It is a vast improvement over the previous arrangement, it will be
interesting to see how the coil performs.
Regards
Phil
www.hvtesla.com
-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Teslalabor
Sent: 21 November 2010 12:11
To: Tesla Coil Mailing List
Subject: [TCML] 3000W Halogen Dummy Load WAS: Coil V4 fail (additional)
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
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