[hpsdr] Munin heat sink and spreader

[AA8K73 GMail]

Ah, excellent idea Helmut.  Thank you.

On 10/10/2013 07:13 AM, Helmut, DC6NY wrote:
> Hi Mike,
>
> you are right with 'Wiedemann-Franz'. That's the reason why I no longer use
> this standard thermal conductance paste. Between the final transistors and
> the copper spreader a liquid silver emulsion works fine. Between the copper
> spreader and the heat sink I got good results with liquid copper used e.g.in
> the repair engine blocks. Perhaps
> http://www.polymermetal.com/downloads/tec/e_tec_016.pdf can help.
>
> 73, Helmut, DC6NY
>
>
> -----Ursprüngliche Nachricht-----
> Von: hpsdr-bounces at lists.openhpsdr.org
> [mailto:hpsdr-bounces at lists.openhpsdr.org] Im Auftrag von AA8K73 GMail
> Gesendet: Donnerstag, 10. Oktober 2013 12:14
> An: HPSDR
> Betreff: Re: [hpsdr] Munin heat sink and spreader
>
> ***** High Performance Software Defined Radio Discussion List *****
>
>
> Thanks gentlemen.
>
> I was thinking of the metal particles providing the thermal conductivity
> (Wiedemann–Franz law), but I suspect that the per cent of contact area is
> small.
>

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