[TCML] 3000W Halogen Dummy Load WAS: Coil V4 fail (additional)

["Teslalabor" <teslalabor@xxxxxxxxxxx>]

Hi Phil, others,

before I will do a full scale test with secondary in place, I performed a 
test with a big 3000W dummy load in place of the primary. The dummy load 
consists of 6 halogen bulbs each 230V / 500W connected in series. I made a 
video of the dummy test:

http://www.youtube.com/watch?v=pp3M2KNXbrs

The system seems to run very smooth, Richie's resonant charging design works 
pretty well. Compare it to an earlier video, where I used much to high 
primary capacitance (240nF) and other bad parameters and got terifying 
glowing electrodes:

http://www.youtube.com/watch?v=O84SI50g0NY

as you can see I also did some changes @ the SRSG but the electrode diameter 
is the same (4mm tungsten).

Will tell you the results (+ video) when testing with secondary in place.

Best Regards
Stefan

----- Original Message ----- 
From: "Phil Tuck" <phil@xxxxxxxxxxx>
To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx>
Sent: Saturday, November 06, 2010 8:09 PM
Subject: RE: [TCML] Coil V4 fail (additional)


> Stephan,
>
> Your specs are similar to mine.
>
> I compared a recent video where I have resonant capacitor (101nF) cap
> against an earlier run with the same ballast setting (20 mH) but where it
> was just below the resonant value with a 72nF capacitor.
>
> You can see the difference between the two. (Both are 200bps SRSG with a
> Freau controller)
>
> How much is down to making the system being resonant @ 200bps and just how
> much is just down to a larger cap, it is hard to say of course.
>
>
>
> My earlier 72nF setup was almost resonant:
> http://www.youtube.com/watch?v=dZc9mUOJh9Y
>
>
>
> The latest 101nF setup is resonant (@ 200bps on 50Hz ):
> http://www.youtube.com/watch?v=DBG_0Xv7J3s
>
>
>
>
>
> Phil
>
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
> Of Teslalabor
> Sent: 06 November 2010 14:57
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Coil V4 fail (additional)
>
>
>
> Phil,
>
> okay thanks a lot. Will post the results + video of the coil running. Just
> have to put the parts together. By the way, the specs of the tank circuit
> are (resulting from the resonant charging design procedure):
>
>
>
> Input: 0-240V fed via variac
>
> Power coil will process: 5kW
>
> 200bps SRSG
>
> Primary Voltage: 10kV from PT's
>
> heavy adjustable air gapped inductor 20mH ( if "I" part of core completely
>
> removed) ... >100mH; no saturation effects), adjusted to 30,8mH 98nF Tank
> Cap (commercial 25kV BOSCH pulse cap) - REMEMBER, I first used 240nF and 
> got
> badly glowing electrodes @ my SRSG!
>
>
>
> It's the first system I designed this way - all my earlier systems I did 
> the
> way "take some parts and see what happens". So I am absolutely longing 
> what
> performance this system will have.
>
>
>
> Best Regards
>
> Stefan
>
>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla 

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