Mosquito Repeller Circuit. Further it can also be used as a simple buzzer alarm circuit. Various mosquito repellent solutions like coils liquid vaporizers and creams all have possible adverse effects to health.
Therefore appropriate is required control. You can t hear that sound of mosquito repeller because the sound is in ultrasonic range but you can test the output to test it disconnect the buzzer take a multimeter turn it in ac voltage measurement keep the probes of multimeter at the output that is the two point terminals where the buzzer is connected if it shows the reading of ac voltage your circuit is working you can also test it in another way take a frequency meter connect the probes of frequency meter in the output of circuit if. But using often chemicals no good for everyone.
Therefore appropriate is required control.
In the circuit connects two transistors q1 q2 into a bistable multivibrator oscillator to generate a sound frequency. You can t hear that sound of mosquito repeller because the sound is in ultrasonic range but you can test the output to test it disconnect the buzzer take a multimeter turn it in ac voltage measurement keep the probes of multimeter at the output that is the two point terminals where the buzzer is connected if it shows the reading of ac voltage your circuit is working you can also test it in another way take a frequency meter connect the probes of frequency meter in the output of circuit if. Therefore appropriate is required control. Mosquitos are annoying especially while sleeping so most people use chemicals because the chemicals are high efficiency.
