Breaking News
Comments
Newest First | Oldest First | Threaded View
GordonScott
User Rank
Manager
re: Efficient amplification for real-world audio
GordonScott   5/2/2012 1:19:43 PM
NO RATINGS
In fairness to the author, he is rightly pointing out that maximum efficiency is pretty much irrelevant, certainly in audio-type applications. He's also rightly pointing out that class-D isn't necessarily as efficient in real-world applications as the marketing/hype would suggest. In the real world, class-G, especially with the inner transistors in class-B, can be surprisingly efficient and vastly lower distortion than any class-D. FWIW, various combinations of class-D and switched/pumped/tracking supplies have been around for decades in things like loud-audio radio-pagers.

bcarso
User Rank
Rookie
re: Efficient amplification for real-world audio
bcarso   4/26/2012 9:40:56 AM
NO RATINGS
I believe there are some significant infringement issues here, considering John French's class HD patents.

Tony Casey
User Rank
Rookie
re: Efficient amplification for real-world audio
Tony Casey   4/26/2012 8:48:04 AM
NO RATINGS
This article contains an number of errors. The theoretical maximum efficiency of a class A amplifier is 25% for a singled-ended stage, and 50% for a push-pull stage. Similarly, it can be shown that the maximum efficiency of a class B output stage is about 78%.



EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

How to Fly Without Catching the Dreaded Lurgy?
Max Maxfield
19 comments
I am currently not wearing my happy face. In fact, I am a "poorly soldier," as my mother would say when I was a little lad.

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
19 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
15 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
45 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)