I want to make an audio amplifier circuit, can anyone provide me its circuit design? I have searched google a lot but didn't find anything helpful. I am a student of electrical engineering but yet I am studying basics so plz provide as much help as you can.

 

Hello,

Is there something for you in the links from this page:
http://www.educypedia.be/electronics/circuitsamplifiers.htm

Greetings,
Bertus

 

Have you tried to look in magazines such as Elektor, Silicon Chip, etc?. To make a Audio amplifier circuits are so popular on such magazines, i would say "classic".

 

Google: LM386

 

How much power do you want? Stereo? Speakers ohmage?

 

Hi
Here's a nice little amplifier for you. If you use R3 you can add a pre-amp to the amp.To prevent distortion, don't go under 15k for R3. I show 12v for the supply, but change it to a 15vdc input to make sure you get 7w rms output.

 

Can anyone provide circuit diagram made by hand, I have seen all the stuff but even yet I have understand nothing, my professor just told me to make audio amplifier and thats it, he neither gave me list of components to be used nor circuit diagram.

 

Ok, this is the diagram. If you need more, then you have to Google for it

 

see the following links

cheap amd easily available audio amplifier

http://www.electroscheme.ru/sprav/um/TBA810_15.jpg

http://www.electronica-pt.com/db/imagens/TBA 810 .jpg

 

Soda,
Your TDA2003 amplifier is missing many important parts that are shown in its datasheet.
It does not need the resistor you added to the input.

 

Hi AUDIOGURU,
I used this amp to amplify the output of a ne555 siren for my house alarm project. Without the 15k resistor the sound was distorted like crazy.

I also use this amplifier for a so called home made tape player. The tape player output was in the region of 215mV and without the 15k resistor, the amp start to distort. I read the data sheet of the TDA2003 and according to it the input sensitivity of the TDA2003 is in the region of 65mV. Maybe i got it all wrong because I'm not a expert electronic guy, but i only do it as a hobby. So, if you think my way of understanding the date sheet is wrong, then please show me the write way because I'm always open if I can learn more from a more experience person.

 

You should have used the circuit in the datasheet because it was designed by the experts who designed the IC.

 

what's this TDA2003? i guess it is a diode, and how much input supply I should give? AC or DC?

 

what's this TDA2003? i guess it is a diode, and how much input supply I should give? AC or DC?

Why don't you look at its datasheet?
It is a car radio power amplifier IC.

 

I told you in the beginning that I am studying basics yet

 

I told you in the beginning that I am studying basics yet

You asked, "What's this TDA2003?". It doesn't matter if you are studying basics. Anybody can look for it in Google or look in www.datasheetarchive.com .
The datasheet tells you all about it and shows its specifications.

 

haven't got any easy diagram yet :-(

 

The schematic in its datasheet is easy, but newer car radio amplifier ICs use a circuit with more output power and fewer parts.

 

I have built simple 1W amp. with TBA820M. Easy to build. Schematic is in the datasheet. It has nice sound.
Try:
http://images.google.com/images?hl=en&gbv=2&tbs=isch:1&sa=1&q=TBA820M&aq=f&aqi=&aql=&oq=&start=0

 

my teacher told me that my amplifier must have a mic to produce sound, now what to do with it???