Re: Rotary Gap Construction? (part two)

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

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>

While the wattage of your capacitors is important what is the voltage rating
of your capacitors? Your 15/60 NTS puts out about 22Kv normaly if the power
is not up. That is what will kill your Cap first.

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Thu, 21 Mar 2002 18:25:20 -0700
> To: tesla-at-pupman-dot-com
> Subject: RE: Rotary Gap Construction? (part two)
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Thu, 21 Mar 2002 18:45:24 -0700
> 
> Original poster: "Matt Woody Meyer by way of Terry Fritz
<twftesla-at-qwest-dot-net>"
> <meyerml-at-stolaf.edu>
> 
> first and foremost- thanks to all of you for your help with my SRSG
> questions.  I'm still a bit new at coil construction and you've all been
> most helpful.  I'm sure I'll have several more questions throughout the
> engineering process. :)
> 
> Thank you again so much for all your help... the gap was the part of the
> coil that I didn't quite understand last time around, but I think I've got a
> much better grasp on it now.  Still, a few more questions:
> 
> Again, the caps I'm using are both rated at .018uF, and are rated up to
> 3600W apiece and will be wired in parallel, so C1+C2=TC=.036uF total
> capacitance of the take circuit.  The primary is fed off of two 15000V 60mA
> transformers (I think this is what I'll go with, else it will be 1 15kV 60mA
> and 2 12kV 30mA transformers.  I understand that the minimum firing rate
> that I'd like is at least 120Hz (120 fires/second)... do I want to go higher
> than this, or will this achieve maximum voltage in the primary circuit?
> 
> How many gaps do I want to use?  I know that I will need a minimum of two
> using a SRSG, but I've seen several people use four.  Probably like
> everybody out there, I'm striving for maximum arc length, so is two or four
> better?
> 
> My original idea was to hook up the coil using two outlets, one to power the
> motor, the other for the coil... however, I see that this can goof up the
> tuning in consecutive runs (gap may not be aligned with the current).  What
> I'm thinking of doing now is wiring the circuit so it only runs off of one
> outlet.  On my "control panel", I am thinking of setting up two switches...
> one for the motor (running separate from the variac) and then the HV circuit
> (running through the variac).  The motor circuit would be controlled
> independently of the HV circuit, but must start up first in order to apply
> the HV circuit.  This works, right?
> 
> Lastly, I've heard that I should use a bleeder circuit in the tank so as to
> discharge the capacitors while the system is off... does anybody have any
> suggestions for this?  I'm still young (21), and I really don't feel like
> dying for some time, especially after dropping thousands of dollars on this
> education (practically sold my soul to St. Olaf) :)
> 
> Thanks again, I really appreciate everything!  Also, thanks for the
> protection circuit suggestions. :)
>> <>Matt Meyer
> 
> ps: please feel free to e-mail me directly about anything.
> meyerml-at-stolaf.edu
> 
>> <>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>
> Matt "Woody" Meyer         Ellingson 120       507-646-2883 (CUTE)
> 
> St. Olaf College Physics Major
> St. Olaf Admissions Tour Co-Coordinator
> 2001-2002 Ellingson Hall Residence Life Junior Counselor
>> <>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>  ><>
> 
> -----Original Message-----
> From: Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent: Thursday, March 21, 2002 5:39 PM
> To: tesla-at-pupman-dot-com
> Subject: Re: Rotary Gap Construction?
> 
> 
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <Esondrmn-at-aol-dot-com>
> 
> In a message dated 3/20/02 4:19:32 PM Pacific Standard Time,
> tesla-at-pupman-dot-com
> writes:
> 
> 
>> 
>> Hello hello,
>> My last coil used a static spark gap with marginal results at best, so
>> I'm
>> planning out a means of building a rotary gap.  Since many of you seem to
> be
>> experts in construction, I was wondering if anybody would mind throwing in
> a
msnip...