Ars Technica

Help me fix my amplifier- it has a blown output transistor, how do I tell which one it is?

There appears to be 16 large transisitors which were mounted to the heatsink of this amplifier. It is a Planet Audio 4 channel car audio amp. From some quick Google searching, it looks like I should ...
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 ...
EDN

ON Semi’s output audio transistors eliminate thermal lag and bias in high-fidelity amps

Phoenix, Ariz. — Today On Semiconductor is using the International Consumer Electronics Showcase (CES) in Las Vegas to show off a new family of output audio transistors with internal bias control that ...
Hackaday

Know Audio: Amplifiers And Distortion

As we’ve traced our no-nonsense path through the world of Hi-Fi audio, we’ve started with the listener, understood the limitations of the human ear, and thence proceeded to the loudspeaker. We’ve ...
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 ...
Hackaday

Biasing That Transistor: The Common Base Amplifier

We’ve previously remarked upon a generation lucky enough to be well-versed in microcontrollers and computersised electronics through being brought up on the Arduino or the Raspberry Pi but unlucky ...
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 ...