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    interfacing buzzer with 8952

    hey!
    how to interface a +5V buzzer with IC 89S52.
    someone suggested me to use two bc547 npn transistor.
    this is its schematic.


    Click image for larger version. 

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    i want to know basically what is this circuit doing?

    •   Alt30th November 2012, 19:10

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    Re: interfacing buzzer with 8952

    Interfacing Of a Buzzer Using Microcontroller 89C52/89S52
    http://allaboutlearningandearning.bl...zer-using.html

    “Let the future tell the truth, and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I have really worked, is mine.” Nikola Tesla



    •   Alt30th November 2012, 19:58

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    Re: interfacing buzzer with 8952

    ohk ! that means it can also be controlled with one transistor.
    but what if we use two transistor as shown in the circuit.



    •   Alt30th November 2012, 20:15

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    Re: interfacing buzzer with 8952

    Its buzzer you dont need two transistors. You can use second transistor if you have different voltages for buzzer and uC or something similar.

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    This thread is created in wrong group.
    “Let the future tell the truth, and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I have really worked, is mine.” Nikola Tesla



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    Re: interfacing buzzer with 8952

    ok may be the circuit i was provided with was wrong or was for other purpose.
    anyway i got your point.
    thank you



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    Re: interfacing buzzer with 8952

    Buzzers are often small current devices, used for some beep signaling, or in some variants can produce songs.

    Do you remmember old dialup modems from the time of Indiana Jones , when dialing buzzers give sounds for dial tone, handshaking,....

    - - - Updated - - -

    See this link:

    PIEZO BUZZER: MELODY – BIRTHDAY SONG
    http://tutorial.cytron.com.my/2011/0...birthday-song/
    “Let the future tell the truth, and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I have really worked, is mine.” Nikola Tesla



    •   Alt30th November 2012, 20:40

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    Re: interfacing buzzer with 8952

    Just go through this thread and you'll get all the required information: http://www.edaboard.com/thread272422.html

    Diagram from that thread:



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    Re: interfacing buzzer with 8952

    There are two types of buzzer.
    1) Give Supply and get sound
    2) Give Pulses and get sound.



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