Awesome Electronics Tutorials, Projects and How To´s
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GreatScott! · Published February 14, 2021
$2 for 4-Layer PCBs: https://jlcpcb.com Previous video: https://youtu.be/8u4izLA-SCo Transistor (BJT) as a Switch video: https://youtu.be/WRm2oUw4owE Low Budget Bluetooth Music System video: https://youtu.be/oGTXczCV30A Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h More project information (schematic,.....) on Instructables: https://www.instructables.com/Building-the-Simplest-Best-Sounding-Yet-Most-Ineff/ Parts list (affiliate links): 2x BC337 NPN BJT: https://s.click.aliexpress.com/e/_9I1F1z 2x 100Ω, 2x 22Ω, 2x 3.3kΩ, 2x 1kΩ Resistor: https://s.click.aliexpress.com/e/_dTPpXjt 4x 10µF Capacitor: https://s.click.aliexpress.com/e/_d7dOwRz 1x USB Type-C breakout board: https://s.click.aliexpress.com/e/_AonKUJ 1x Audio jack: https://s.click.aliexpress.com/e/_9IfcXd 1x Audio plug: https://s.click.aliexpress.com/e/_ABC7UL 1x Perfboard: https://s.click.aliexpress.com/e/_A5V4B5 Useful sites which were partly shown in the video: https://www.electronics-lab.com/article/class-a-amplifiers/ https://learnabout-electronics.org/Amplifiers/amplifiers21.php https://learnabout-electronics.org/Amplifiers/amplifiers20.php https://www.tutorialspoint.com/amplifiers/class_a_power_amplifiers.htm https://www.electronics-tutorials.ws/amplifier/amplifier-classes.html https://www.electronics-tutorials.ws/amplifier/amp_5.html In this project I will be showing you how to create a class A audio amp. The great thing about such amps is that they only require a few components and sound awesome. On the other hand though, their efficiency is not that great. But since I will be creating this amp for a smartphone with a USB Type-C port for powering the amp, it should be just fine. So let me show you how to calculate a design for such an amp and how to build it! Let's get started! Thanks to JLCPCB for sponsoring this video. Visit https://jlcpcb.com to get professional PCBs for low prices. Music: 2011 Lookalike by Bartlebeats 0:00 Why I want to build a class A audio amp 1:02 Intro 1:39 General circuit design 3:03 Closer look at the Base Input side 4:24 Comparison of class A, B & AB amplifiers 5:30 Closer look at the Collector Output side 6:23 Selecting the complementary components 8:34 Extra Information about class A amps 9:05 Modifying a USB Type-C board to get 5V 9:53 Practical build & End
