All items tagged with audio electronics (40)

September 9, 2021 by Special Content

Brand-New! Reference Board for Infineon Class-D Audio Amplifier

Brand-New! The REF_MA5332BTLSPS reference board is a single BTL channel, 200 W/ch (4 Ω at 40 V) class D audio power amplifier for home audio systems. It features a single BTL channel self-oscillating type PWM for the lowest component count, convenient single power supply and highest performance and robust design. Be first to download all information and start working on your development with the Infineon Class-D Audio Amplifier MERUS MA5332MS IC!

Alpha and Omega Semiconductor Announces Ideal Diode Protection Switch Suitable for USB Type-C Power Delivery

August 27, 2021 by Cristina Costa

Alpha and Omega Semiconductor Announces Ideal Diode Protection Switch Suitable for USB Type-C Power Delivery

Alpha and Omega Semiconductor, a designer, developer and global supplier of a broad range of power semiconductors and power ICs, announced a new USB Type-C Power Delivery high voltage sink protection switch using ideal diode methodology for reverse current protection. The AOZ13984DI-02 and AOZ13987DI-02 are smart protection switches in a single small thermally enhanced 3mm x 3mm DFN package.

July 5, 2021 by audioXpress Staff

Polish Audio Electronics Manufacturer HEM Introduces Ferrum Brand of High End Audio Products

HEM is a Polish audio electronics designer and manufacturer and home of Ferrum, a new high end audio brand that just unveiled its first two products. The company benefits from an extensive history in audio electronics and an experienced engineering team that was responsible for some popular designs. Now with its own brand, Ferrum launches with HYPSOS, a hybrid power system, and OOR, an headphone amplifier for those looking for the ultimate musical bliss.

Build a Discrete High Output Current Buffer with JFET Input

June 24, 2021 by Dimitri Danyuk

Build a Discrete High Output Current Buffer with JFET Input

This article from Dimitri Danyuk explores ways to provide better isolation between input and output terminals and lower input noise current using JFETs from Linear Integrated Systems. For unity-gain buffer applications there are many open-loop IC buffers on the market based on bipolar technology. They are mostly complementary emitter followers connected in series. With the appearance of complementary JFETs from Linear Integrated Systems, it is possible to construct a discrete buffer with JFET input. This article was originally published in audioXpress, March 2019.

Audio Industry Icon: Rupert Neve, 1926-2021

February 13, 2021 by audioXpress Staff

Audio Industry Icon: Rupert Neve, 1926-2021

Rupert Neve, an innovator and business owner whose analog audio equipment designs have become an essential component in music recording, live sound production and home hi-fi systems, died on February 12, 2021 in Wimberley, Texas. He was 94. Rupert Neve's name will forever be synonymous with quality audio equipment. At 94, Rupert remained engaged and passionate about his work, spending most days on a perpetual series of audio electronics projects and continuing to mentor numerous design and development projects.

Searching for a Unicorn Part 2: Generating a Good Signal Source

January 27, 2021 by Brian Lowe

Searching for a Unicorn Part 2: Generating a Good Signal Source

In this second article, Brian Lowe (Belleson LLC) continues his search for the Unicorn of "Measuring Voltage Regulator Ripple Rejection," this time focusing on the test fixtures. Testing a voltage regulator with exceptionally good performance requires an even more exceptional signal source and measurement setup to measure sub-microVolt ripple across a wide frequency range. Complementing the final article, Jan Didden, offers an informative sidebar about super regulators. This article was originally published in audioXpress, June 2019.

Searching for a Unicorn Part 1: Measuring Voltage Regulator Ripple Rejection

January 20, 2021 by Brian Lowe

Searching for a Unicorn Part 1: Measuring Voltage Regulator Ripple Rejection

In this article Brian Lowe shares a fascinating journey in his search for a "Unicorn" that is measuring voltage regulator ripple rejection - or power supply rejection ratio (PSRR). Lowe is the founder and principle engineer at Belleson, LLC, and he has devoted a lot of time to this fascinating "quest." This article was originally published in audioXpress, May 2019.

New Projects, Reviews, and Glass Audio Special Articles Available with audioXpress May 2020

April 9, 2020 by audioXpress Staff

New Projects, Reviews, and Glass Audio Special Articles Available with audioXpress May 2020

audioXpress May 2020 Glass Audio/Tube Focus edition is now available. Highlighted on the cover is a review of the RødeTest FuzzMeasure Audio and Acoustic Measurement Software and Ethan Winer's experiments to measure capacitor distortion. For tube enthusiasts, Bill Reeve repurposes an old Shure preamp for line-level duty, and Bruce Heran details how he built his two Mini Blocks tube amplifiers. Mike Rothacher shares an inexpensive MOSFET Follower (MoFo) Class A amplifier project, Richard Honeycutt provides valuable lessons about repairing guitar amplifiers, and there's plenty more audio electronics focused articles. Download now!

More of Everything

November 28, 2014 by Joao Martins

More of Everything

In November 2013, audioXpress received a facelift. We expanded the content, added several new columns and feature articles, increased our focus on audio research and development (R&D), product design, professional audio equipment, and acoustic science while maintaining our roots in DIY audio and audio electronics.

Build a Hybrid Tube/MOSFET SE Amp

June 2, 2014 by Generoso Cozza

Build a Hybrid Tube/MOSFET SE Amp

With a little know-how and some basic parts, you can design a hybrid amplifier in fairly short order. This project combines the best attributes of both tube and transistor technologies.

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