Salas hotrodded blue DCB1 build - Page 134 - diyAudio
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Old 7th September 2011, 04:38 PM   #1331
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Hi

Can somebody validate the balanced wiring on Tea bag's blog. It appears to be different from the one posted in #1321. It seems to be missing a wire on the left channel input. Furthermore, it indicates both boards as being for the left channel.

regards.
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Old 7th September 2011, 04:59 PM   #1332
Salas is online now Salas  Greece
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Quote:
Originally Posted by johnwmclean View Post

Thanks Salas for a great project!
Some final pics for entertainment
You are welcome. Looks like a fine build indeed. Happy listening!
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Old 7th September 2011, 07:54 PM   #1333
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Quote:
Originally Posted by necplusultra View Post
Hi

Can somebody validate the balanced wiring on Tea bag's blog. It appears to be different from the one posted in #1321. It seems to be missing a wire on the left channel input. Furthermore, it indicates both boards as being for the left channel.

regards.
necplusultra thank you!

This is now corrected see attached;

Tea-Bag please update the diagram to the attached.
Attached Images
File Type: jpg DCB1 Wiring Scheme.jpg (121.3 KB, 481 views)

Last edited by johnwmclean; 7th September 2011 at 07:59 PM.
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Old 7th September 2011, 09:43 PM   #1334
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Is that 0V GND from power supply that is grounded to chasis from both boards?
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Old 8th September 2011, 07:36 AM   #1335
syklab is offline syklab  Hong Kong
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Hi Tea-bag,
Is the transformer rated at 50VA with 2x15V output sufficient for a stage 2 600ma hot rod?

Thanks
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Old 8th September 2011, 09:19 AM   #1336
AndrewT is offline AndrewT  Scotland
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I reckon from the transformer Manufacturers' data that an 50VA 15+15Vac transformer has a maximum continuous DC output current of ~830mAdc.

Running a 50VA transformer continuously at ~72% of maximum rating is asking a lot. It will work, it will run warm and even warmer if Ta is high.

I prefer to recommend that continuous DC current be <=50% of maximum continuous rating.
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regards Andrew T.
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Old 8th September 2011, 10:18 AM   #1337
syklab is offline syklab  Hong Kong
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Quote:
Originally Posted by AndrewT View Post
I reckon from the transformer Manufacturers' data that an 50VA 15+15Vac transformer has a maximum continuous DC output current of ~830mAdc.

Running a 50VA transformer continuously at ~72% of maximum rating is asking a lot. It will work, it will run warm and even warmer if Ta is high.

I prefer to recommend that continuous DC current be <=50% of maximum continuous rating.
Hi Andrew,
It will be better to use one with 100VA and run cooler.

Thanks
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Old 8th September 2011, 10:53 AM   #1338
qusp is offline qusp  Australia
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is this really the correct usage of balanced?
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Old 8th September 2011, 12:26 PM   #1339
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Quote:
Originally Posted by AndrewT View Post
I reckon from the transformer Manufacturers' data that an 50VA 15+15Vac transformer has a maximum continuous DC output current of ~830mAdc.

Running a 50VA transformer continuously at ~72% of maximum rating is asking a lot. It will work, it will run warm and even warmer if Ta is high.

I prefer to recommend that continuous DC current be <=50% of maximum continuous rating.
Andrew for typical 50VA single secondary 15V winding ~1.6A, does one typically half that value to calculate continuous DC output current for ~830mAdc?
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Old 8th September 2011, 12:28 PM   #1340
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Originally Posted by qusp View Post
is this really the correct usage of balanced?
Not a fan? Well the Buff32 may be better straight into the F5X, but Iím going to give this a crack and see what becomes...
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