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Old 19th April 2012, 08:19 PM   #81
Malquis is offline Malquis  Argentina
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thanks Anonymous; really nice electronico maybe I'll try that schematic later I think mine isn't working because of the difference that I have in the + and - rails one side measures -4.5V and the plus is +5.4 V that's because of the bad quality resistors that I have used in the virtual grounding circuit the same happened to me with this 5ch adder + switched capacitor filter
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File Type: jpg 5chadd2.jpg (71.5 KB, 187 views)
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Old 20th April 2012, 02:46 AM   #82
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Originally Posted by Malquis View Post
thanks Anonymous; really nice electronico maybe I'll try that schematic later I think mine isn't working because of the difference that I have in the + and - rails one side measures -4.5V and the plus is +5.4 V that's because of the bad quality resistors that I have used in the virtual grounding circuit the same happened to me with this 5ch adder + switched capacitor filter
Try to use a buffer ,also you could change the resistor value to >10k.
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Old 9th November 2012, 03:46 AM   #83
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This is my amp , tpa3122 stereo mode.
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File Type: jpg tpa3122_pcb1_717x600.jpg (58.8 KB, 147 views)
File Type: jpg tpa3122_pcb2_660x600.jpg (58.2 KB, 140 views)
File Type: jpg tpa3122_pcb3_606x600.jpg (57.2 KB, 124 views)
File Type: jpg tpa3122_pcb7_645x600.jpg (55.7 KB, 56 views)
File Type: jpg tpa3122_pcb8_743x600.jpg (68.5 KB, 60 views)
File Type: jpg tpa3122_pcb9_690x600.jpg (66.8 KB, 56 views)
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Old 9th November 2012, 04:25 AM   #84
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Nice boards!

I have to ask though, why go through the trouble of getting professional boards done for this IC when it has superior bigger brothers?
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Old 12th November 2012, 11:35 PM   #85
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Nice boards!

I have to ask though, why go through the trouble of getting professional boards done for this IC when it has superior bigger brothers?
Hi

That was because I own some ics and its easy to get them.
Im working with other amps.

regards!
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Old 28th February 2013, 03:46 PM   #86
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This is the BTL mode pcb

pics atacched
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File Type: jpg tpa3122_btl_1.jpg (919.9 KB, 41 views)
File Type: jpg tpa3122_btl_2.jpg (503.8 KB, 40 views)
File Type: jpg tpa3122_btl_4.jpg (677.4 KB, 28 views)
File Type: jpg tpa3122_btl_5.jpg (544.0 KB, 20 views)
File Type: jpg tpa3122_btl_6.jpg (404.9 KB, 17 views)
File Type: jpg tpa3122_btl_9.jpg (499.2 KB, 30 views)
File Type: jpg tpa3122_btl_7.jpg (390.9 KB, 37 views)
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Old 28th February 2013, 08:27 PM   #87
Malquis is offline Malquis  Argentina
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Hi there ! Big love for that IC is what you are feeling huh lol ! you've dedicated some time one could say how does that BTL sound ? you could fusion that stereo board with the BTL one and make some nice 2.1 amps and sell them as kits lots of people like building with 2 tweets 2 mids and just one sub altough I don't think that little ic can push 40 watts you should measure that on a scope nice work ! cheers !!
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