Re: MMC lead length and bends...

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Jim,

As Jim Lux and Antonio explained, it's likely not 
a big deal, but it "is" worth measuring, 
especially on a large MMC as you are building. 
Keep in mind that the inductance is relative. If 
you have a really small coil that uses little 
primary L, then the concern is greater. But if it 
is a normal size coil (3" secondary or larger), 
there's likely no worry's. I have found through 
both modeling and experimentation, that lead 
inductance is an issue when the primary is small 
(for a tiny coil) and the MMC inductance may also be worth taking a look at.

I'm glad you brought this point up. It's 
something I haven't measured and it was never a 
concern before (until I started building little tiny coils).

Take care,
Bart

Tesla list wrote:

> Original poster: "Jim Mora" <jmora@xxxxxxxxxxx>
>
> Hello Group,
>
> Has anyone ever taken in account the capacitor 
> lead length and bends in a LARGE mmc >300 .15uf 
> caps. If it is a non issue how are you 
> assembling the mmc short leads 3/8 spacing? I 
> was going to put a glass bead on both ends of 
> the cap, pass it through a lexan plate and 
> solder the resistor on the other side. And make 
> the connection to the next cap with a soldered 
> butt splice. The leads are making 2 right turns? 
> 18 rows of 22 each string .12uf total, 44KV. 
> That is lot of tiny inductors this method, yes?
> Furthermore, inductors in series are 
> additive-probably wholly due to the inverse 
> square law. Anyone have any ideas on this issue? 
> Or measured their MMC inductance? Iâ??ll bet its 
> a lot more then cumulative inductance of the 
> caps only. Someone please tell me Iâ??m fussing 
> over nothing; especially if itâ??s true â?º
>
> Best regards,
> Jim Mora