RE: [TCML] SRSG Noise level.

["Phil Tuck (hvtesla)" <phil@xxxxxxxxxxx>]

Hello Gary.
Yes I guessed the physical setup would certainly need changing. Good point
on the bang size as I was tending to concentrate on the distictive tone of
200 bps to the ear. If the 100 bps is not so annoying, but then ends up
louder, little would have be gained.


Phil


-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Lau, Gary
Sent: 28 August 2009 23:21
To: Tesla Coil Mailing List
Subject: RE: [TCML] SRSG Noise level.

It's not as simple as it may seem, to switch between 100 and 200 BPS.
Simplistically it could be done, but if one was at all interested in keeping
things optimized, you'd also have to double the capacitance if you halve the
BPS, to keep the power throughput constant.  And of course if you double the
capacitance, you'd need to halve the primary inductance to keep it in tune.
And maybe tweak the pri-sec coupling.

Assuming that one did all this, my guess is that the lower BPS would be
louder, as the bang size will be higher.  But Tesla coils are loud, there's
no getting around that, no matter what break rate you choose.  

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Phil Tuck
> Sent: Friday, August 28, 2009 4:24 PM
> To: Tesla@xxxxxxxxxx
> Subject: [TCML] SRSG Noise level.
> 
> Hello.
> Putting aside issues regarding spark length and spark behaviour, can
anyone
> say which would provide the quieter running. Either a  bps rate of 100 or
> 200 ( 120 or 240) ? No doubt someone has run the same coil with the same
> power levels on both bps rates, and I wondered what their results were.
> I know the simple answer would be to remove some electrodes on my 200 bps
> SRSG that I have and then compare it myself,  but I am in the process of
> rebuilding my SRSG after a mishap with it, and I'm considering going to
> 100bps, but only if it will quieten things down.
> Power is 5 to 6 kva.  The 200bps I constructed had a lovely whine to it,
but
> I wonder if it may also draw the ear's attention to it a bit more.
> 
> Phil
> 
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