Re: MMC resister problem

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "rheidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-zialink-dot-com>

Steve , I recomend using at least 3 or 4  resistors in series. The gap
inside the resistors is only about 1/8" with 16Kv the gap is quite short.
  Robert  H 

> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Sun, 02 Jun 2002 18:36:13 -0600
> To: tesla-at-pupman-dot-com
> Subject: Re: MMC resister problem
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Sun, 2 Jun 2002 18:44:01 -0600
> 
> Original poster: "Steven Ward by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <srward16-at-hotmail-dot-com>
> 
> 
> 
> 
>> From: "Tesla list" <tesla-at-pupman-dot-com>
>> To: tesla-at-pupman-dot-com
>> Subject: MMC resister problem
>> Date: Sun, 02 Jun 2002 12:31:50 -0600
>> 
>> Original poster: "Steven Ward by way of Terry Fritz <twftesla-at-qwest-dot-net>"
>> <srward16-at-hotmail-dot-com>
>> 
>> Hi everyone,
>> 
>> My friends large coil project has been having problems with the cap and im
>> hoping someone could give me an answer.  Here are the specs for his MMC
>> cap:
>> 
>> caps are green Russian military caps.  .0047uf-at- 16kvdc each.  We wired them
>> into strings of 3 in series, with 30 strings in parallel.  Thats a lot of
>> caps!!
>> 
>> Now we only have a single 10meg ohm resister across each cap, and the
>> problem is that these cheap radioshack resisters are starting to arc
>> between
>> the leads.  I have a feeling that its because 1) they are not rated for HV
>> and 2) we only have 3 caps in series, so its alot easier for it to arc
>> across 3 resisters, rather than the 7-10 that a normal MMC would have.
>> 
>> So...  would i be able to fix this by putting 2 resisters across each cap??
>> or would we need more like 3 on each cap?
>> 
>> Any other suggestions are welcome.
>> 
>> Steve Ward.
>> 
> 
> 
> Sorry, i forgot to mention that the PSU is a 12kv 120 ma, bank of 2 NST's.
> 
> Steve Ward.
> 
> 
>