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Topic: 12V SMD buzzer with arduino Uno (Read 1 time) previous topic - next topic

AJITnayak

Dear all

I am trying to turn on  12v buzzer using Arduino Uno board. I am looking for ckt that can drive 12v buzzers.
https://www.mouser.in/ProductDetail/CUI/CMI-9651S-SMT-TR?qs=sGAEpiMZZMsK322k1rNFfaMXH2n0OtZrcFI%252BfdFEB%2Fy2rxGMppf1tg==
 I am thinking to use this buzzers.

Before test experiment i have few doubt on buzzers . i here by requested to give suggestion on same.

usually buzzer have 2 pins  pos and neg 
1) weather giving 12V and GND it will turn on buzzer??

I have tested 1 buzzer where i could give 12 v but it wont produce sound.

2) Usually datasheet says operating frequency of 2khz . Here i have created duty cycle of 2khz and turn on PWM pins high and low for 2khz of speed .

These test done with speakers . Is it same case w.r.t buzzers??


3) what will be recommended buzzer my application. I am trying to use it for indication if any fault or sensor failure it has to give sound.
https://startingelectronics.org/beginners/circuits/arduino-buzzer/
weather this circuit more than enough


AMPS

DVDdoug

Quote
usually buzzer have 2 pins  pos and neg  
1) weather giving 12V and GND it will turn on buzzer??

I have tested 1 buzzer where i could give 12 v but it wont produce sound.
That is a "buzzer", not a transducer/speaker.   It has a built-in oscillator and it's supposed to make sound when powered with DC.   The datasheet shows the terminal near the chamfered corner is negative.

Maybe yours is defective, or maybe you connected it backwards and you fried it,


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2. Usually datasheet says operating frequency of 2khz . Here i have created duty cycle of 2khz and turn on PWM pins high and low for 2khz of speed .

These test done with speakers . Is it same case w.r.t buzzers??
There are two kinds of piezo devices - Transducers/speakers that need an AC signal and buzzers that have a built-in oscillator circuit.    

Sometimes transducers are mis-named as buzzers by "cheap" sellers on eBay, but you have a link to the actual datasheet and this is a buzzer that makes sound when DC voltage is applied.

Quote
3) what will be recommended buzzer my application. I am trying to use it for indication if any fault or sensor failure it has to give sound.
https://startingelectronics.org/beginners/circuits/arduino-buzzer/
weather this circuit more than enough
That circuit should work.   The datasheet says 7-15V so you do need a driver circuit.   You don't need PWM, and a buzzer won't work properly with PWM.

You can drive a piezo transducer with 5V directly from an Arduino I/O pin using the tone() function but it may not be as loud.    You can also drive it through a transistor if you need more voltage to make it louder.

Ajit_nayak

That means buzzers will work directly on operating voltage. Means if I give 12v or rated voltage it produce sound. Like in speakers we don't need pwm signal to generate sound

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