Re: Dead MMC. was: AAAA! My coil...

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

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi,

1/4 watt resistors will not work for MMC bleeder resistors.  They don't 
have enough size to standoff the voltage.  1/2 watt is the minimum size needed.

DigiKey #  10MH-ND   is very popular and well tested.

Cheers,

         Terry

At 07:45 PM 11/27/2002 +0000, you wrote:

>Just a note.. standard size resistors at 1/4 watt, not 1/2 watt
>
>>
>>At 9000 VAC, the peak voltage is 12728 volts.  Six caps are rated at 
>>12000 volts.  So you are a little over.  However, I would not worry about 
>>it at all.  Six caps per string should be fine.  If you are using 10M 
>>resistors, they are at their power rating (0.45 watts) so no problem 
>>there either.
>>However, the resistors may get a little warm but spacing them should keep 
>>them from heating the caps.  If you wanted to be real safe, you could use 
>>two resistors in series per cap.
>>
>>Cheers,
>>
>>         Terry
>>
>>
>>
>>
>>>-Chris