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Re: [TCML] Tesla Coil Tuning
Is your RSG really operating at 1100 BPS? That's like a factor of 5-10 too
high. And your primary cap value of 18.75nF is very high for a 10/23 OBIT
power supply. There's no way that little OBIT can charge such a large cap,
1100 times per second. It's probably firing at a much lower break rate. I
think you need to slow your RSG way down (bearing in mind that TOO slow can
result in over-volting damage) and use a much smaller cap. And most
important, put a safety gap in parallel with the RSG if you don't already
have one there.
Regards, Gary Lau
MA, USA
On Wed, Jun 15, 2011 at 4:08 PM, Cole Awesome-Jordan <
jordancole@xxxxxxxxxxxxxxxxxxx> wrote:
> Recently i installed an asynchronous rotating spark gap on my coil and its
> breaks rate is 1,100 bps (and it does fire continuously it stops and goes).
> And i and puzzled as to why the performance of the coil has not increased,
> it seems the same as when i used a static spark gap.
> I am tapped into the primary at 8.23 turns, because its where i find the
> streams are the best. However that being said the longest i can get is a 8".
>
> Here are the specs for the coil, i used TeslaMap5. Any insight would be
> appreciated.
>
>
> TeslaMap Coil Summary
> 6/15/2011
>
> ---------- Power Supply ----------
> NST V Out 10 kV
> NST I Out 23 mA
> NST Input V 120 V
> NST Input F 60 Hz
> NST VA 230.0
> NST Watts 239.1 W
> NST Impedance 435 Kohms
> Max Arc Length 26.3 in
> NST PFC Cap 42.4 uF
>
> ---------- Primary Capacitor ----------
> Your Cap 18.75 nF
> Resonate Cap 6.1 nF
> LTR Static Cap 8.5 nF
> LTR Sync Cap 11.6 nF
>
> ---------- Secondary Coil ----------
> Single build magnet wire
> 26 AWG
> Wire Length 968.7 ft
> Wire Weight 0.74 lbs
> Wire Resistance 39.7 ohms
> Coil Height 18 in
> Coil Diameter 3.5 in
> Coil H/W Ratio 5.1 : 1
> Coil Turns 1,057.8
> Inductance 17.50 mH
> Capacitance 7.00 pF
>
> ---------- Top Load ----------
> Overall Diameter (1) 16 in
> Ring Diameter (1) 4 in
> Overall Diameter (2) (optional) in
> Ring Diameter (2) (optional) in
> Sphere Diameter (optional) in
> Top Load Adjustment 95 %
> Top Load Capacitance 19.01 pF
>
> ---------- Top Load + Secondary ----------
> Resonate F 235.87 kHz
>
> ---------- Primary ----------
> Wire Diameter .25 in
> Wire Spacing .75 in
> Hole Diameter 5.5 in
> Coil Angle 0 degrees
> Coil Adjust 95 %
>
> Needed primary inductance with:
> Your Cap 15.26 uH
> Resonate Cap 46.89 uH
> LTR Static Cap 33.49 uH
> LTR Sync Cap 24.68 uH
>
> Turn 1 0.3 uH
> Turn 2 1.0 uH
> Turn 3 2.3 uH
> Turn 4 4.2 uH
> Turn 5 6.7 uH
> Turn 6 10.0 uH
> Turn 7 14.2 uH
> Turn 8 19.3 uH
> Turn 9 25.5 uH
> Turn 10 32.8 uH
> Turn 11 41.4 uH
> Turn 12 51.3 uH
> Turn 13 62.7 uH
> Turn 14 75.6 uH
> Turn 15 90.1 uH
>
>
> _______________________________________________
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> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
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