Control of mosquitoes is something important in the present day, as with a rising number of mosquito-borne illnesses. The various pesticides herbicides and other repellents like coils, liquid vaporizers, and creams are toxic and are a risk to human health. Here electronic mosquito repellent is an emerging technology, which is cheap, eco-friendly effective, and produces no risk at all. We make a mosquito-repellent circuit, it is capable of emitting ultrasonic energy of varied frequencies.
These frequencies do effects the hearing senses of insects and mosquitoes and make them uncomfortable in their compliance. This mosquito-repellent circuit generates an ultrasonic sound with a high output frequency that allows the spreading of mosquitoes within a wide radius. The oscillation frequency is given by the value of the resistor and a capacitor component. The electronic mosquito repellent circuit can be supplied from a 9V DC power supply.
Hardware Required
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | IC | NE555 Timer | 1 |
| 2. | Buzzer | 6V | 1 |
| 3. | Resistor | 3.3KΩ,2.2KΩ | 1,1 |
| 4. | Variable Resistor | 10KΩ | 1 |
| 5. | Capacitor | 0.1uF | 1 |
| 6. | Connecting Wires | – | – |
| 7. | Battery | 9V | 1 |
Circuit Diagram
Working Explanation
As we can see, this circuit consists of a timer IC 555 and a piezo buzzer element. We have connected Buzzer at the output (PIN 3) of the 555 timer IC so that a sound of desired frequency can be generated. This circuit will produce a KHz range pulse that is reproduced as sound by the buzzer. We human cannot hear that sound but this will irritate mosquito and keeps mosquito away. Here the IC 555 is connected with components to produce astable pulses, these pulses are reproduced as sound by a buzzer, which can be varied by R3 resistance.
Applications
Can be used in homes and workplaces.
