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Re: "Draining Energy" and Location of HV Supply Parts
---------- Forwarded message ----------
Date: Sun, 12 Oct 1997 16:03:25 -0500
From: "DR.RESONANCE" <DR.RESONANCE-at-next-wave-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: "Draining Energy" and Location of HV Supply Parts
To: Chuck
Components under the primary make the units excessively heavy and large
metal objects under the primary, ie, a supply transformer, drain current
from the primary inductor. Also, any protect RFC's should be well away
from any influence of the primary. We have performed countless tests with
o-scopes measuring spikes and other factors regarding the influence of the
primary location with respect to other components. The tank circuit
current is high and demands the cap and switching gap be located under the
primary which is suitably elevated of course, but the power supply should
be a remote distance. If you are experiencing strikes just make your power
supply leads longer.
Hope to see you Monday evening. We have set up quite a HV feast.
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: "Draining Energy" and Location of HV Supply Parts
> Date: Sunday,October 12,1997 12:53 PM
>
>
>
> ---------- Forwarded message ----------
> Date: Sat, 11 Oct 1997 17:08:55 -0500
> From: Chuck Curran <ccurran-at-execpc-dot-com>
> To: Tesla List <tesla-at-pupman-dot-com>
> Subject: Re: "Draining Energy" and Location of HV Supply Parts
>
> Hello Ted:
>
> For what it's worth, I've built two systems with the pulse caps and the
> rotary and stationary gaps directly under the primary. Since I use a
pole
> pig it's not really practical to try and fit that puppy under there too!
I
> have about 8-9" from the primary to the top of any of the components
> metioned with no problems discovered to date.
> I really decided to do this after seeing several photo's and video tapes
of
> systems in operation with the spark gaps and caps set off to the side of
the
> primary/secondary structure. What caught my eye was the fact that
setting
> these items off to the side made a wonderful target for the spark--these
> items did seem to take lots of hits. If the parts are located under the
> primary and a strike rail is also employed, I believe you have a lower
risk
> of damaged components--so far, it has worked well for me. Another
advantage
> of placing the gaps under the primary is that a convient structure is
then
> available to enclose the spark gap so that no one is staring at it which
is
> an intense enough light source so that eye damage is a real possibility.
> One more thought, putting these items under the primary allows you to
keep
> your connections short. If you are lugging these parts around and
> connecting and disconnecting things, your system tune could be perfect
one
> time and off the next. I vote for components under the primary, with
proper
> spacing.
>
> Chuck
> -----Original Message-----
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
> Date: Saturday, October 11, 1997 3:32 PM
> Subject: "Draining Energy" and Location of HV Supply Parts
>
>
> >
> >
> >---------- Forwarded message ----------
> >Date: Fri, 10 Oct 1997 18:43:21 -0500
> >From: Tedd Payne <tpayne-at-netnitco-dot-net>
> >To: Tesla List <tesla-at-pupman-dot-com>
> >Subject: "Draining Energy" and Location of HV Supply Parts
> >
> >I don't recall hearing much about this, can someone advise me?
> >
> >I'm trying to decide whether to place the neon transformer, cap, spark
> >gap assembly, and "protective" parts UNDER the primary, or off to the
> >side in a SEPARATE enclosure. Here are the things I'm wondering about:
> >
> >1. Assuming some sort of "flashover" is not the issue here, does the
> >proximity of the above parts cause a performance-reducing drain on the
> >primary? If so, how far away would these parts need to be to make the
> >drain insignificant?
> >
> >Would it be better to have these parts "off to the side"?
> >
> >2. Is the proximity of the FLOOR below the coil likely to cause a
> >performance-reducing drain on the primary? If so, how far above the
> >floor would the primary need to be to make the drain insignificant?
> >
> >Thanks!
> >
> >Tedd
> >