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Electronic Circuit mosquito repellent circuit. Making simple and easy. Entegeresi circuit 555 is used. Wave output between 200 Hz and 62 kHz are available. 555 Entegresi by a power frequency of the buzzer , buzzer frequency is converted by the annoying sound for mosquitoes .  Mosquito Repellent Circuit Diagram

MOSQUITO REPELLENT ELECTRONIC CIRCUIT DIAGRAM It uses IC CD4047 to control the buzzer timing utilizing resistor and capacitor. When the voltage passing through the transistor, the buzzer would sound.     Variable resistor R1 : 10K ohm     Polar capacitor C2 : 4.7 nF/16V     Capacitor C3 : 22uF     IC1 : CD4047     NPN transistor Q1-Q2 BC547     PNP transistor Q3-Q4 BC557     Buzzer K1 : Tweeter 8 ohm     Power supply : 12V