Mosquito Repeller

Written By: Mahmudul Hasan Shakil


I used here 555 timer Ic. for making a frequency .I also used here piezo buzzer,1.2k resistor and 10k variable resistor for increasing and decreasing frequency and two 10nf capacitor. From the calculation of astable mood we will get F=1.44/((1.2+2*1.2)*10nf)=39k HZ.


It will repel mosquito and another insects, which can’t tolerate this frequency.

Circuit diagram :




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