How a 741 opamp works

NSLogan · 30th July 2009, 12:32 AM

can some please explain or point me to a high quality tutorial that explains how the 741 op amp works.
http://upload.wikimedia.org/wikipedi...velcolored.png
i'm trying to start at the very basics of diy audio by understanding how the basis of the headphone amplifiers i hope to design in the future work.

Thanks

sawreyrw · 30th July 2009, 01:09 AM

Try google. You will find it.

AndrewT · 30th July 2009, 10:14 AM

I have been told that the 741 is almost unique in that it can be inserted into it's socket the wrong way round and it will survive. Turn it around and it works.

A cheap chip to check your circuits are powered correctly.

peranders · 30th July 2009, 11:04 AM

Google after
"Opamps for everyone"
"Opamp applications Walt Jung"

There you will have nearly 1000 pages!

pacificblue · 31st July 2009, 05:18 AM

And don't forget to read the datasheet.

gmphadte · 31st July 2009, 06:21 AM

www.vias.org

panson_hk · 1st August 2009, 02:32 PM

Here is a classic for analog IC.

Analysis and Design of Analog Integrated Circuits (4th Edition) by Paul R. Gray, Paul J. Hurst, Stephen H. Lewis, Robert G. Meyer, Robert G. Meyer

pacificblue · 1st August 2009, 08:29 PM

When you uploaded the schematic to post #1, you must have overlooked chapter 6, where it is explained in detail.

Cliff45 · 2nd August 2009, 02:33 AM

Since this seems to be a request from someone just starting to become familiar with operational amplifiers, I hesitate to mention the textbook "Design with Operational Amplifiers and Analog Integrated Circuits", written by Sergio Franco. This is not "lightweight reading" by any stretch of the imagination, I assure you. This text covers from "stem to stern" nearly everything relevant to op-amp design and circuit modeling, and is chock full of intimidating algebraic madness. At over 600 pages, it's a reference source that I find myself going back to now and then when I can't remember some minute detail of a particular op-amp related design. Mr. Franco delivers in this one, for sure.

Also, it uses the good old uA741 for many of it's examples, plus Chapter 5 covers many of the various internals of the 741's circuit designs, with full descriptions and coverage of the various workings in tireless detail.

FWIW - Lots of these are on the "used" market, this text has been used for years in many EE programs all over the world. My ancient 1988 edition was given to me by a friend who left the engineering field some time ago.

-HTH

30th July 2009, 11:04 AM	#4
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Google after "Opamps for everyone" "Opamp applications Walt Jung" There you will have nearly 1000 pages! __________________ /Per-Anders (my first name) or P-A as my friends call me Tube Buffered Gainclone in work \|Thread

31st July 2009, 05:18 AM	#5
pacificblue diyAudio Member Join Date: May 2008	And don't forget to read the datasheet. __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)

1st August 2009, 08:29 PM	#8
pacificblue diyAudio Member Join Date: May 2008	When you uploaded the schematic to post #1, you must have overlooked chapter 6, where it is explained in detail. __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)

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30th July 2009, 12:32 AM	#1
NSLogan diyAudio Member Join Date: Jun 2009	How a 741 opamp works can some please explain or point me to a high quality tutorial that explains how the 741 op amp works. http://upload.wikimedia.org/wikipedi...velcolored.png i'm trying to start at the very basics of diy audio by understanding how the basis of the headphone amplifiers i hope to design in the future work. Thanks

30th July 2009, 01:09 AM	#2
sawreyrw diyAudio Member Join Date: Apr 2006 Location: Minnesota	Try google. You will find it.

30th July 2009, 10:14 AM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	I have been told that the 741 is almost unique in that it can be inserted into it's socket the wrong way round and it will survive. Turn it around and it works. A cheap chip to check your circuits are powered correctly.

31st July 2009, 06:21 AM	#6
gmphadte diyAudio Member Join Date: Jul 2003 Location: Dona paula, Goa	www.vias.org

1st August 2009, 02:32 PM	#7
panson_hk diyAudio Member Join Date: Aug 2005 Blog Entries: 10	Here is a classic for analog IC. Analysis and Design of Analog Integrated Circuits (4th Edition) by Paul R. Gray, Paul J. Hurst, Stephen H. Lewis, Robert G. Meyer, Robert G. Meyer

2nd August 2009, 02:33 AM	#9
Cliff45 diyAudio Member Join Date: Oct 2007 Location: Arizona, USA	Since this seems to be a request from someone just starting to become familiar with operational amplifiers, I hesitate to mention the textbook "Design with Operational Amplifiers and Analog Integrated Circuits", written by Sergio Franco. This is not "lightweight reading" by any stretch of the imagination, I assure you. This text covers from "stem to stern" nearly everything relevant to op-amp design and circuit modeling, and is chock full of intimidating algebraic madness. At over 600 pages, it's a reference source that I find myself going back to now and then when I can't remember some minute detail of a particular op-amp related design. Mr. Franco delivers in this one, for sure. Also, it uses the good old uA741 for many of it's examples, plus Chapter 5 covers many of the various internals of the 741's circuit designs, with full descriptions and coverage of the various workings in tireless detail. FWIW - Lots of these are on the "used" market, this text has been used for years in many EE programs all over the world. My ancient 1988 edition was given to me by a friend who left the engineering field some time ago. -HTH

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