Build Your Own Class AB Audio Amplifier:
[Dino Segovis] wrote in to tell us about his “hack”, making an AB Audio Amplifier. The advantage of this particular amp is that the transistors never turn off, which would cause distortion. A full schematic is given in the article as well as a parts list. A complete “bill of materials” makes any circuit building project easier, especially for the beginner.
Although this is by no means a new circuit design, (a similar setup is used in car audio equipment) [Dino] does a great job of explaining how things work in the article itself and in the video after the break. He also gives some great tips about transferring your drawn circuit to a breadboard in a neat and organized way at around 5:00 in the video.
[Dino] tries to come up with something like this every week, so be sure to check back on his aptly-named site, Hackaweek.com for more fun stuff like this. Also, he mentions using the “free music archive” for his videos. This looks like a good resource for those that want to make other videos like this and need some music that legally doesn’t have to be paid for.
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