Just as the name implies, a simple single transistor audio amplifier circuit is a basic circuit that uses just one transistor to increase the amplitude of an audio stream. It is an excellent introduction to the principles of amplification and how transistors operate. Do you want to assemble a simple audio amplifier without a complicated […]
Transistor Circuits
Simple Solar Garden Light Circuit using One Transistor
This solar garden light circuit uses just one special switch a transistor and the power of the sun to light up an LED at night. It works like magic when the sun goes down, the light automatically turns on and when the sun comes back up the light turns off. Circuit Working: Parts List: Category […]
PWM Motor Speed Control Circuit using Two Transistors
Resistors are helpful for many things, but they are not the best choice for changing motor speed smoothly. That is where a clever circuit with just two transistors comes in. This circuit acts like a fancy dimmer switch for your motor. By turning a knob called a potentiometer, you control the power going to the […]
Simple Microphone Preamplifier Circuit using Two Transistors
Just imagine your voice is like a tiny whisper when it enters a microphone. This microphone preamp circuit made with just two transistors, is like a small megaphone. It boosts that whisper into a much stronger signal before it goes to the main amplifier making your voice loud and clear. Circuit Working: Parts List: Component […]
Simple Transistor Tester Circuit
Transistors are tiny electronic switches, but how do you know if yours are working or which kind they are? This tester circuit is like a fortune teller for transistors. It is a simple DIY project that uses just a few common parts to check if your transistor is alive and tell you if it is […]
Simplest Two Transistors Amplifier Circuit using 1.5V Battery
This circuit is like a megaphone for tiny sounds. It uses just two transistors like tiny electronic switches and a 1.5V battery to boost a faint signal making it much louder. This is a basic way to build a mini amplifier for simple projects, like listening to music a little bit better. Circuit Working: Parts […]