Andy recommends favorite resources for basic op amp circuits and includes a portion of TI's AN-20. Test your knowledge with ...

This miniature audio amplifier delivers up to 250mW and can be used like a final stage audio amplifier for radio sets. The schematic is very simple: one BC547 transistor controls a balanced power ...

Explore the fascinating world of audio amplifiers with our hands-on experiments that you can easily try at home! This video guides you through the science of amplifying sound, explains essential ...

As we’ve followed a trail through Hi-Fi and audio systems from the listener’s ear towards the music source, we’ve reached the amplifier. In our previous article we gave a first in… ...

[Part 1 covers the basics of bipolar junction transistors and looks at some typical BJT audio circuit configurations.] 9.7 Junction Field Effect Transistors (JFETs) JFETs are, almost invariably, ...

During normal operation, the incoming audio signal sees little attenuation by the diode network, and the high input impedance of U1 prevents attenuation due to the higher source impedance.