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Make a Simple Audio Amplifier

Step 2Circuit Diagram

The circuit which we are going to make is.

Thanks to cld000 for schematic drawing.

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16 comments

Feb 18, 2011. 4:09 AMjunaid646 says:

frens san ny one tell abt dat 0.01mf and 0.047 wch z the positv terminal in dat..... and frens......wat abt LM386 ic pin numbr 7.... y it z left blank.... no connction itslf or wat??

Dec 5, 2011. 5:42 PMshawntherobot says:

those caps don't have a polarity

Mar 9, 2011. 12:08 PMankitgarg2005 says:

7th pin should be left black OK.

May 8, 2011. 5:00 PMajervis says:

um can i remove the 0.047? i got everything but that and i cant find it. Also how loud will this amp make 4 speakers play? with and without the 0.047

Dec 5, 2011. 5:41 PMshawntherobot says:

you can remove it but the sound quality will be pretty bad

Aug 7, 2011. 8:31 PMjhutton says:

im lookin at running this with an adaptor, what amount of amps will i need?

Jul 5, 2011. 8:32 PMasatheesh says:

i'm having two 3 ohm speskers how can make amplifier for that speakers

Dec 27, 2010. 2:33 AMyonex says:

can the 9v be a 5v???

Feb 17, 2011. 11:00 AMankitgarg2005 says:

if u r thinking of using USB (5V) port then OK , u can use but at higher volume noice will come.

Jan 15, 2011. 1:27 PMzabi_rauf (author) says:

Nope. It has to be a 9v, you can easily get the 9V battery.

Jan 15, 2011. 2:58 AMtalha91 says:

Oh yes in the end I found a picture through which I can continue making my Circuit the graphical diagrams sucks....

Oct 30, 2010. 12:27 PMOXI2vasyl says:

hi i confused on variable resistor part :S

Oct 12, 2010. 4:25 AMMoonlight27 says:

where do you connect the gnd?

Oct 25, 2010. 2:01 AMMrLeitexxx says:

the negative of your 9v battery (-9V)

Aug 6, 2009. 8:54 AMmeshrammanish says:

one more question... well i got a HWCAT CSC386P... will it work???

Mar 1, 2009. 12:36 PMcarik says:

ok i am really confused... have you just made up your own symbols, have you ever seen a circuit diagram before? dont get me wrong this is a great guide but it would be a lot more helpful if all the symbols were actually real symbals

Jun 15, 2009. 4:24 AMcld0000 says:

http://i731.photobucket.com/albums/ww311/xcldx/schematic.jpg
I redrew the schematic, and replaced the original schematic symbols to the proper ones(except input and output, for I don't know what they were).

May 29, 2009. 11:40 AMGasburner says:

They aren't circuit symbols, they are what the components look like, arranged in such a way so that we can see how they are connected. It is meant to look like how it would on a Printed Circuit Board :)