Breaking News
Comments
Newest First | Oldest First | Threaded View
GK77
User Rank
Rookie
re: A new audio amplifier topology with push-pull transimpedance stage - Part 1: Introduction
GK77   9/1/2012 3:42:07 AM
NO RATINGS
I had come up with the exact same symmetrical TIS design as Samuel, independently, which I confirmed by corresponding with Samuel after the article was published in Linear Audio, before seeing the article my self. So I have to agree it is a clever design : - ). My only reservation with Samuels’s article is that it did not venture into a loop gain analysis of the Miller compensation loop. As some might find it of use I’ve uploaded some of my own analysis, including detail of an alternative method (shunt compensation) of predictably stabilising the Miller compensation loop, onto the net here: http://www.users.on.net/~glenk/millerloop/millerloopstability.htm Cheers, Glen

StephanWeber
User Rank
Rookie
re: A new audio amplifier topology with push-pull transimpedance stage - Part 1: Introduction
StephanWeber   8/30/2012 2:51:40 PM
NO RATINGS
Nice circuit, but not really new. There are also some disadvantages not mentioned unfortunately. The slew limit from input stage and Q11/12 remains. The mid-stage Q9 can easily drive Q11 too hard (Q11 then in cut-off!). Here better add a clamping circuit. Allmost all transistors need to withstand high-voltages and the signal has to travel through many stages, that makes the whole amp quite unstable. The older mentioned circuit can be also improved to get rid some the mentioned limitations. For instance the filtering for ripple rejection is quite easy to implement with little effort.



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

Energizing the Young Engineers of Tomorrow
Max Maxfield
15 comments
It doesn't seem all that long ago when I was a bright-eyed, bushy-tailed young engineer. Now I feel like an old fool, but where are we going to find one at this time of the day (LOL)?

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...