12 Watts Amplifier Circuit using Transistors make sound louder in audio systems. 12W amplifier uses op-amp with NPN and PNP transistors. It gives strong output for 4 ohm speaker. This circuit is good for audio lovers and boost weak sound to loud, which is clear and with good quality. Circuit Working: Parts List: Component Specification […]
Transistor Circuits
Simple 555 Timer Based Transistor Tester Circuit
Transistors are very important in electronics. They make signals strong and turn things ON/OFF and do many jobs. To check if its good then we need to test them. Testing helps find problems and broken parts. This article for Simple 555 Timer Based Transistor Tester Circuit show easy way to test transistors with 555 timer […]
Building an Auto Street Light Circuit using IC 741 and Transistor
This post talks about Building an Auto Street Light Circuit using IC 741 and Transistor. It turns ON at night and OFF at day. This circuit is simple and saves energy. It uses relay to control light, LDR to sense light, BC547 transistor drives relay and IC 741 works as a comparator. It is an […]
Simple Transistor-Based Voltage Booster Circuit
In many electronics low voltage is not enough but need only higher voltage. Voltage booster circuit helps, take low voltage and makes it higher. This project for Simple Transistor-Based Voltage Booster Circuit show how to make voltage booster using simple parts like: PNP transistor 2N2907, NPN transistor 2N2222, resistors, capacitor, diode, inductor. It takes 3V […]
Single Push Button ON OFF Relay Circuit
We can make Single Push Button ON OFF Relay Circuit with one push button to control motor or light. Press button and relay will turn ON. Press again and relay will turn OFF. No need of microcontroller or timer IC. Use only some transistors and one capacitor. Circuit Working: Parts List: Component Type Description Quantity […]
100 Watt Audio Amplifier Circuit using Transistors
This 100 Watt Audio Amplifier Circuit using Transistors make sound loud. It uses transistors to give 100 Watt power to speaker. Input is small audio signal in which circuit boost and drive big speaker. Circuit is good for music system, home theater and for party sound. Circuit Working: Parts List: Category Description Quantity Resistors (All […]