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Registered Member #3505
Joined: Sun Dec 12 2010, 06:03AM
Location: Albuquerque NM
Posts: 108
I've built a couple coils and I've always wondered how Litz wire would perform so I built one. I've noticed a few interesting properties with this coil. First it has a very narrow range of tuning about 1/4 turn on my primary. Outside of that it has almost zero output.Its also sounds completely different. but overall of the same size of form/length of windings it seems to have better output. Since I'm new to coiling let me know what you think and if you have any similar experiences with Litz wire or SGTC's in general.
Power-15kv/60ma sec-23" of 12/36 Litz wire Pri-13 turns of 1/8 copper tube tapped @ 8.5 Cap- 12nf @32kv MMC ASRG controlled with dimmer Terry filter /w safety gap home made topload 14"x4"
Registered Member #3331
Joined: Mon Oct 18 2010, 07:07PM
Location:
Posts: 4
@ Herr Zapp according U4R1A's post only the secondary is litz-wire. The primary is copper tube. I hope nobody is angry that I answered without beeing asked. If so, I apologize.
Registered Member #1408
Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
Thank you. It's impressive for a few reasons. It's a clean attractive job. I do have some questions & I know is Holiday time; but when you get a chance I really would like to know more. I know it's quite a few questions but you have "gone outside the box" in a sense & it's quite interesting. Would you have any rough estimation of the total length of wire used? I see you've noted 23" as length & I take it that is the active coil length. What was the diameter of the secondary? You also noted a narrow tuning range upon the primary (1/4 turn). When you made you initial assembly did you notice any racing sparks or corona or when the coil went out of tune - or did it simply not preform? The camera's focus does not show whether the coil was coated thickly with any lacquer was any coating used to further insulation?
You got some strong sparks however you have a good power source in that 60ma 15Kv: did you experiment with your topload at all or simply go by formula?
Registered Member #3505
Joined: Sun Dec 12 2010, 06:03AM
Location: Albuquerque NM
Posts: 108
12/36 Litz wire is ~25 awg solid core so @ 23" with a 4.5" form it is ~1300ft but when I bought the spool it weighted ~ 1.34lbs and I wound this and a 12" pancake coil which is setting in some mineral oil currently. When the coil was out of tune it didn't have any adverse effects(racing sparks) and wouldn't breakout from the topload but I could get ~2" spark with a chicken stick. It has ~7 coats of spray on polyurethane which the Litz soaked right up and became as hard as a rock. i haven't currently tried any other toploads mainly due to a lack of them but I do plan on trying out some different sizes once they are made. The one awesome thing other then how well it performs is that it required many less turns on the primary then Teslamap predicted. It said I'd need ~12-15 and Its @ 8.5.
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Litz Wire Tesla Coil SGTC
