Subwoofer Amplifier Circuit using IC TDA7294 is to boost low bass sound for subwoofer speaker. The IC is an audio amplifier chip. TDA7294 is one-chip IC in multiwatt 15 package. It is good for powered speakers, home stereo and big TVs. It work as class AB amplifier for Hi-Fi sound. Circuit Working: Parts List: Category […]
Simple Single Transistor Audio Amplifier Circuit
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 […]
40 Watt Audio Amplifier Circuit
40 Watt Audio Amplifier Circuit makes small sound signal big so sound come out loud from speaker. We can hear music or audio more loud with this. Main part is TDA2040 IC which is used in this easy circuit. This IC is single chip in pentawatt case and works as class AB audio amplifier. Circuit […]
Simple 5W Audio Power Amplifier Circuit
In this post for Simple 5W Audio Power Amplifier Circuit IC LM384 is strong amplifier chip used in basic electronics. Chip has fixed volume gain of 34 dB to make it cheap. Mic can connect easy to ground that make chip special. If chip get too hot it reduce power by itself. It also handle […]
Simple MIC Amplifier Circuit using IC LM358
Microphones can hear sound but the signal is very weak. Then this Simple MIC Amplifier Circuit using IC LM358 make signal strong. LM358 chip is cheap, easy and can work with two mic signals so people use it a lot. Audio amplifiers take weak sound signals from mic or music player and make them strong […]
Automatic Staircase Light Circuit
Automatic Staircase Light Circuit turn ON light when someone uses stairs. After some time it turn OFF by itself automatically. It help keep home safe and saves electricity. Circuit Introduction: Regular stair lights: Need to turn ON/OFF by hand using switches at top and bottom. Sometimes people forget to turn OFF, so energy gets wasted. […]