB12T4, its seems to be easier for short connection. and a little more fast and powerfull!!
I'm here for have suggestion and help, so.....sure.... i planing to use 250mm Diameter and 1000mm Eight using 0,45mm (25AWG) wire. My software say:
- 70,90khz of resonant f. - 42,97khz of quarter wavelength - 31,78pF Toroid capacitance required
its correct?
If you're willing to pay just the postage, i'll send you some variable inductors.
@Physics Junkie: very cool website, full of information and guideline! i usually use "Tesla Coil CAD" and "Tesla Map" (Google helps!!)
but,actually i have a doubt! i have bought 0,45mm wire double isolation and the final spessore is 0,50mm. Making calculation i have to consider 0,05mm of turns spacing, right?? final Freq. can change!!
And, how can i calculate the dimension and capacitance of this kind of toroid? Toroid
i have to consider it like a single solid toroid (classical way) or multi mini toroid parallel?
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
wrote ...
Really "EasternVoltageResearch" ?? thanks!!!
how can i send you the necessary money?
Just contact me via PM and send me your mailing address. If the shipping is under a few bucks, don't worry a bout it. I'll send you the inductors and some free stickers.
Registered Member #7267
Joined: Tue Oct 16 2012, 12:16AM
Location: Detroit, Michigan
Posts: 407
JoeBonanno wrote ...
@Physics Junkie: very cool website, full of information and guideline! i usually use "Tesla Coil CAD" and "Tesla Map" (Google helps!!)
but,actually i have a doubt! i have bought 0,45mm wire double isolation and the final spessore is 0,50mm. Making calculation i have to consider 0,05mm of turns spacing, right?? final Freq. can change!!
And, how can i calculate the dimension and capacitance of this kind of toroid? Toroid
i have to consider it like a single solid toroid (classical way) or multi mini toroid parallel?
Thanks!
I would trust the TeslaCAD and Teslamap to be more accurate , JavaTC is another good one. I've always used 0 for the spacing between turns, but doing it your way might be more accurate. I find it to be negligable, only ever making a difference of one or two kHz. I know that JavaTC usually takes this into account anyways, showing spacing between turns to be something like 0.0008 inches. The best way to find your secondary +top load frequency is with an oscilloscope and function generator.
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DRSSTC project From Italy
