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