Re: Blowing MMC bleed resistors...

["Mike Harrison" <mike-at-xxxxxxxxxxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

On Tue, 31 Oct 2000 16:46:14 -0700, you wrote:

>Original poster: "Travis Tabbal" <bigboss-at-xmission-dot-com> 
>
>
>I was wondering if anyone had any idea for me here. I have a small    
>coil I just built. The MMC is using the same Seacor .047 uF 1600V caps
>my larger 6" system uses. It is built from 3 strings of 10 caps. I    
>know 3 strings is a little small but the caps seem to be working fine.
>It's the resistors I'm having problems with. One of the strings keeps 
>blowing resistors. The other 2 have had no problem. I've replaced     
>nearly every resistor now. They just burn out. Runtimes have been     
>short, 10 seconds or so. With downtime in between. When I get in there
>after one blows the others are not hot. A little warm is all.      

   
Sounds like you're using the wrong type of resistor. 1/2 W carbon-film
resistors typically are only rated to 200-300V. Metal-glaze resistors
are designed for much higher voltages.