26 Oct
2015
26 Oct
'15
10:52 a.m.
On 2015-10-26 1:23 PM, Ian Finder wrote:
This thread took a turn for the absurd. Oil? Water?
What a practical
bunch of people. /s
They make resistors with adequate cooling... Almost as if they're
rated for a certain number of watts of dissipation and you can buy
them based on that. They are resistors after all.
And if they overheat-- oh wait, they're heavy duty resistors, not
ICs. Get a couple, put them in a metal project box, put it inline
with the cable, and call it a day.
Damn, I already ordered a pile of HVAC gear.
j/k - yeah that was what I was basically planning, Ian ... just as a
noob, I'm not totally confident with what a single air cooled part can
dissipate.
(The thread was kind of interesting anyway!)
--Toby
Sent from my iPhone
On Oct 26, 2015, at 09:24, simon <simski at
dds.nl> wrote:
please skip this ridicule and grab yourself a couple of headlights from a car.
On 26-10-15 17:16, Dale H. Cook wrote:
My recommendation of oil is based upon my decades of experience with broadband dummy
loads from 60 watts to 2.5 kilowatts. The dummy loads that I have worked with for medium
wave and below and from 5 kilowatts down have all been convection air cooled. Broadband
dummy loads that I have used for higher powers (up to 25 kilowatts) have been forced air
cooled.
I prefer to stick with what I have experience with. As for water, YMMV.
Dale H. Cook, Radio Contract Engineer, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcityeng/index.html
--
Met vriendelijke Groet,
Simon Claessen
drukknop.nl