Re: Dummy load

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

Original poster: "Jim Lux by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Sure you can... The real limitation on those resistors is the breakdown
voltage across one resistor, particularly the creepage path from terminal to
the casing to the terminal on the other end. The inside is potted.  Oil will
help the creep breakdown, but otherwise you could just mount them on some
high temperature insulating substrate.

They're also not particularly low inductance.

The real question is "a dummy load for what"?  If you want to load down a
NST or distribution transformer at 60Hz, they'll do just fine, or for
loading a multiplier, however for a TC secondary, or Marx generator, the
weird parasitics might (will?) bite you.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, May 31, 2003 9:51 AM
Subject: Dummy load


 > Original poster: "Richard W. by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<potluck-at-xmission-dot-com>
 >
 > Hi all,
 >
 > Maybe I'm being a bit out in left field with this one and knowing me it's
a
 > good possibility. Anyway, I have 40 Dale Aluminum 50K 50W resistors. If I
 > use individual heatsinks on each and possibly under oil to insulate each
 > case/heatsink from the others can I build a dummy load? I could make 4
 > strings of 10 then 2 paralleled strings in series would give me 500K total
 > resistance. Taps could be used to allow some degree of variability.
 >
 > Is this possible? Or am I off base with this one?
 >
 > Rick W.
 >
 >