RE: Secondary size

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Luke" <Bluu-at-cox-dot-net> 

Just checked it out  thanx.
It gave me some thoughts and ill be hitting the archives with some
questions.
You mention the duty cycle being low.
There would still be 120 bangs per second just as the 60HZ line has 120
peaks per second.  Look like the same duty cycle.

Or were you talking about the bangs dissipating faster than the time
between bangs so it is off for a short time between bangs?

Or did you mean that the average user will run it for a couple minutes
then turn it off for a while?

Luke Galyan
Bluu-at-cox-dot-net

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Saturday, January 17, 2004 7:28 AM
To: tesla-at-pupman-dot-com
Subject: Re: Secondary size

Original poster: FutureT-at-aol-dot-com

In a message dated 1/17/04 2:10:14 AM Eastern Standard Time,
tesla-at-pupman-dot-com writes:

 >And funny ou mention 6" by 27" coil that is what I decided on.  But the
 >wire length I can get is a bit shorter so I have scaled back to 24".
 >Think that should do the trick for me?


should be OK.


 >I was wanting to use 20ga wire but have dropped to 24ga for higher
turns
 >and being able to buy it on a larger length roll.
 >
 >I am curious though if such hi currents are in the base of the
secondary
 >why is a heavier gauge not recommended.  It seems like it would stress
 >the wire.
 >Is it not a big deal because the current is more like a standing wave
 >than a current passing through the wire?


The wire is not stressed due to the low duty cycle.
It's true you can reduce losses by using a thicker wire, but if you
do, you'll increase the spark gap losses to some degree due to
a lower primary surge impedance which will result.  It's always
a trade-off between wire losses and gap losses.  This is explained
in more detail at my website at:

<http://hometown.aol-dot-com/futuret/page3.html>http://hometown.aol-dot-com/futu
ret/page3.html

Click on efficiency theory.

John