Updated May 3. 2006

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DIY Self Oscillating Class-D Amplifier (SODA)

Breadboard

Diagram

Se here for the diagram of the class-d amplifier in pdf.

Or  press the thumbnail (jpg)

Part I, Bread board muck-up

So far I have only driven the construction from a 16 V PSU, and only on the breadboard. The sound seems ok, but it suffers from a high level of broadband noise.

I guess this is to be expected, and very much hope this will disappear when build on a real two layer PCB.

Here is a measurement on the output before the filter. The switching frequency is around 180 kHz (a x10 probe is used).