Here this circuit is based on the principle of audio amplification using operational amplifier and pulse width modulation using 555 Timer. In this article we are describing the principle, design and ...

This simple 4093-based audio peak detector from December 2004 monitors music and turns on a small light when the sound gets ...

[Alan’s] friend came to him with a problem. He loved listening to his scanner, but hated the volume differences between stations. Some transmitters would be very low volume, others would nearly blow ...

The audio-signal router in this Design Idea can automatically redirect cable connections between the audio equipment and an amplifier/receiver for dubbing or playback purposes without causing ...

Over the past 20 years, the audio services that telcos supply to broadcasters have migrated from balanced analog copper circuits to digital solutions based on synchronous E1 and T1 networks. The next ...

[Alan’s] friend came to him with a problem. He loved listening to his scanner, but hated the volume differences between stations. Some transmitters would be very low volume, others would nearly blow ...

One big factor in avoiding the pickup of power line hum in audio circuits is to keep audio cables away from any power lines, cables or circuits (most notably power transformers). Use good cable ...