Re: [TCML] SISG coil

[jhowson4@xxxxxxxxxxx]

Is there a way to parallel the components that limit the current, so  you could handle more current and thus use a larger cap size? 



I would imagine so, but i worry about an unequal current distrubution due to slight variences in the component itself and then there is the problem with what happens if both parts dont fire at the same time.    











The part i am talking about here is an IGBT right?  cause i dont really know.  








Thanks, 
John "Jay" Howson IV 


"Why thank you, I will be happy to take those electrons off you hands."  






Thanks, 
John "Jay" Howson IV 


"Why thank you, I will be happy to take those electrons off you hands."  


----- Original Message ----- 
From: "James" <mustang3@xxxxxxx> 
To: Tesla@xxxxxxxxxx 
Sent: Friday, August 20, 2010 12:25:09 AM 
Subject: [TCML] SISG coil 

Hi Bart, prolly 100nF in that vid. I normally run that coil on three MOT's, 
sec's in series, pri's in parallel. A large choke is used to control the 
current. Normally (using MOT PS) the SISG coil uses 144nF. Firing at 12KV. 
The firing voltage is determined by the SIDAC string. Each module conducts 
around 900 to 1000 volts. I am using 12 when running on the MOT's, 16 
modules when using the pole xmfr. Thing about the SISG coil is how spooky it 
is. When the coil is energized, but the variac is set lower than the firing 
voltage, there is no noise. Back in the old days with the spark gap coils 
you could hear the coil was energized (it would hiss) even if it wasn't 
firing the spark gap.  Since the SISG runs on DC, extreme caution is 
required. James 

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