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Electronic Basics: Understanding Class B and Class AB Amplifiers

amirm

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#1
In a recent thread on Benchmark AHP2 amplifier (http://www.audiosciencereview.com/f...hmark-first-watt-abx-facepalm.766/#post-23784) I noted that their marketing page for that unit showed a class B amplifier but said that it was class AB.



Even though this is a much talked about topic online, I thought I post this video from one of my other favorite Electronics bloggers, Shahriar Shahramian. He is a PhD researcher/designer at AT&T Bell Labs and his videos usually are quite advanced, dealing with microwaves and other advanced electronics. But when he started his blogging career, he started with this practical tutorial and measurements of class B versus class AB amplifier.

Back to the video, here it is:

Shariar is very smart and does a great job explaining this topic. Set aside 39 minutes and watch it. He is someone you want to know in the electronics domain.
 
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amirm

amirm

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Thread Starter #3
On the original video if you don't want to learn the circuit theory, after watching the first 5 or so minutes, you can skip to marker 22:00 and from there on he shows the performance/measurements of the amplifiers.
 

ajawamnet

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#4
His review of the Deepace vector network analyzer was incredible - I went out and bought one based on his rec and what he mentioned the company did with the submission of the unit for his review.

Also just bought the Siglent SSA, again based on his teardown and review...
 
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amirm

amirm

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Thread Starter #5
Shahriar's knowledge of advanced electronics and measurement gear is just incredible. I have watched him repair the most hopeless RF gear. It is so rare to see someone so good at both theory and practical aspects of repairing gear.
 
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