Please explain for me (dummy)

CJ900RR · 25th September 2006, 02:40 PM

Everyone was friendly and explained werry well for me how to calculate gain and other thing needed when calculating electronics around the LM3886/3875. Thank's

i would now like to learn the basic's around OP-amps needed when designing a buffer or a preamp. What to think about, desired gain and everything else.

So if you feel like taking your time and learn a beginner, your help is more then welcomed. Thank you in advance!

Best regards, CJ900RR

I_Forgot · 25th September 2006, 03:07 PM

I suggest that you do a simple web search or go to your local library and pick up a book on electronics, and by all means start with the data sheet for the chip. There are thousands of web sites devoted to electronics.

Horowitz and Hill's "The Art of Electronics" is a good book that provides a broad overview of electronics for different purposes, including basic op-amp theory and practice.

These forums are really not for beginners. Here you will hear from people who think resistors sound different depending on the direction they are wired, that the finish on the box your amplifier is built in will affect the sound (gotta use rare, endangered species woods and violin lacquer!), and similar nonsense. As a beginner you need to focus on learning basic principles so that when the time comes to visit forums like this you can separate the BS from the occasionally useful info that gets posted here.

Study hard!

I_F

Dennis Hui · 25th September 2006, 03:15 PM

You might want to check out "Op Amps For Everyone":

http://focus.ti.com/lit/an/slod006b/slod006b.pdf

Cheers,
Dennis

Nordic · 25th September 2006, 04:43 PM

also you may want to look at building a cmoy headphone amp or 2, these are generaly low component (similar to GC) and safe and easy learning tools.... being battery operated you can generaly make as many mistakes as you want and only run the battery flat at worst.

ppcblaster · 26th September 2006, 02:01 PM

or answer the question? with all the typing, it would be easier to

just answer the questions.

CJ900RR · 26th September 2006, 02:35 PM

Quote:

Originally posted by I_Forgot
I suggest that you do a simple web search or go to your local library and pick up a book on electronics, and by all means start with the data sheet for the chip. There are thousands of web sites devoted to electronics.

Horowitz and Hill's "The Art of Electronics" is a good book that provides a broad overview of electronics for different purposes, including basic op-amp theory and practice.

These forums are really not for beginners. Here you will hear from people who think resistors sound different depending on the direction they are wired, that the finish on the box your amplifier is built in will affect the sound (gotta use rare, endangered species woods and violin lacquer!), and similar nonsense. As a beginner you need to focus on learning basic principles so that when the time comes to visit forums like this you can separate the BS from the occasionally useful info that gets posted here.

Study hard!

I_F

Thank you but i have studied electronics for 3 years, and have worked with it for 7 years, so i am not a beginner

Maybe i should have developed my question a bit further. What i want is to know how to design arround op-amps when it comes to preamp and buffers. Dessired gain and so on

Quote:

Originally posted by Dennis Hui
You might want to check out "Op Amps For Everyone":

http://focus.ti.com/lit/an/slod006b/slod006b.pdf

Cheers,
Dennis

Thank you! A good link with a lot of information. Now i have something to read for the next weeks

pinkmouse · 26th September 2006, 02:45 PM

Quote:

Originally posted by ppcblaster
or answer the question? with all the typing, it would be easier to just answer the questions.

Most of the answers are already here, but our members get bored answering the same questions time after time, and it's that old fish/fishing net parable. Still, if you want to write a beginners guide, feel free, after all, this is a group effort!

Nordic · 26th September 2006, 03:10 PM

Yep yep, you definatly created the wrong impression with the question's format...

Maybe you will just have to work through this yourself a bit and then bounce your conclusions on this board... you will get much constructive feedback that way.

I suppose you first need to understand the relationship between power available, bandwidth and gain.. i.e. what happens when you have too little or too much.....

The short way to your goal would be to find out what your source's output levels are, decide what input level you want for your next stage and work backwards from there....

25th September 2006, 02:40 PM	#1
CJ900RR diyAudio Member Join Date: Jan 2006	Please explain for me (dummy) Everyone was friendly and explained werry well for me how to calculate gain and other thing needed when calculating electronics around the LM3886/3875. Thank's i would now like to learn the basic's around OP-amps needed when designing a buffer or a preamp. What to think about, desired gain and everything else. So if you feel like taking your time and learn a beginner, your help is more then welcomed. Thank you in advance! Best regards, CJ900RR

26th September 2006, 02:01 PM	#5
ppcblaster diyAudio Member Join Date: Jul 2006	Why don't you have a tutorial section? or answer the question? with all the typing, it would be easier to just answer the questions.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
explain to a dummy	Thebrain	Multi-Way	14	11th October 2009 04:12 AM
Tri Dummy Load	raudio1969	Parts	0	25th February 2009 01:14 AM
Help this dummy	davidlzimmer	Multi-Way	1	28th April 2006 04:32 PM
Dummy needs help	davidlzimmer	Solid State	15	24th March 2006 11:44 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

25th September 2006, 03:07 PM	#2
I_Forgot diyAudio Member Join Date: Jan 2005 Location: Phoenix, Az.	I suggest that you do a simple web search or go to your local library and pick up a book on electronics, and by all means start with the data sheet for the chip. There are thousands of web sites devoted to electronics. Horowitz and Hill's "The Art of Electronics" is a good book that provides a broad overview of electronics for different purposes, including basic op-amp theory and practice. These forums are really not for beginners. Here you will hear from people who think resistors sound different depending on the direction they are wired, that the finish on the box your amplifier is built in will affect the sound (gotta use rare, endangered species woods and violin lacquer!), and similar nonsense. As a beginner you need to focus on learning basic principles so that when the time comes to visit forums like this you can separate the BS from the occasionally useful info that gets posted here. Study hard! I_F

25th September 2006, 03:15 PM	#3
Dennis Hui diyAudio Member Join Date: Aug 2002 Location: Toronto, Canada	You might want to check out "Op Amps For Everyone": http://focus.ti.com/lit/an/slod006b/slod006b.pdf Cheers, Dennis

25th September 2006, 04:43 PM	#4
Nordic diyAudio Member Join Date: Sep 2005	also you may want to look at building a cmoy headphone amp or 2, these are generaly low component (similar to GC) and safe and easy learning tools.... being battery operated you can generaly make as many mistakes as you want and only run the battery flat at worst.

26th September 2006, 03:10 PM	#8
Nordic diyAudio Member Join Date: Sep 2005	Yep yep, you definatly created the wrong impression with the question's format... Maybe you will just have to work through this yourself a bit and then bounce your conclusions on this board... you will get much constructive feedback that way. I suppose you first need to understand the relationship between power available, bandwidth and gain.. i.e. what happens when you have too little or too much..... The short way to your goal would be to find out what your source's output levels are, decide what input level you want for your next stage and work backwards from there....