DIY Portable HiFi Amplifier (2x30w, Class AB)
DIY Portable HiFi Amplifier (2x30w, Class AB)
DIY Portable HiFi Amplifier (2x30w, Class AB)
DIY Portable HiFi Amplifier (2x30w, Class AB)
DIY Portable HiFi Amplifier (2x30w, Class AB)
DIY Portable HiFi Amplifier (2x30w, Class AB)
DIY Portable HiFi Amplifier (2x30w, Class AB)
I've made a portable amplifier that uses a TDA7394 as its main IC chip. It's a Class-T amplifier look alike. There's also a hidden (internal) tone control circuit built with it. I posted it to inspire most of the people who asks me about making a "Class-T" amplifier, so I thought of making a Class AB-A amplifier instead. A Class AB amplifier has a fully symmetrical structure, this mean the sine waves (electric pulses) produces a + and - output.

Too bad I had a late documentation, that's why I only have a few pictures of the steps and procedures. If I make another one, I'l promise to fully document my amplifier as a step-by-step instructable.

My version works well with any wall wart, with a rating of: 12-28 volts, 1-5 Amperes, Switching-Transformer type.
I've also provided a schematic diagram of the amplifier.

I hope you like it !
 
 

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