Re: Bleeders

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

Original poster: Mark Broker <mbroker-at-thegeekgroup-dot-org> 

I have had problems with metal film resistors in high voltage applications 
shorting or opening, sometimes fairly spectacularly.  Use the 1W carbon film.

Mark Broker
Chief Engineer, The Geek Group


On Sat, 13 Dec 2003 09:25:02 -0700, Tesla list <tesla-at-pupman-dot-com> wrote:

>Original poster: "Ian McLean" <ianmm-at-optusnet-dot-com.au> Hi all,
>
>Finally got my order of 60 x 942C20P15K 0.15uF 2000V caps from Richardson
>Electronics here in Sydney.  Woo hoo.  Starting to build my MMC this
>afternoon.  5 strings of 12 caps per string.  Seperate units for playing
>with capacitance values between about 25nF and 67nF.
>
>A question to the list if I may.  I have checked my supply of resistors, and
>on hand I have enough (60) 10M resistors  in both 1/2W metal film, and 1W
>carbon film.  Which would be best ?  It is just that the Geek Group says
>that 1/2W 10M carbon film are best.  Maybe I am being paranoid.  If 1/2W
>carbon is OK, then surely 1W carbon is OK (or even better?) too ?  The metal
>film's, even though rated as 1/2W are small and the same size as standard
>1/4W carbon, and I thought, hmmm, maybe too small to be safe.
>
>Any comments, or should I just shut up, stop being fickle, and go and build
>my MMC with the 1W carbon resistor bleeders ...
>
>Rgs
>Ian