EDN

Push-pull amplifier configurations: choose wisely

Please consider a transformer driven load resistance in the following configuration, where “1T” and “2T” denote turns ratio, and the impedance presented to current source I1 is the 50 Ω of the load ...
EDN

Designing a low-distortion audio output stage – Part 1: Introduction, the problem with push-pull outputs

This material originally appeared as one long article in Linear Audio Volume 2, published in September 2011. Linear Audio is a book-format audio magazine published half-yearly by Jan Didden. These ...
Hackaday

Keep Those Filaments Lit, Design Your Own Vacuum Tube Audio Equipment

It was a cold January Saturday night in Chicago and we had big plans. Buddy Guy’s Legends bar was packed. We setup directly under one of the PA speakers less than 15′ from the stage. Time to celebrate ...
Electronic Design

Tubes Versus Solid-State Audio Amps—The Last Word (Or “House Of Fire,” Part 2)

Fig 1. This basic source-follower circuit is the kind of amplifier you would find in an electric bass guitar amplifier. R6 provides the feedback. On the other hand, low-distortion applications require ...