One of my first jobs as a freshly minted graduate engineer involved the maintenance of a set of analogue chart recorders. They were museum pieces by the early 1990s: a motorized roll of graph paper ...

AC/DC have finally announced the details of their upcoming Backtracks box set, a 3-disc/2-DVD/1-vinyl collection so massive it has to be housed inside a guitar amplifier. That’s right, this box set ...

The need for conditioning low-level ac signals in the presence of both common-mode noise and differential dc voltage prevails in many applications. In such situations, ac-coupling to instrumentation ...

AC/DC's new $200 box set packs musical rarities and memorabilia inside a functional 1-watt guitar amplifier. The AC/DC Backtracks packaging, pictured, is unique and fully operational. And what's ...

PRESS RELEASE: The popular Roland AC acoustic guitar amps gain a new member with the arrival of the AC-33 Acoustic Chorus Guitar Amplifier. Designed for both high-quality sound and supreme portability ...

Boss has added an interesting new amplifier to its acoustic range. The AC-22LX battery-powered compact amplifier for acoustic instruments rocks Air Feel processing for faithful natural tones at ...

A general method for measuring AC high voltages is to use a voltage divider, with two resistors in series. The resistors are selected so across one of the elements is some arbitrary fraction (like ...

This file type includes high-resolution graphics and schematics when applicable. 1. Bob Pease built this varactor-input op-amp out of discrete components, based on an old design of Jim Williams. A ...