Friday 13 July 2018

Buzzer Driver Circuit


Recently, I have ordered smt-0440-t-r buzzer from Mouser.


Circuit is as shown in figure.


enter image description here


Microcontroller pin transmits square wave of 4kHz as mentioned in the datasheet. However, the sound isn't audible. When I am at a distance of 1-2cm from the buzzer, I am hearing very low intensity sound. Any fixes?




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