This article shows you how to build a microphone amplifier circuit using a chip called the IC LM358. Regular microphones have very weak signals, and this amplifier makes them much stronger. This circuit is better than simpler designs because it uses a special chip called an operational amplifier op amp. This makes the signal stronger […]
Amplifier Circuits
Simple IC 555 Amplifier Circuit
The IC 555 chip is super useful for many things. Normally it is used for timing circuits, but this project is a bit different. In this experiment, we are going to use the IC 555 to make a microphone amplifier. First, a microphone picks up your voice. Then, a transistor like a tiny switch gives […]
Building a 1-Watt Hi-Fi Amplifier Circuit
Big bulky speakers are a thing of the past for sound systems. Today, most systems use a special part called a complementary output stage to make them smaller and work better. This article will take a look inside a small 1 watt amp and show you how it works, step by step. What is a […]