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Re: MOTs Rule!

Hi Dr. R. and Greg,

Some power resistors "normally" run at 350 degrees Celsius!!  They are just
heating elements that look like resistors.  When mounting and running those
big watt power resistors, plan on them getting almost red hot!!

I ran into this with people complaining about how hot the resistors in RC
neon protection filters get.  Reps from Ohmite simply explain that to
dissipate say 200 Watts in a give area, they run them "very" hot.  The
ceramics don't care at all.  So don't be at all surprised at the extreme
temperatures ceramic power resistors can "normally" run at.

Cheers,

	Terry



At 08:42 PM 03/03/2000 -0600, you wrote:
>
>Your protect resistors may be running too hot because coeff. coupling is too
>tight.  Reduce it and see what happens.
>
>Dr. Resonance
>
>
snip...

>> Oddly enough, the only weak link seems to be my 100 Ohm, 55 Watt RF filter
>>resistors.  They run hot as pistols!  I'll have to go up to 100 Watt
>>resistors I guess.
>>
>>Right now it's just a crude lashup literally taped together on my work
>>bench.  I'll package the MOT supply properly over the next few days with
>>neat, soldered connections, safety gaps, etc.  I may even immerse the MOTs
>>in oil to enhance cooling.  I can't wait to try some longer runs.
>>
>>Low budget coilers unite!  MOTs rule!
>>
>>Greg Hunter
>>Cochran, GA
>>
>>
>