LM4910 IC is special chip, it makes stereo headphone sound good by using a very low power, also the circuit is useful for small devices like MP3, phone, battery gadgets. Furthermore, it work on low voltage to around 3.3V and has shutdown mode to save power. This article for Simple Stereo Headphone Amplifier Circuit using […]
Audio Circuits
Dynamic Microphone Preamplifier Circuit using IC uA739
Dynamic microphones are strong, last long and work well with loud sounds, so people use them a lot in sound systems and recording, but their signal is weak. So they need a preamp to make sound stronger. This Dynamic Microphone Preamplifier Circuit using IC uA739 is a preamp for dynamic mics, as it uses µA739 […]
Active Crossover Circuit using IC LM324
To begin with, a Active Crossover Circuit using IC LM324 is an important project for audio, as it split audio signal into parts like low, mid and high. Each part go to right speaker with woofer for bass and tweeter for high, also this make sound better and system works well. People widely use the […]
Sound Pressure Level Meter Circuit using IC CA3140
Sound Pressure Level Meter Circuit using IC CA3140 is device to check how loud sound is in one place, also it shows sound level with visuals. Furthermore, the circuit is useful for audio testing, noise check and sound work and it shows simple way to make it using condenser mic, op-amp and FSD meter for […]
12 Watts Amplifier Circuit using Transistors
12 Watts Amplifier Circuit using Transistors make sound louder in audio systems and this 12W amplifier uses op-amp with NPN and PNP transistors. Thus, it gives strong output for 4 ohm speaker. Also, this circuit is good for audio lovers and boost weak sound to loud, which is clear and with good quality. Circuit Working: […]
Simple Arduino FM Receiver Circuit
This project uses Arduino Uno to make Simple Arduino FM Receiver Circuit and its main part is RDA5807M FM radio module. It get FM signal and changes to audio sound and this sound goes through 7809 IC to make louder and then comes out from 3.5mm audio jack. We can also listen FM stations and […]