F5X -- the EUVL Approach - The Build Thread - Page 38 - diyAudio
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Old 20th January 2013, 10:54 AM   #371
NicMac is offline NicMac  Italy
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Thanks ashaw,
Now I'm getting closer to understanding
To where does the SENSE1, SENSE2 and TRP RST headers connect?
Cheers,
Nic
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Old 20th January 2013, 11:02 AM   #372
ashaw is offline ashaw  Australia
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the Sense connections go across the amplifier outputs in parallel with the speaker terminals. leave trip reset NC. SENSE1 across one channel and sense2 across the other. (they are the inputs to the DC sense amps ...)

make sure that there is a diode across all relays to stop inductive spikes, these are not on board, and should be at the relay to stop EMI.

Last edited by ashaw; 20th January 2013 at 11:09 AM.
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Old 20th January 2013, 11:13 AM   #373
heinz1 is offline heinz1  Europe
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Quote:
Originally Posted by NicMac View Post
Also a picture of the recommended jumpers for a default F5X would be greatly appreciated.
Quote:
Originally Posted by ashaw View Post
The connectors that this board is designed to use, if you mant them are 4 way Molex Microblade connectors.
Alexis, you specified the Molex connectors already in one of your GB BOMs as Digikey WM18981-ND.

But the part Nic was asking for (as I understand) were the jumper headers in the field(s) in which you were placing the red lines in your last .pdf-file. Would a part like this be suitable, or is any breakable single-row 40 pin header with 2,54mm pitch good enough for that purpose?
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Old 20th January 2013, 11:51 AM   #374
ashaw is offline ashaw  Australia
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for the red lines I gust used solid core wire, 0.6mm (the type that you use on a solderless breadboard). however anything that solders and fits in the hole should do, just keep it tidy.

to test I did however use 100mil headers like that, if you use configuration jumpers it makes configuration quite easy.
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Old 20th January 2013, 11:57 AM   #375
heinz1 is offline heinz1  Europe
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ashaw, thanks for the clarification, highly appreciated!
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Old 21st January 2013, 07:32 AM   #376
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Hi Nic,

Fets received in good condition. Thanks.
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Old 21st January 2013, 07:47 AM   #377
NicMac is offline NicMac  Italy
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Good to hear
I will e-mail you the Vgs and Yfs data later today.
Nic
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Old 21st January 2013, 02:40 PM   #378
Horio is offline Horio  United States
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Dumb question, but what gauge wire do you guys recommend for the power supply -> amp boards, and amp boards -> speaker terminals? Is 16 awg stranded going to give enough headroom? That seems to be the max wire size for the terminal blocks on the filtering caps.
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Old 21st January 2013, 03:06 PM   #379
NicMac is offline NicMac  Italy
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I hope AWG16 is sufficient as this is what I'm using
By the way, for one amp 3 m in three different colors will just about do it.
I use stranded teflon sleeved silver/copper (from Alpha Wire) that a local reseller is offering cut to lenth.
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Old 21st January 2013, 03:09 PM   #380
EUVL is offline EUVL  Europe
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I would use 1.5mm2 minimum.
Of course for the real die-hard, you can drill out the PCB hole and direct solder.
You lose ease of maintenance and modularity though.

If anything, the connection from the last cap of CRC or CRegC (next) to the amp board is most important.
So keep them short also.


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