Opamp book by Walt Jung - A masterpiece

http://www.analog.com/library/analogDialogue/archives/39-05/op_amp_applications_handbook.html

This book has been released as pdf. A masterpiece about opamps.

Yes, great book. The link was posted not so long ago by Jack (AMZ-FX).

chrissugar

You are right but the book is good nevertheless.

If it was mentioned here before, I missed it. Yes, a masterpiece.

This is NOT his ~1980 books recycled. Opamp Cookbook and Audio Opamps are also masterpieces, but this is something new (with a lot of newly compiled old background/history).

The Jung-book was already in the META-'Everyday Theory and Formulae'
http://www.groupdiy.com/index.php?topic=2423&start=15
but it sure can't be mentioned enough ! :wink:

So much cool info around this here in this nice place, anyone manages to read it all ? :shock: :wink:

Bye,
Peter

I made the mistake (?) of starting to read this about an hour ago :grin: Utterly fascinating.

One shock: look at section three of op amp history, and note the schematic for Dick Burwen's design for An*log Devices of the model 121, figure H-11. There (in 1966!) is the embodiment of Jensen's patent for inductors bypassing emitter resistors in the input differential pair!! :shock:

I am not suggesting that Deane was aware of this, since it's probably only recently that this schematic was made available. But clearly AD did not see fit to disclose it or patent it at the time, and there was clearly no way for the USPTO to have known about it when examining Jensen's patent application.

Woof!

I knew the 990 emitter inductor would bring controversy here. It always does. But I'll spare us the Bell Labs pic again. =)

(of course I went right to the tube opamp section in this pdf)

[quote author="Larrchild"]I knew the 990 emitter inductor would bring controversy here. It always does. But I'll spare us the Bell Labs pic again. =)

(of course I went right to the tube opamp section in this pdf)[/quote]

You mean the one with Bardeen and Brattain?
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and Shockley :twisted:

Having someone named "Shockley" in your lab just sounds like trouble, anyway.

yes, Bardeen and Brattain
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and Shockley

ooo! Chopper-Stabalized tube opamp. Now how do build a compressor out of this? Great Reading. My work day is shot!

Along with Jung's Opamp Cookbook, another useful title is Don Lancaster's Active Filter Cookbook. The tattered copy on my bookshelf was published by Howard Sams in 1975, but there is apparently a new edition available:

http://www.amazon.com/exec/obidos/ISBN%3D075062986X/donlancastersgurA/102-7618148-4594566

Bri

[quote author="Viitalahde"]Welcome, Brian!

:guinness:

Apparently Chris's invitation didn't take too long![/quote]


Indeed!

Welcome :guinness: :guinness:

Wow...thanks, guys! I've been meaning to check this board out, but never got around to it. I received an invite earlier today (from Chris?? I don't recall who PM'ed me via the PSW website).

It looks like a great place for an old solder-sniffer <g> such as myself. Now I need to spend some time digging through the old threads.

Bri

[quote author="Brian Roth"]Wow...thanks, guys! I've been meaning to check this board out, but never got around to it. I received an invite earlier today (from Chris?? I don't recall who PM'ed me via the PSW website).

It looks like a great place for an old solder-sniffer <g> such as myself. Now I need to spend some time digging through the old threads.

Bri[/quote]

Yup it was Chris... (aka chrissugar)

A few of us were admiring your custom console in the brewery...

Unbelievable stuff :thumb:

When one is "young", anything is possible!!! Nowadays, I would NEVER attempt to build anything like that Maranatha desk!

It is still in service, with probably a bazillion mods done by subsequent owners:

http://www.brianroth.com/projects/m77/m77console-2004b.jpg

Currently, I'm content with doing simple things, such as rackups:

http://www.brianroth.com/audix.jpg

http://www.brianroth.com/projects/tfine/adm-front2.jpg

http://www.brianroth.com/projects/tfine/adm-inside.jpg

Or.....mastering monitor controllers (or, as Dave G. calls it, "the world's most pimped-out volume control"):

http://www.brianroth.com/projects/img_0922a.jpg

This rackup is still in-progress...I took the digipic before sending the front panel to my engraver...and the "proper" knobs for the blue-shaft pots hadn't arrived yet:

http://members.cox.net/brianaroth/joey/front2.jpg

<G!> Getting the metal work done correctly is the "bane of my existence", however. I'm lucky to have a local friend/machinist that understands audio gear panels, and a long-suffering engraver who will spend the required time to get the front panel properly marked.

In that final subject....I spend a lot of time doing stuff up in my CAD program (with dims, etc), yet my engraver and I can NOT find a common file format to translate my CAD into his "robots". Hence, double effort is required... in effect, Engraver John has to manually translate my drawings into "Mr. Roboto" files.

Bri

Hey Brian, Welcome...I suggest we team up and sell our old Gearslutz training wheels on Ebay. And refreshingly, no one here will tell you what eq frequencies to always use on a snare they've never heard.
=)
Lar'

Finally, a fellow Oklahoman!

Welcome Brian! Enjoy.
Charlie

[quote author="Brian Roth"]I received an invite earlier today (from Chris?? I don't recall who PM'ed me via the PSW website).
[/quote]

It was me. Welcome.

That mastering monitor controller looks great. I supose it is a passive selector, stepped attenuator with metering. The Mytek measure peak, one of the Sifams measure VU, but what does the other?
I supose VUs are not connected direct to audio but buffered.

chrissugar

The Mytek is actually an AES/EBU "through" item that is merely "parked" in the same chassis. IOW, it has nothing to do with the analog monitoring/control of the rest of the package, but was merely a handy place to "park" that module. The Mytek has its own I/O:

http://www.brianroth.com/projects/img_0935b.jpg

The Dixson VU and Compton (sp?)/McCurdy PPMs are indeed buffered from the main signal path. The meters on the left of the chassis read left channel analog source, and right is right...

Bri

Sorry. Now that I looked closer to the VUs, it is obvious they are not Sifams.

chrissugar

FWIW, the Dixson VU meters were "stripped" from an Ampex VU accessory panel which was sold as an option for one of their 4 x 1 solid-state rack mount mixers.

One oddity...those Dixson VUs (also used in the AG-440 and AG-440B recorders) require a totally non-standard series resistor. Instead of 3K6 or 3K9, the Dixson's need approx. 5k1 in series. I need to verify the exact value from my notes.

Bri