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Re: suitable bleeder resistors for MMC



Original poster: "Allanh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <allanh-at-starband-dot-net>

Hi Malcolm,

I am using 2.7 Meg ohm 4 watt resistors that are very cheap but since they
can handle over 10 times the power
expected, and are 1.5 inches long, they should work well. I bought them from
Antique Radio supply, in Tempe, Arz.  When I run my TC for 10 minutes, the
resistors aren't even warm.

allan

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, February 28, 2002 6:16 PM
Subject: Re: suitable bleeder resistors for MMC


> Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<evp-at-pacbell-dot-net>
>
> > The DC voltage rating Must be applied in conjunction with the power
> > rating for these. e.g. If you run 3.5kV continuously across a 10MOhm
> > resistor, its dissipation will exceed 1W. You will therefore be
> > violating one of the specifications.
> >      For a large number of reasons, I recommend going to 33MOhm or
> > higher. There is no particular benefit in choosing 10MOhms and there
> > can be some drawbacks as I mentioned previously.
> >
> > Regards,
> > malcolm
>
> At those prices, putting three in series would seem preferable, for the
> extra margin of safety.  Depending on the lead spacing of the
> capacitors, three in series might fit pretty well if arranged in a
> straight line.
>
> Ed
>
>
>