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My 40-Year Love Affair with a Remarkable Amplifier—A Class B Amplifier for Audiophiles

My 40-Year Love Affair with a Remarkable Amplifier—A Class B Amplifier for Audiophiles

The Blomley amplifier was designed over forty years ago, is an alternative power amplifier design that suffers virtually no distortion, and provides a sound which has the presence often lacking in conventional amplifiers.


Implementing Your Phase-Shift Oscillator: Frequency Response and Amplitude Stabilization

Implementing Your Phase-Shift Oscillator: Frequency Response and Amplitude Stabilization

This article, part of AAC’s Analog Circuit Collection, explores a handy circuit that can generate sustained sinusoidal oscillations.


Implementing an Electronic Leveling Tool

Implementing an Electronic Leveling Tool

While it can be challenging to design electronic versions of precision tools, in this Industry Article we design an electronic level that matches the features of a conventional tool.


Don’t Get Left Behind with Your Voice-Enabled Home Saying “I’m Sorry, I Didn’t Get That”

Don’t Get Left Behind with Your Voice-Enabled Home Saying “I’m Sorry, I Didn’t Get That”

There is a trend beginning for a whole new network of smart devices to listen and respond to requests for all rooms of your smart home so you don't have to hear "I'm sorry, I didn't get that" anymore.


Incorporating Microphone Functionality into a Robot System

Incorporating Microphone Functionality into a Robot System

In this article, we’ll look at a fairly straightforward circuit that enables a robot or other device to detect sound.


Projects Sep 11, 2017 by Robert Keim
Teardown Tuesday: Hi-Fi Audio Amplifier with Bluetooth

Teardown Tuesday: Hi-Fi Audio Amplifier with Bluetooth

In this teardown, we examine the Lepy LP-168 Hi-Fi Stereo USB Audio Amplifier with Bluetooth, by NKTECH.


News Aug 15, 2017 by Nick Davis
High Fidelity, Low Power: A New Audio Amplifier from Analog Devices

High Fidelity, Low Power: A New Audio Amplifier from Analog Devices

You can simplify and improve the performance of your audio circuits with amplifier ICs such as the SSM6322.


News Jun 21, 2017 by Robert Keim
Understanding and Eliminating 1/f Noise

Understanding and Eliminating 1/f Noise

This article defines 1/f noise and goes over ways to reduce or eliminate it in precision measurement applications.


An Introduction to Audio Electronics: Sound, Microphones, Speakers, and Amplifiers

An Introduction to Audio Electronics: Sound, Microphones, Speakers, and Amplifiers

Learn about the basics of audio electronics, which convert sound signals into electrical signals, process these electrical signals, and convert them back into sound.


Addressing Harmonic Distortion in Audio Amplifiers

Addressing Harmonic Distortion in Audio Amplifiers

Harmonic distortion can be introduced to audio amplifiers from many sources but reduced to levels below the threshold of human hearing.


Harmonics and THD in Audio Systems: Are You a Subjectivist or a Rationalist?

Harmonics and THD in Audio Systems: Are You a Subjectivist or a Rationalist?

THD of an audio system can be easily measured, but because the ultimate output of an audio system is a sound for humans to hear, human perception plays a role in determining what to do about THD.


Analyzing and Solving Fixed Frequency Spur Issues in High Precision ADC Signal Chains

Analyzing and Solving Fixed Frequency Spur Issues in High Precision ADC Signal Chains

This article will introduce approaches for determining the root causes of spur issues in high-resolution precision ADC applications and present solutions to solve them.


New Class D Amplifiers and a DSP for Your Audio Applications

New Class D Amplifiers and a DSP for Your Audio Applications

In this article we’ll look at three new components for amplifying and processing audio signals.


News Mar 10, 2017 by Robert Keim
Teardown Tuesday: Baofeng Amateur Radio Transceiver

Teardown Tuesday: Baofeng Amateur Radio Transceiver

This teardown looks at some of the circuitry inside Baofeng's dual-band handheld transceiver.


News Feb 28, 2017 by Mark Hughes
The Holiday Season Analog Alarm! A Gift-Defending System

The Holiday Season Analog Alarm! A Gift-Defending System

Nowhere to hide presents this holiday season? No problem! This alarm will sound anytime a loved one tries to get a sneak peek at his or her surprise.


Projects Dec 05, 2016 by Ryan Jones
Practical Filter Design Challenges and Considerations for Precision ADCs

Practical Filter Design Challenges and Considerations for Precision ADCs

Precision analog-to-digital converters can be tricky. Here are some pointers to get the most out of them.


Build Your Own LED Saber—Audio and Power Systems

Build Your Own LED Saber—Audio and Power Systems

In part 2 of the LED saber project, we'll assemble the power and audio systems.


Projects Oct 19, 2016 by Jeremy Lee
Bridge Amplifiers for Single-Supply Applications

Bridge Amplifiers for Single-Supply Applications

This article describes the bridge-amplifier configuration and explains why it’s especially handy when you don’t have a negative voltage supply.


Teardown Tuesday: What’s Inside a Bluetooth Speaker?

Teardown Tuesday: What’s Inside a Bluetooth Speaker?

Ever wonder what's inside a Bluetooth speaker? In this week’s Teardown Tuesday we are going to take a look at the inside of one.


News Mar 29, 2016 by Alex Udanis
How to Buffer an Op-Amp Output for Higher Current, Part 2

How to Buffer an Op-Amp Output for Higher Current, Part 2

In this article, we will look at two variations on the basic BJT current-buffering circuit.