Send to machinist for a surface job. Don't mess around.
BOB DD
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of Steve Thompson
Sent: Tuesday, May 22, 2007 9:11 AM
To: amps@contesting.com
Subject: Re: [Amps] attaching a heat spreader to a heat sink
tjjapha@earthlink.net wrote:
> Dan,
> Please send any replys to the list. I'm in just the same stage as you are
> with the EB-104.
> The large heat sink is not exactly flat and I was wondering if a layer or
2
> of aluminum foil between the copper and the middle part of the heat sink
> would help.
There is no substitute for getting both pieces machined flat and
finished with a low roughness surface. If they don't 'suck' like slip
guages when you use a very thin film of heatsink compound, they're not
flat enough.
Anything else will put your expensive transistors at risk.
Steve
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|