All articles

Square-Law class-A: a family of efficient class-A power amplifiers

Author(s): Hegglun Ian

It is well known that Class-A gives the best sound quality in audio power amplifiers but the efficiency is so low that it is impractical to build much more than...

€2,99 

Towards a reconciliation of measurements with listening tests

Author(s): Hegglun Ian

Standard THD measurements give a clear indication of amplifier linearity for the signals with which it is measured. Curiously, however, very often THD performance...

€2,99 

A cube-law power amplifier - Class A at 1/4 of the dissipation

Author(s): Hegglun Ian

A Cube-law audio power amplifier – class-A at ¼ the idle dissipation           Vol 8

Ian Hegglun...

€2,99 

Current driven Output-stage class AB power amplifier

Author(s): Hegglun Ian

This article covers a simple modification that overcomes most of the tricky thermal stability issues of regular Class-AB output stages. It uses a common emitter power...

€2,99