PCB Mount Buzzer Showing Random Nature
The thing is I have made a simple circuit using Atmega8 at 4mhz internal clk, have interfaced a PCB mount piezo buzzer with 100ohm resistance with mcu pin. Its working okay one time then it stops working, then when I test the buzzer with external 5V dc it found okay, then again for some time its working fine then again stop working. Is it necessary to interface buzzer via a transistor to mcu pin ?
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