[Kenwood] there is no such thing as a stupid question

[Richard Keller]

Thanks to all for the answers. I will coat all surfaces very
sparingly but completely.

73, Dick KF4NS
St. Petersburg, FL 33714 USA
Keep the glow!

----- Original Message ----- 
From: "KD5NWA" <kd5nwa at cox.net>
To: "Richard Keller" <rkeller at ij.net>
Cc: <kenwood at mailman.qth.net>
Sent: Tuesday, July 26, 2005 8:05 PM
Subject: Re: [Kenwood] there is no such thing as a stupid
question


| The purpose of the zinc oxide is to create a 100% contact
area
| between the transistor and the heat sink so you get
maximum heat
| transfer. In order to do that you apply the compound on
both sides of
| the mica so there are no air pockets between the mica and
the
| transistor, and the mica and the heat sink.
|
| At 05:17 PM 7/26/2005, Richard Keller wrote:
| >Ok guys, don't chuckle, remember I am an OT. I am
replacing
| >a couple transistors that require the mica insulators and
| >heatsink compound. My question is this: do you apply the
| >heatsink grease on both sides of the insulator or just
| >against the heatsink?
| >
| >I have done this many times with regulators but they use
a
| >case ground, and lots of transistors where no heatsink is
| >required. My huge library of books never mentions this
| >situation except in generalities, no specifics.
| >
| >Thanks and listening for the chuckles anyway. Hi,Hi
| >73, Dick KF4NS
| >St. Petersburg, FL 33714 USA
| >Keep the glow!
| >
|
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| >
| >
| >--
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Date: 7/25/2005
|
| Cecil Bayona
| KD5NWA
| www.qrpradio.com
|
| 'Never argue with an idiot. They drag you down to their
level then
| beat you with experience.'
|
|
|
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