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Old 4th October 2011, 09:57 PM   #241
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Location: Recife - Brasil Northeast
Default A friend from other forum told me these heatsinks

are presenting 52 degrées Celsius (Centigrades)... this is too much hot.... better if you can keep these ones at 45 to 47 degrées.

A taller, or bigger heatsink will be needed for him to cool down these two transistors mounted in separated heatsinks.... they are lovely but small, not that tall as i was dreaming for.

The guys is using 68 volts supplies...... and the higher the supply voltage the bigger will be the problem related these heatsinks.

In my construction, home prototypes using standard supply voltage, i have not noticed heat there because these transistors where mounted into the main heatsink...but seems you may face some trouble because heat there.

Be aware you may have to replace these heatsinks for larger ones.

regards,

Carlos
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Old 15th December 2011, 10:47 PM   #242
BMW850 is offline BMW850  Netherlands
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Hmmm, I have ordered last week those heat sinks.
I read this to late, then I not ordered these heat sinks ...

Regards,
Rudy
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Old 28th January 2012, 04:17 PM   #243
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Hi!
Are the boards still available?

Thanks!
Best Regards!
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Old 29th January 2012, 12:31 AM   #244
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Quote:
Originally Posted by Mario_JR View Post
Hi!
Are the boards still available?

Thanks!
Best Regards!
Be patience there will be a second groupsbuy with a slightly different board.I'm still working on it
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Old 29th January 2012, 12:32 AM   #245
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Quote:
Originally Posted by meanman1964 View Post
Be patience there will be a second groupsbuy with a slightly different board.I'm still working on it
Great!

Thanks
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Old 16th February 2012, 08:45 AM   #246
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Quote:
Originally Posted by meanman1964 View Post
Be patience there will be a second groupsbuy with a slightly different board.I'm still working on it
Hi there!

Ive already written in the diysmps yesterday. Im wondering when do you think the new boards will be finished and will they have 4 or 5 transistors?


Thanks!

/GM
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Old 18th February 2012, 08:33 AM   #247
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New board layout is done need a final check up first and maybe some tuning.I will post a pic of the new board this weekend I hope you all like it
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Old 5th December 2012, 12:05 AM   #248
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Quote:
Originally Posted by destroyer X View Post
May give me one as a gift.

Ahahahahahaha.

regards,

Carlos
Boa noite Carlos.
Você tem os arquivos desse amplificador (esquema e layout)?
Se tiver e puder me enviar, fico agradecido.
Um abraço e obrigado.

translation by modeartion
and email removed, please use PM in public

Charles Goodnight.
Do you have files that amp (schematic and layout)?
And if you can send me, I'm grateful.
A hug and thanks.
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