Re: [TCML] using larger secondary wire for the base

[Helen Lo <quarkster@xxxxxxx>]

This issue was recently discussed on 4hv.org, in the Tesla Coil forum under "Secondary Terminations" (now on page 3 of the Tesla Coil section). There are photos of a number of different concepts shown for terminating secondary windings at both the top and bottom of the secondary (including a few of my own).

  Regards,
  Scott Hanson
Scott Bogard <teslas-intern@xxxxxxxxxxx> wrote:
  
Thanks Gary,
Your system is better than mine, but unfortunately I would have to 
do a lot of redesigning to use it (I don't even use end caps! shh!! 
don't tell anyone!) My previous system was designed without any expert 
help, and that is why it is so bad (on the other hand, my secondary goes 
from sitting in the garage, to ready to run on the coil in about 30 
seconds, so I guess it isn't all that bad.) Basically my secondary sits 
in a 6-in PVC pipe cap, and the wire gets put into a grounded bus bar a 
foot or so away (it is run under the primary, which has adjustable 
height (backwards I know)). I had a thicker wire, and it worked well, 
but it broke a few times, and the performance just doesn't seem quite as 
good using the thin wire to make the connection (probably just wishful 
thinking!) Anyway, thanks again.

Scott Bogard.

Lau, Gary wrote:
> What you suggest is certainly OK - the added turns will be negligible as you say. But it sounds like the base wire will need to be routed above the primary, where it may be a target of streamer strikes and arcs from the primary.
>
> I prefer to make my base connection below the primary, through a 1/4-20 bolt that also serves as the secondary attachment. Same with the top load connection. See http://www.laushaus.com/tesla/secondary.htm.
>
> Regards, Gary Lau
> MA, USA
>
> 
>> -----Original Message-----
>> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
>> Behalf Of Scott Bogard
>> Sent: Wednesday, April 02, 2008 11:01 PM
>> To: tesla@xxxxxxxxxx
>> Subject: [TCML] using larger secondary wire for the base
>>
>>
>> Hey all,
>> Quick question, I was trying to figure out a better way to attach
>> my secondary to my ground and I thought of an idea. Basically there is
>> a danger of snapping off the secondary wire if I solder a heavier cable
>> directly to the thin 22 AWG wire, unless I wrap a few turns of the
>> heavier wire around the base and secure it so that I can solder them
>> together and have no fear of the joint breaking in case something gets
>> jiggled. Is this a bad idea, I don't really see how, but I've never
>> heard of anyone actually doing this. Assuming I use two turns or so the
>> inductance change should be negligible. Thanks.
>>
>> Scott Bogard.
>>
>>
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