Single-Transistor Audio Amplifier - How the Common Emitter Amplifier Works
I demonstrate how to make an audio amplifier with a single transistor on a breadboard, which is capable of running a 8 Ohm loudspeaker. The amplifier is a common emitter amplifier, which is a class A amplifier. I will show the circuit diagram, explain how it works, and show how to build it on a solderless breadboard. In the end of the video, we will listen to the tone from an audio oscillator, amplified using this audio amplifier. The NPN-transistor used is BC547. BC547 Audio Amplifier BC547b Audio Amplifier Simple Amplifier Useful references, showing how to calculate the optimal resistance values: • EECE 251 - BJT Design of the Bias Circuit • EECE 251 - BJT Tutorial A (optimum Q point) #miniaudioamplifier #amplifier #amplifiermini #amplifiermaking
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