group buy for DX Blame MKIII Hx PCBs - Page 25

destroyer X · 4th October 2011, 09:57 PM

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

BMW850 · 15th December 2011, 10:47 PM

Hmmm, I have ordered last week those heat sinks.
I read this to late, then I not ordered these heat sinks ...

Regards,
Rudy

Mario_JR · 28th January 2012, 04:17 PM

Hi!
Are the boards still available?

Thanks!
Best Regards!

meanman1964 · 29th January 2012, 12:31 AM

Quote:

Originally Posted by Mario_JR

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

Mario_JR · 29th January 2012, 12:32 AM

Quote:

Originally Posted by meanman1964

Be patience there will be a second groupsbuy with a slightly different board.I'm still working on it

Great!

Thanks

McDaisy · 16th February 2012, 08:45 AM

Quote:

Originally Posted by meanman1964

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

meanman1964 · 18th February 2012, 08:33 AM

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

15th December 2011, 10:47 PM	#242
BMW850 diyAudio Member Join Date: Aug 2004 Location: North East of the Netherlands	Hmmm, I have ordered last week those heat sinks. I read this to late, then I not ordered these heat sinks ... Regards, Rudy __________________ It’s not what you know, but who you know “and where they are”

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28th January 2012, 04:17 PM	#243
Mario_JR diyAudio Member Join Date: Jan 2005 Location: Sao Paulo	Hi! Are the boards still available? Thanks! Best Regards!

18th February 2012, 08:33 AM	#247
meanman1964 diyAudio Member Join Date: Oct 2006 Location: Belgium the land of chocolate	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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