Introduction: 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 !