LM386 is a very popular low voltage audio amplifier IC, many hobby users like this IC because it needs only few external parts and it gives good sound output for small speaker projects. In this Easy DIY LM386 Audio Amplifier Circuit, we explain two simple amplifier circuits using LM386 IC, the first circuit gives around […]
Audio Circuits
Multi-Purpose Audio Preamplifier Circuit using IC TL072
This Multi-Purpose Audio Preamplifier Circuit using IC TL072 is a simple and useful audio amplifier circuit; also, we can use this circuit for microphone signals, AUX audio signals, guitar pickups, music players and other low-level audio sources. Furthermore, the circuit increases weak audio signals to higher level output signals and therefore, the output can drive […]
AF Signal Preamplifier Circuit with LM741 IC
This AF Signal Preamplifier Circuit with LM741 IC operational amplifier which boost very weak audio signal to strong level; also it uses single 12V power supply. Furthermore, this preamp circuit work for microphone, AF input, audio player low output and weak signal source. We can use LM741 IC because it is cheap and easily available […]
Simple LM324 Microphone Amplifier Circuit
Over the past 56 years, operational amplifiers have changed electronics design in a big way and before that time, designers built amplifiers with many separate transistors and extra components and later, companies released op amp ICs that made amplifier circuits smaller, cheaper and easier to build. Furthermore, this project uses the popular LM324 operational amplifier […]
DIY 20W OCL Audio Amplifier Circuit
To begin with, a 20W OCL power amplifier circuit gives strong and clear audio output for home speaker systems, computer speakers and small music systems. Also, this circuit uses TDA2020 audio amplifier IC which can produce good sound quality with low distortion. Moreover, the circuit needs only few external components, so construction becomes easy for […]
Simple High Impedance JFET Preamp Circuit
Like our previous post on low and medium impedance preamplifier circuits, this tutorial shows a simple JFET preamp circuit that gives very high input impedance. The circuit works good with weak signal sources like microphone, guitar pickup or sensor and also it uses a N-channel JFET 2N5457. This Simple High Impedance JFET Preamp Circuit is […]