On Sat, 26 Sep 1998 20:39:06 -0700 (PDT) igor rosky <irosky@yahoo.com>
writes:
>
>
>reading eimacs Fault Protection it suggest this resistor for tube of
>1500 watts or less, and a more complicated system for larger thoriated
>tungsten tubes,
>is using B+ current limiting resistors in 9k 3amps power supplies
>still appropriate, this would require very large wattage resistors to
>meet eimacs 50 joule and less energy dissapation, i have tried the #30
>wire short test with resistors, it always leads to destruction of the
>wire! 9kv at 3amps is a huge energy load to disipate. Any opinions
>would be appreciated.
>
>Sorry for all these simple questions, i am not a broadcast engineer,
>but trying to learn as much as i can.
>
>Igor
High power and cheap are not often attainable Igor!
At 9KV you will need several resistors in series to stay within the
individual voltage ratings.
225W wirewound resistors are not that expensive new; about $11 each for
Ohmite at Mouser.
>
>
>
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