EDN

To bias or not bias: New audio output transistors make that decision easy

ThermalTrak integrates power output transistors with thermal bias diode. One of the major design concerns in the output section of a typical class AB audio amplifier is output bias and stability over ...
Audioholics

The Peachtree Audio GaN400: A New Breed of Class D Amplification

Peachtree Audio’s GaN400 stereo power amp ($3,000) blazes new trails for Class D amplification. The amp uses cutting-edge GaNFET transistors in its output stage, delivering a massive 400wpc! Read on.
Electronic Design

Audio Transistors Handle 350V Collector To Emitter

Emerging as the industry's highest voltage bipolar transistors designed for audio amplifier output stages, the MJL4281A (NPN) and MJL4302A (PNP) 15A, 230W power transistors specify a sustained ...
Electronic Design

Why is Quiescent Current So Important in Class D Amps? (Download)

Back in the day (1970s), audio amplifiers like the Phase Linear 700 were designed with discrete power-transistor components. Huge audio power transistors like the 2N3055 and others back then were ...
EDN

2 Channel Audio Mixer using Transistors

This 2 channels audio mixer is based on the 2n3904 transistors which forms 2 pre-amplifiers. The first preamplifier of the audio mixer has a high gain and can be used for microphone input, and the ...