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Coronafix

Wed Jul 08 2009, 04:39AM

Registered Member #160 Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938

Arcstarter wrote ...

And are those little film caps on your hat?

Lol! That's turquoise. Finn must have picked up that hat while in the U.S., the American Indians like to
work with it a lot.

Arcstarter

Wed Jul 08 2009, 06:25PM

Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253

Coronafix wrote ...

Arcstarter wrote ...

And are those little film caps on your hat?

Lol! That's turquoise. Finn must have picked up that hat while in the U.S., the American Indians like to
work with it a lot.

I definitely see now that i actually enlarge the pic 0_o.

Paul Benham

Thu Jul 23 2009, 12:47PM

Registered Member #570 Joined: Wed Mar 07 2007, 03:41PM
Location: Winchester Uk
Posts: 42

Hi Finn,

You have a reset IC on the 15V rail that shuts down the drive if the supply fails. I wondered what this IC was that you used?

Cheers,

Paul.

Edit - I now realise that what I thought to be a reset IC is the Optocoupler input.

Finn Hammer

Thu Jul 23 2009, 02:53PM

Registered Member #205 Joined: Sat Feb 18 2006, 11:59AM
Location: SkÃ¸rping, Denmark
Posts: 741

Paul Benham wrote ...

Hi Finn,

You have a reset IC on the 15V rail that shuts down the drive if the supply fails. I wondered what this IC was that you used?

Cheers,

Paul.

Paul,

I am not sure I follow you on that one. I donÂ´t know what a reset IC is.

Cheers, Finn Hammer

Finn Hammer

Wed Feb 10 2010, 08:20PM

Registered Member #205 Joined: Sat Feb 18 2006, 11:59AM
Location: SkÃ¸rping, Denmark
Posts: 741

The tapping point from hell, a tapping point to end all tapping points....

Big chunks were cut from a nice thick slab of tufnol. Taken to the mill and worked over to form the backbone of the tapping point for Thumpa.
This is RAT, Realtime Adjustable Teslacoil, territory, and only the finest will do.

Daniel is teaching me Solidworks, and this is an increadible aid in getting my thoughts on paper. I got me a quad core stationary machine to run it on, and that was nice after 5 years with only laptops. The RAT primary coil has been transferred from my skull to this modelling tool. Quite a relief that was...

We should be ready for CNC next weekend.
In the case you have not noticed, what you are witnessing in this, and the Diablo Tonnere thread is the design competition between 2 Danish toolmakers.

Cheers, Finn Hammer

Chris Cristini

Wed Feb 10 2010, 09:00PM

Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497

Good work reminds me of auto cad.

Renesis

Wed Feb 10 2010, 09:59PM

Registered Member #2028 Joined: Mon Mar 16 2009, 08:13PM
Location: Norway
Posts: 319

+1 on CAD's, it saves up a lot of space on my neuro-drive. I use Solid Edge, its not as powerful as Solidworks, but a lot faster.

I really like your RAT-consept. If your adjustment points were operated by servos, and you had circuits that could measure spark length/power output/resonance you could make your coil tune itself automatically. That'd be a nice feature, you could change topload and just watch your coil home in on its resonant frequency, like an sstc.

Coronafix

Wed Feb 10 2010, 11:48PM

Registered Member #160 Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938

Renesis wrote ...

I really like your RAT-consept. If your adjustment points were operated by servos, and you had circuits that could measure spark length/power output/resonance you could make your coil tune itself automatically. That'd be a nice feature, you could change topload and just watch your coil home in on its resonant frequency, like an sstc.

It would be the tesla coil version of this.

Finn Hammer

Fri Feb 12 2010, 11:05PM

Registered Member #205 Joined: Sat Feb 18 2006, 11:59AM
Location: SkÃ¸rping, Denmark
Posts: 741

All,

With Daniel breathing down my back, things I`d normally just hacksaw and file, are now finished in the milling machine. It`s not a bad thing, really. Of course he has a CNC mill, which is cheating in a way, but good to keep me on my toes.

Next weekend we are going to CNC mill all my primary details, so good to cheat.

I am still struggeling to decide, whether to put 4, or just two brushes on this tapping point. 2 is easy, 4 is a bit more complicated. Somehow, I feel that the bulk of the current hardware warrants 4 points, to make a harmonic presentation, but we`l see tomorrow. I want this tapping point finished this weekend. Seing how Daniel stalled on his tapping point has taught me, that this is the key to the RAT DRSSTC DRRASSTC D-doubleR-A-SSTC

DRASTIC Dual Resonant realtime Adjustable Solidstate Tesla Instrumentation Coil

Cheers, Finn Hammer,

Aka, King of the acronyms

Steve Conner

Sat Feb 13 2010, 09:52AM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

Finn Hammer wrote ...

In the case you have not noticed, what you are witnessing in this, and the Diablo Tonnere thread is the design competition between 2 Danish toolmakers.

I think we noticed

It all just looks awesome! Can't wait for the final thunderbolt-hurling battle.

Will you be using the Prediktor driver? I debated this with Steve Ward for a bit, and we kind of came to the conclusion that the Prediktor is better than my PLL one for large DRSSTCs. Or DRASTICs or whatever

Renesis: It seems to me what Finn and Daniel are doing is more impedance matching than tuning. The adjustable thingies are exactly like the knobs on a radio ham's antenna tuner. But you do get automatic antenna tuners, so maybe it can be done. Maybe Aalborg university could get a PhD student to develop a genetic algorithm for it, or maybe we could figure out a way to capture the coil's output and run Terry Fritz's ScanTesla on it after every burst.

I was once involved in a project to hook building simulation software up to a real building's management system. The building would simulate itself continuously during the night, starting from the initial conditions measured by the BMS, and the simulation results told it what to do with its heating and air conditioning to get the offices to just the right temperature by 9am. This "optimal start" saved quite a lot of energy. It seems to me that using ScanTesla as the "brains" of a Tesla coil is just the same thing, but more fun.

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