Name say it, this is very Simple Single Transistor Audio Amplifier Circuit. It make sound signal bigger means amplify. Good to learn how transistor work and how amplification happen. Want to build easy audio amplifier? No need of many parts? This one transistor circuit is good choice! It uses common parts like resistor, capacitor and […]
Transistor Circuits
Simple Solar Garden Light Circuit using One Transistor
Simple Solar Garden Light Circuit using One Transistor, one special switch and a sun power to turn on LED at night. When sun goes down the light turns ON by itself. And when sun come back the light turns OFF, like a magic! Circuit Working: Parts List: Category Description Quantity Resistors 1k, 47Ω, 470Ω (1/4 […]
PWM Motor Speed Control Circuit using Two Transistors
Resistors can help in some ways but they are not good for smoothly changing motor speed. That is why a smart PWM Motor Speed Control Circuit using Two Transistors is used. It works like a dimmer switch for the motor. We turn a knob like a potentiometer to change how much power the transistors get. […]
Microphone Preamplifier Circuit using Two Transistors
Imagine our voice is a tiny whisper going into a microphone. This Microphone Preamplifier Circuit using Two Transistors works like a small megaphone. It makes the whisper louder so the main amplifier can clearly boost our voice. Circuit Working: Parts List: Component Type Description Quantity Resistors(All resistors are 1/4 watt unless specified) 100k 1 120k […]
Simple Transistor Tester Circuit
Transistors are small switches. But how to check if they work or what type they are? This Simple Transistor Tester Circuit is like a transistor checker. It is an easy DIY project which uses few parts. It tells us if transistor is good or bad and also shows if its NPN or PNP like two […]
Simple Two Transistors Amplifier Circuit using 1.5V Battery
This Simple Two Transistors Amplifier Circuit using 1.5V Battery works like loudspeaker for small sounds. It uses 2 small parts called transistors and 1.5V battery to make weak sound strong. It is simple mini amplifier which are good for small projects for making music sound better. Circuit Working: Parts List: Category Item Quantity Resistors (All […]