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Re: MMC lead length and bends...



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