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Re: [TCML] Plastic Capacitors "HG" series





Hi Ben, 



The only line of capacitors that Plastic Capacitors makes 

that I "know" are suitable for Tesla coil service are either 

their "GR" or even better, their "BNZ" custom series. How- 

ever, as Gary has pointed out, you can request their cata- 

log or you can call them and ask to speak to one of their 

capacitor desinger/engineers. I have called them before 

with questions and have found them to be very friendly 

and helpful. 



David Rieben 


----- Original Message ----- 
From: "Gary Lau" <Gary.Lau@xxxxxx> 
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx> 
Sent: Monday, April 13, 2009 7:32:03 AM GMT -06:00 US/Canada Central 
Subject: RE: [TCML] Plastic Capacitors "HG" series 

I suspect these caps are not suitable for a TC.  The web page cited makes no mention of the dielectric type, but for that case style, mylar is often used, which means it will get hot quickly.  And getting hot with a glass case is particularly not good :-(   

Like the web page says, for complete specs, request their catalog, or at least ask them what the dielectric composition is.  If the answer is Mylar or polyester film, the Marx generator is a good plan B. 

Regards, Gary Lau 
MA, USA 



> -----Original Message----- 
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On 
> Behalf Of Ben Buxton 
> Sent: Sunday, April 12, 2009 8:53 PM 
> To: Tesla list 
> Subject: [TCML] Plastic Capacitors "HG" series 
> 
> 
> I picked up a bunch of these at a flea market the other day, 
> specifically HG 140-103 (0.01uF @ 14kvDC). 
> 
> How suitable are these for coiling? I fried a doorknob cap in my coil 
> (thanks to cranking the variac up too high), and am thinking of 
> replacing the tank with these. 
> 
> According to their site (http://www.plasticcapacitors.com/typehg.html), 
> they are suitable for RF currents. 
> 
> Otherwise if they're not suitable, I'll turn them into a Marx generator :) 
> 
> Ben 

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