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Re: Output Voltage vs. Firing Rate (fwd)
---------- Forwarded message ----------
Date: Wed, 05 Aug 1998 08:05:23 +0300
From: Marco Denicolai <marco-at-vistacom.fi>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Output Voltage vs. Firing Rate (fwd)
At 21:28 04/08/98 -0600, you wrote:
>
>
>---------- Forwarded message ----------
>Date: Mon, 3 Aug 1998 21:46:29 -0600
>From: terryf-at-verinet-dot-com
>To: tesla-at-pupman-dot-com
>Subject: Output Voltage vs. Firing Rate
>
>Hi All,
> We were having a little Colorado Tesla meeting on Sunday. I noticed that
>my gap seemed to give better sparks when the gap was set to a lower voltage
>than maximum. In other words, The streamers were longer with lower gap
>voltage settings. Modeling shows that this is probably due to the fact that
>the firing rate probably increased by a factor of three from 120 Hz to 360 Hz.
> I have always tried to design coils to create a very high output voltage.
>However, Sunday's experiments would suggest that we need a higher firing
>rate ( >120 Hz ) also. In fact, one may need to sacrifice substantial
>output voltage to increase the firing rate to get the best streamers.
I have experienced this same too. Higher fire rate (that is, lower break voltage
and gap spacing) results in longer streamers. The problem is that the spark gap
gets a lot wormer, actually too much. That is why I am building a rotary spark
gap to have better cooling, higher and STABLE break rate. I plan to use 400
breaks/s.
> My next gap design will allow easily adjustable voltage, high power, and
>very good quenching that should allow for very optimal adjustments of these
>parameters that seem important. If anyone has any input to such issues
>please let me know.
Well, could you please tell me a little about your next gap above mentioned?
Is that
going to be a static one?
________________________________________________________________________
Marco Denicolai Vista Communication Instruments, Inc.
Hardware Development Manager www.vistacom.fi
marco-at-vistacom.fi Kaisaniemenkatu 13 A
fax: +358-9-622-5610 SF-00100 HELSINKI
phone: +358-9-622-623-15 Finland
Remember, Murphy was an optimist! I am not...
________________________________________________________________________