🔊 Amplificatore 60+60W: test potenza e verità

In this video, we take a deep dive into a stereo audio amplifier board based on the STK4021 module (Sanyo clone). We'll explore the technical specifications, the differences between amplification classes (A, B, AB, D), and put the board to the test using an oscilloscope and thermal camera to see if it truly delivers the claimed 60+60W. What you'll learn in this video: Introduction to amplifier classes. Analysis of the speaker protection circuit (IC 1237). Power testing on both 8-ohm and 4-ohm loads. Thermal analysis of components under stress. Practical tips for board upgrades (capacitors and resistors). Video Chapters 00:00 Introduction and board overview 00:45 Amplifier classes: A, B, AB, and D explained 04:05 Component analysis and 1237 protection circuit 05:33 Technical specs and recommended voltages 08:15 Power-on test and relay delay 10:55 Setup for power testing (resistive load) 12:10 8-ohm power test and clipping analysis 14:40 Thermal analysis with thermal camera (8-ohm) 15:52 Testing the second channel 17:21 Extreme power test on 4-ohm 19:43 Recommended upgrades and final thoughts