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Chip Amps Amplifiers based on integrated circuits

10W amp help
10W amp help
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Old 13th April 2012, 06:03 AM   #1
Dprasad97 is offline Dprasad97
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Join Date: Feb 2012
Unhappy 10W amp help

Hi there, I have revised a schematic of a dual channel 10w amp that I had found on another forum. If anyone has used the TDA2003 before, may you please see if everything looks to be correct. I have attached the eagle file, parts list and jpeg of the schematic.

My purpose of this is to drive speakers that will be connected, to a fm receiver that i assembled, and at times to my computer and iPad. If you know of any other simple 10w amps please post below

The eagle file is here 10watt 2 channel amp deven prasad.sch
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File Type: png dual ch 2 10w amp.png (18.8 KB, 132 views)
File Type: jpg Image.jpg (267.7 KB, 129 views)
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Old 13th April 2012, 08:15 AM   #2
sofaspud is offline sofaspud  United States
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Location: San Antonio
This is identical to the application circuit found in the ST datasheet. With the addition of a stereo potentiometer connected in series with the speakers. I don't think you want the volume control on the output, but on the input instead. Actually, it may not even be necessary at all since the iPad and computer have their own volume controls, and the radio receiver probably has one too.
It is error only, and not truth, that shrinks from enquiry. - Thomas Paine
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Old 13th April 2012, 01:37 PM   #3
fooboo is offline fooboo  United Kingdom
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What Sofaspud said. Put the volume pot at the input. I've built this version myself a few times and it does the job admirably.

You may also consider a bridged TDA2003 circuit. I have built this one also and it is very good for general use.

Please the see the attached images. They may be useful to you.


Attached Images
File Type: png TDA2003_Single.png (82.6 KB, 101 views)
File Type: png TDA2003_Bridged.png (127.5 KB, 101 views)
Windows Vista Sir?
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