Bruno tells all

[bcarso]

Just ran across this, in the form of a slide show. It is terse and moves fast, but has an amazing amount of material:

http://www.hypex.nl/docs/Bruno%20Masterclass/slides.htm

EDIT: Bruno would like us to go to the hypex or grimm site to begin with, and download this from there. I copied the address above from the PSW forum IIRC.

 

[JohnRoberts]

Bruno moderates a forum over at prosoundweb and he's pretty generous about sharing his knowledge.

JR

 

[bcarso]

I find myself in agreement with virtually everything he says, so far.

 

[emrr]

That's good stuff!

 

[bcarso]

I smiled when I saw the only appearance of a vacuum tube, but credited as being the only true voltage amplifier :grin:

 

[PRR]

"Don't Shave Off The Hair. It'll Grow Back."

 

[clintrubber]

Nice find :thumb:

Somebody knows of an elegant way of saving everything into one file ?

 

[bcarso]

[quote author="clintrubber"]Nice find :thumb:

Somebody knows of an elegant way of saving everything into one file ?[/quote]

On the forum John mentions there was a post from someone who said he couldn't view the slideshow initially, but had managed to convert to pdf. See

http://recforums.prosoundweb.com/index.php/m/299968/0/#msg_299968

(also note typo someone noticed and Putzeys acknowledges---I didn't check to see if the latest posted version of the slide show has gotten the correction in or not).

BTW I found this looking for the Boyk and Sussman paper on distortion and feedback, which has been discussed in here before:

http://www.its.caltech.edu/~musiclab/feedback-paper-acrobat.pdf

Various people commented, in the PSW forum, about some of Bruno's material in light of B&S (I don't want to abbreviate it BS, as it definitely is not IMO). I do find it interesting that BP says use tons of feedback, and Boyk (I suspect more than Sussman) tends not to like it at all. This last sentence oversimplifies both of their POVs, so sue me :green:

 

[tv]

[quote author="PRR"]"Don't Shave Off The Hair. It'll Grow Back."[/quote]
That's why you shave it: it grows back stronger. How do I know? I do. :green:

and yeah big german caps are bad :wink:

 

[JohnRoberts]

NFB is an extremely powerful tool and I am a fan.

Of course any tool can be misused so it's good to understand how it works.

We all start out taking for granted how simple opamp circuits work.

JR

 

[amorris]

His forum makes my head hurt! I usually leave there thinging I shouldve stayed is school, physics/math does matter!

 

[emrr]

[quote author="JohnRoberts"]NFB is an extremely powerful tool and I am a fan.

Of course any tool can be misused so it's good to understand how it works.

JR[/quote]

It's taken me a surprisingly long time to grasp some of the inner workings of NFB, and I've found very few people who can answer what now seem to be very simple questions about it. Add in it's use as a buzz-word, and it's a real recipe for disaster.

 

[bcarso]

[quote author="amorris"]His forum makes my head hurt! I usually leave there thinging I shouldve stayed is school, physics/math does matter![/quote]

One of the problems with school is we don't know and often can't know at the time how valuable the information/understanding is going to become. And often the teachers are not very good. Like any other field, there are few real superstars.

But if we leave school for a while, and in the "real world" acquire some appreciation for its value---especially the maths---it's often very difficult to go back, for a variety of reasons.

At least now there is the internet. Not all there is correct or well-expressed, but there is a lot of good stuff.



Talk about brain hurters though: when I did the google using the search term "boyk and sussman", and then tried to wade through the few results, I got into some threads on DiyAudio and other fora. I don't know how many days and weeks worth of exchanges were in some of them, but reading them at a sitting was remarkably fatiguing. And needless to say, the experts and experts-in-training were rarely in agreement, with negative egos often rampant and feelings getting bruised. Whew!

 

[syn]

[quote author="clintrubber"]Nice find :thumb:

Somebody knows of an elegant way of saving everything into one file ?[/quote]

http://www.wisdom-soft.com/asr/index.htm

Maybe not a very elegant way but it is free, and does the job. :green:

bcarso thank you very much for posting...

 

[ruairioflaherty]

I drop by Bruno's forum every week to take a look around. The post count is low but every post of his seems to be quite condensed. I like the fact that he seems to have a serious grounding in physics and science but still leaves a little room for the ear, the unexplained and the not yet understood.

Perhaps one of you guys who actually knows what you're talking about could invite him over. It has occurred to me that a guest moderator along the lines of gearslutz (all similarities to end there please) would be a fantastic addition to this forum. We are already blessed that Dan Kennedy, John Hardy, Fred Forssell and several other big dogs visit occasionally. A 1 month Q&A with the likes of Dave Hill, George Massenburg or Bruno would be fantastic. Unfortunately the cloning makes this an unlikely proposition (says the guy who just spent a 3 hour train ride working on a Rev D BOM )

:guinness:
Ruairi

 

[bcarso]

I could see where Bruno P. could wind up spending about all of his time posting, were he to participate in every forum that would welcone him. That said, the occasional visit would certainly be welcome.

One of the problems is---if you post, and it provokes a lot of replies, and some of those include queries of the poster---you feel obligated to respond. Particularly if someone is attributing things to you that are wildly off base :roll:

I have to say though: this forum is one of the less contentious, IMO, which is one of the things I like about it.

 

[JohnRoberts]

He seems pretty responsive to sensible questions so if you have some burning question for him ask him in his house...

I wouldn't like to see him burn out... he is a valuable asset.

Not everybody with that level of understanding is willing to tolerate us fools.

JR

 

[bcarso]

[quote author="JohnRoberts"]I wouldn't like to see him burn out... he is a valuable asset.
JR[/quote]

One clue to his vitality: (1) he's pretty young (2) according to an IEEE piece, his g/f is geographically distant :razz:

 

[tv]

http://www.grimmaudio.com/whitepapers.htm
more whitepapers

There's an interesting remark on 78xx stabilizers' noise performance in "testinstruments" pdf.

 

[ruairioflaherty]

[quote author="JohnRoberts"]He seems pretty responsive to sensible questions so if you have some burning question for him ask him in his house...

I wouldn't like to see him burn out... he is a valuable asset.

Not everybody with that level of understanding is willing to tolerate us fools.

JR[/quote]

I tend not to question people directly very often

a)because my electronics knowledge is basic and most of my questions can be answered by the google machine with a bit of effort

b)I do most of my learning by sitting on the sidelines and watching folks like you, PRR, Brad etc bouncing ideas and thoughts back and forth. Specific answers can often be found and calculated, what fascinates me is watching how experienced engineers approach problems and designs, it's not so much the answer as how you got there. One of my favourite things to read is a circuit walk through by the designer, I hit google with the words and concepts that I don't understand and a few hours later I've learned something new.

Cheers,
Ruairi