Hello,

I'm just starting out with electronics and I've found this diagram of a battery powered sound amp. I thought this would be a cool project to do for my guitar. I'm only in grade 9 and I've learnt about ohms law. I can read switches and resisters off a circuit. Other than that I'm stuck!

Please could someone help me with the layout of the circuit and tell me what are the exact parts that I will need.

Thanks

 

The circuit is built around an "LM386 low voltage audio power amplifier." You can read about the chip here:
http://web.mit.edu/6.115/www/datasheets/LM386.pdf

This is really just an "operational amplifier" optimized for a given task. You can read about operational amplifiers here:
http://www.allaboutcircuits.com/vol_3/chpt_8/index.html

In addition to resistors, the only other components in the circuit are capacitors. Learning about capacitors takes a little more effort than learning about resistors. See both of the following:
http://www.allaboutcircuits.com/vol_1/chpt_13/index.html
and then
http://www.allaboutcircuits.com/vol_2/chpt_4/index.html

You'll should also begin learning how to solder.

 

This could be somewhat difficult if you don't have the means to make a printed circuit board. An alternative would be to go to www.circuitspecialists.com and get a bus strip to breadboard the circuit on. Their #WB-102-1+J is only $6.49. They have small parts, too.

 

This is really just an "operational amplifier" optimized for a given task

The 386 or any audio amp capable of driving real speakers is similar to but not the same as an operational amplifier.

Look here to find a fully worked out project using a 386 from a 9 volt battery.

http://www.talkingelectronics.com/projects/MiniBenchAmp/MiniBenchAmp.html