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I returned to DIY electronics in 2009 after a 20 year pause by building a few kits to get in shape. This blog is for me to keep track of my progress.
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NE5532 power amplifier

Posted 12th May 2013 at 07:51 PM by alexcp (My DIY projects)

This is a project developed by Douglas Self and published in the Elektor in October and November 2010.

The idea is rather unusual: "An interesting power amplifier can be made by connecting enough 5532s in parallel, how about 32 for a start? This may sound like a radical course of action, but it actually works very well, making it possible to build a very simple amplifier that retains not only the excellent linearity but also the power-supply rejection and the inbuilt overload protection of the 5532, which reduces the external circuitry required to a minimum."

Elektor used to sell PCBs for this project, which I used. I modified the circuit slightly to incorporate an active volume control along the lines of Douglas Self's preamplifiers.

Here is the result:
Attached Thumbnails
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Name:	NE553201.jpg
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Name:	NE553202.jpg
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Name:	NE553203.jpg
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ID:	1047   Click image for larger version

Name:	NE553204.jpg
Views:	464
Size:	205.0 KB
ID:	1048   Click image for larger version

Name:	NE553205.jpg
Views:	984
Size:	246.3 KB
ID:	1049  

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Name:	NE553206.jpg
Views:	1547
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ID:	1050   Click image for larger version

Name:	NE553207.jpg
Views:	383
Size:	203.0 KB
ID:	1051   Click image for larger version

Name:	NE553208.jpg
Views:	762
Size:	227.1 KB
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Name:	NE553209.jpg
Views:	217
Size:	236.5 KB
ID:	1053   Click image for larger version

Name:	NE553210.jpg
Views:	1368
Size:	253.3 KB
ID:	1054  

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