Re: [TCML] DC coils

[Futuret <futuret@xxxxxxx>]

Steve,

Your method sounds innovative and impressive.  I too would like to see the details
and schematics posted somewhere at a website, if anyone is willing to set that up.

Thanks,
John

 

 


 

 

-----Original Message-----
From: S&JY <youngs@xxxxxxxxx>
To: 'Tesla Coil Mailing List' <tesla@xxxxxxxxxx>
Sent: Sun, Jan 30, 2011 11:30 am
Subject: RE: [TCML] DC coils


Paul, as far as I know, the idea is original.  I have never heard of others

doing it this way.  I just didn't like using large value charging reactors

in the regular DC setup.  Even with 4 MOT secondaries in series, and even

with core gaps, the reactor would saturate and the RSG would power arc when

the BPS got below 80-100 bps.  And I didn't like the idea of the power

supply undergoing the wicked impulses every time the RSG fired, especially

when it would power arc.  Meter needles can only take so many whacks when

they pin due to overcurrent!


Charging reactor size is determined by how much time you have to charge the

tank cap.  This is determined by the maximum velocity of your rotating gap

and your estimate of how long the gaps are close enough for a spark to jump

across.  I decided 400 bps was as fast as I wanted to go, and I assumed the

gap would jump for a quarter inch travel of the rotating electrode.  Knowing

the radius of the electrode, the presentation time was calculated.


As Richie's site explains, that presentation time is a half cycle of the

resonant frequency of your tank cap and your charging reactor.  Knowing the

value of your tank cap, you can calculate the value of your charging

reactor.

RSG has twelve tungsten electrodes perpendicular to and near the edge of the

insulating support disk. Radius is 5.5 inches.  Each stationary gap is a

pair of tungsten, one on each side of the rotor, so that the rotor

electrodes pass between them.  Each of the two stationary gap pairs are

mounted so that when one rotor electrode is aligned between one stationary

pair, the other stationary pair is half way between other rotor electrodes.


I don't have a website of photos and other data.  For those who are

seriously considering experimenting with this, I can send some spreadsheets

and other info that can give you some ideas.  And you can feel free to post

them on a website if you wish.

Steve Y. 





 
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla