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Amplifier substitute PAM8403 class D amplifier

SarahG

Sep 8, 2018
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Hi, I am a newbie to electronic circuits and had the over ambitious task of making these bone conducing headphones from a tutorial online.
Here is a link to the project.
http://techiesms.com/misc-projects/3-projects-using-bone-conduction/
The project asks for a PAM8493 class D amplifier and specifies the circuit diagram for that. When I went to my electronics store they did not have the above mentioned but gave me this Arduino Compatible 2 x 3W Amplifier Module.
Here is the link.
https://www.jaycar.com.au/arduino-compatible-2-x-3w-amplifier-module/p/XC4448

My question is, can someone please send me a circuit diagram for the substitute amplifier that I have purchased. I am quite lost and the person at the store wasn't too helpful.

It would be very much appreciated
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
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25,510
You were given exactly what you asked for. That part uses the PAM8403.

Connect it up exactly the same way.
 

73's de Edd

Aug 21, 2015
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Aug 21, 2015
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Dame Sarah Geeeeeeeeeeee . . . . .

Here 'ya go . . . . . now you only need to know your A,B,F's.

ACCOMPANYING . . . . . .FACTOIDS of reality . . . . .

"You ain't gonna' get 3 + 3 watts from the supply source and methodology shown." ( probably irrelevant)
"You definitely ain't gonna' get "Hi Fi Steeeee- row . . . . quality of sound reproduction performance."

CROSS-CORRELATION of INTER-CONNECTIONS . . . . .

upload_2018-9-8_3-45-1.png

73's de Edd . . . . .
.....
 
Last edited:

73's de Edd

Aug 21, 2015
3,622
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Aug 21, 2015
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"You definitely ain't gonna' get "Hi Fi Steeeee- row . . . . quality of sound reproduction performance."


Amend last posts text to . . . . I think those piezo transducers will sound {START 250 point FONT} AWFUL ! { END 250 point FONT }.
aka . . .tinny.
 

Audioguru

Sep 24, 2016
3,656
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Sep 24, 2016
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3,656
The video shows people using a phone (no low audio frequencies and no high audio frequencies) with bone conduction but the type of transducer is unknown.

Here is the horrible frequency response of a Name Brand piezo transducer:
 

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