Ultrasonic Pest Repeller circuit
It is well know that pests like rats, mice etc are repelled by ultrasonic frequency in the range of 30 kHz to 50 kHz. Human beings can’t hear these high-frequency sounds. Unfortunately, all pests do not react at the same ultrasonic frequency. While some pests get repelled at 35 kHz, some others get repelled at 38 to 40 kHz. Thus to increase the effectiveness, frequency of ultrasonic oscillator has to be continuously varied between certain limits.
Read more Source: http://www.electronic-circuits-diagrams.com/homegardenimages/homegardenckt1.shtml
Related Links
Mosquito repellent circuit
Insect repellent circuit
Ultrasonic mosquito repellent circuit
Ultrasonic Pest Repellent by CD4013
Insect repellent device using ic 4047
MOSQUITO REPELLANT by IC 555, 4017, 4011
Related Posts :
Insect repellent device using ic 4047 This is a small circuit insect repellent, mosquitoes and birds, or other methods to produce high frequency audio signals. To interfere with the hearing of insects. Make it insufferable, wings to escape in the end. Operation of this circuit is used IC1 number ...
This is Circuit MOSQUITO REPELLANT. By High Frequency Sound. Use a electronics part ,easy to find and low cost. To See Circuit, have IC 555, 4017, 4011 and BC337,BC327. Output Piezo Speaker. Volt suppy +12V. Easy to build see PCB: Related Links Mosquito repellent circuit I ...
This is a small circuit insect repellent, mosquitoes and birds, or other methods to produce high frequency audio signals. To interfere with the hearing of insects. Make it insufferable, wings to escape in the end. Operation of this circuit is used IC1 number 4047. A duty to produce frequenc ...
It is well know that pests like rats, mice etc are repelled by ultrasonic frequency in the range of 30 kHz to 50 kHz. Human beings can’t hear these high-frequency sounds. Unfortunately, all pests do not react at the same ultrasonic frequency. While some pests get repelled at 35 kHz, some o ...
They will be swarming once again, the unwanted, winged torturers, looking for the victims and leaving behind swelling and itch! The mosquito problem is a part of everyday life, espacially during the summer. Since the immemorial, inventive people have struggled hard to find effective means of ...
or 
