Hi Richard. It's amazing how some 'old wives tales' never die. There was recently an excellent link on eHam about heat sink compounds. The author worked as an EE for a large cable Co. So, he dealt with weatherproofing/heat sinking every day.
Bottom line was: good ole Dielectric grease from the auto parts store works in both cases. Used in moderation!
My own pet peeve is this: I built nuclear weapons while in the Navy. Went to school at the Sandia Corp in New Mexico. The weapons always used O-rings for obvious reasons. We used Dow Corning "Ground Glass Compound" on these O-rings. It meant: "for use on ground glass fittings" such as you would find in a lab. It had NO F'N ground glass in it!
I even visited MT after the Challenger disaster, in a different capacity. Could not believe they used O-rings on the Shuttle.
But I digress.....
ron
N4UE
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-----Original Message-----
From: Richard Knoppow <dickburk@...>
To: TekScopes <
[email protected]>
Sent: Thu, May 3, 2018 4:05 pm
Subject: [TekScopes] Heat Sink Compound
I am still working on my 453. The HV transformer is mounted
with some sort of clear grease. I think this is heat sink
compound but may just be silicone insulating grease. What is
recommended here? I am also replacing Q-930 and wonder what
compound is recommended for it.
I have clear silicone grease intended as a HV insulator by GC
chemicals, is it OK for the transformer. I can get regular heat
sink compound locally if necessary.
--
Richard Knoppow
dickburk@...
WB6KBL
