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I am designing a Marx generator and I want to place a bleeder resistor across each capacitor in every stage of the Marx gen.

I have been looking at using low cost RI80 resistors from eBay. Each stage of the Marx will be charged by a 45kV power supply so I was thinking of using five or six RI80 10kV 3W 200MOhm resistors in series for each stage.

I have run into conflicting data that RI80 resistors are wirewound or some kind of glass glaze film resistors. I know wirewound resistors have a large inductance. If they are wirewound does the high inductance matter if they are being placed across a capacitor and used as bleeder resistors?

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    \$\begingroup\$ Please supply a PDF data sheet for the resistors you linked. \$\endgroup\$
    – Andy aka
    Commented Jan 3 at 20:27
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    \$\begingroup\$ Note with 5 or 6 resistors in series, if any one fails open or if you lose a connection along the string, you've lost your bleed path. If this is a product where safety is a concern, you should consider using resistors in a parallel/series arrangement. \$\endgroup\$
    – SteveSh
    Commented Jan 3 at 20:38
  • \$\begingroup\$ @Andy thank you for the suggestion, it did not occur to me to search for datasheet. It says it uses film and a zigzag pattern to eliminate any inductance. pdf1.alldatasheet.com/datasheet-pdf/download/1016863/TOKEN/… \$\endgroup\$
    – Robert Francis Jr
    Commented Jan 3 at 21:12
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    \$\begingroup\$ @SteveSH it is for a hobby project its not being sold or anything. If it was I wouldn't mind making my Marx stages larger and would be able to fit in more components like a parallel bleeder resistor. \$\endgroup\$
    – Robert Francis Jr
    Commented Jan 3 at 21:14

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Parasitic inductance is not really an issue for bleeder resistors. Wire-wound resistors should be fine.

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    \$\begingroup\$ Thank you, good to know regardless if it has high or low inductance that it should work. \$\endgroup\$
    – Robert Francis Jr
    Commented Jan 3 at 21:13

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