At 09:42 AM 8/28/01 -0500, you wrote:
>> >
>> >           (board) ----------------
>> >      (transistor)    *****
>> >       (heatsink)  ================
>>
>> Outstanding idea. I couple even mount the sink perpendicular
>> to the board
>> and have the transistors out on the edge.
>>
>
>Yes, whatever arrangement works for you. Let me just add that it is
>*significantly* easier to secure the heatsink to the board if they are
>sandwitched; all it takes is some screws and spacers.
>
..........


I'll bet if any sort of R-A vertical mount heat sink is used, the
motor vibrations will tear the whole thing apart - unless the heat
sink is "very" firmly attached. The flat pack/sandwich arrangement
sounds more robust for this app.

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