Re: [TCML] mmc cap protection by spark-gaps-any ideas?

[bunnykiller <bunnikillr@xxxxxxx>]

Hey Jolyon...

the idea of the resistors is to bleed off the existing voltage after the 
system has been turned off to reduce the shock hazard when handling the 
primary circuit. By using miniature sparkgaps, this does not allow the 
cap to bleed down properly once the system has been turned off.  Also, I 
feel that the mini spark gaps would conduct during the run phase of the 
coil at some point robbing power from the primary circuit....
Have you considered the possibility of using 2  5meg resistors in series 
in place of the 10 meg?

Scot D

vatercox@xxxxxxx wrote:

> Dear List
> I have 30 x 47nF polypropylene metal foil caps, each rated at 2 kVDC 
> which I intend to wire as three strings of 10 capacitors for 
> approximately 14nF at 20kV DC. While normally each capacitor in an MMC 
> would be protected by a 10- or more megohm high voltage resistor these 
> have proved difficult to obtain (due to lack of demand?). In liu of 
> this would it be possible to protect each cap with a miniature 
> spark-gap -perhaps a pair of closely-positioned stiff wires connected 
> to the capacitor leads notwithstanding the fact that 2 kV is usually 
> regarded as a bit on the low side for satisfactory spark-gap operation
>
> Jolyon Francis Vater-Cox
> ________________________________________________________________________
> AOL Email goes Mobile! You can now read your AOL Emails whilst on the 
> move. Sign up for a free AOL Email account with unlimited storage today.
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla

_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla