To download mp3 (audio): Click "Download mp3" button
To Cut/Crop mp3: Please use the slider below and click on "Download mp3" button to download the selected part.
Note that video to mp3 conversion output is limited to 10 minutes.
This 3D animation in English explains the inner workings of a bipolar transistor with base, collector, and emitter. Transistors are semiconductor devices that amplify and switch electronic power and signals.