Electronic Mosquito Repellent Circuit Ppt. 3 the capacitor charges through resistors ra and rb at a certain point voltage at threshold pin is less than the capacitor voltage. The ic possesses an oscillation frequency ranging from 670 to 680 hz.
Mosquito repellent circuit diagram project report page link. 4 this causes a change in timer output. 1 once the switch is closed the 555 timer gets the power supply.
2 the inner circuit initially the capacitor voltage will be zero and hence voltage at threshold and trigger pin will be zero.
This electronic mosquito repellent is based on the 555 timer ic is a simple and useful mosquito repellent the mosquito repellent circuit generates an ultrasonic sound with a high output frequency that allows spreading mosquitoes within a wide radius. The circuit is quite simple and require few external components. Friends in this circuit i will show you how to make electronic mosquito repellent circuit using 555 timer ic simple homemade mosquito repellent friends it. 3 the capacitor charges through resistors ra and rb at a certain point voltage at threshold pin is less than the capacitor voltage.
