Mosquito Repeller Circuit. But using often chemicals no good for everyone. Which the signal of this circuit is determined by both resistors r2 r3 and both capacitors c1 c2.
Mosquito repellent circuit limitations. 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. Portable mosquito repellent circuit as you know piezoelectric transducers tricycles have a capacitive character of the load.
Mosquitos are annoying especially while sleeping so most people use chemicals because the chemicals are high efficiency.
But using often chemicals no good for everyone. According to the theory of scientists found that mosquitoes do not like the high frequency sound waves. 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.
