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Amplifier substitute PAM8403 class D amplifier

Discussion in 'Audio' started by SarahG, Sep 8, 2018.

  1. SarahG

    SarahG

    1
    0
    Sep 8, 2018
    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
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,191
    2,693
    Jan 21, 2010
    You were given exactly what you asked for. That part uses the PAM8403.

    Connect it up exactly the same way.
     
    VenomBallistics likes this.
  3. 73's de Edd

    73's de Edd

    2,696
    1,092
    Aug 21, 2015
    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: Sep 8, 2018
  4. Audioguru

    Audioguru

    2,598
    586
    Sep 24, 2016
    I think those piezo transducers will sound awful.
     
    73's de Edd likes this.
  5. 73's de Edd

    73's de Edd

    2,696
    1,092
    Aug 21, 2015
    "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.
     
  6. Audioguru

    Audioguru

    2,598
    586
    Sep 24, 2016
    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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