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You are here: Home / Home Electrical Circuits / Make this Electronic Mosquito Repeller Circuit

Make this Electronic Mosquito Repeller Circuit

Last Updated on February 28, 2020 by Swagatam 23 Comments

In this post we discuss about a simple electronic high frequency mosquito repellent circuit, which is supposed to drive away mosquitoes through its tuned high frequency pulses.

Introduction

Mosquitoes can be considered as one of the most irritating bugs that not only trouble us a lot but have the potentials of spreading deadly diseases. These never seem to end, the more we find ways of eliminating them the more they come.

There are plenty of methods that have been developed today for tackling this issue, take for example the electrocuting bat, the mosquito repelling creams, coils, mats etc.

All of these may look effective but have never been the ideal method of termination. However there is one more method which is though quite controversial may be considered as the most efficient ways of all, provided the results are accurately optimized.

Here we are discussing the method which probably is able to drive away the mosquitoes with the help of frequency generations. Researchers have found that bugs and insects are typically allergenic to a certain spectrum of frequency level called the ultrasound frequency.

This frequency is beyond the hearing range of the humans, but can cause a lot of uneasiness to the insects and also to animals like dogs and cats.

Though it can be debatable, there have been scientists and many folks around who have found this method pretty useful for controlling mosquitoes.One sample circuit has been presented here which has been specifically devised for generating sound at the ultra frequency levels.

Circuit Operation

The proposed electronic mosquito repeller circuit cannot be considered “the be all and the end all”, but definitely has plenty of space for experimentation.

If the settings are done impeccably, and hits the “bull’s eye”, you could be just lucky. The idea is very simple and involves below ordinary components. A couple of transistors and a couple of capacitors with some resistors is all you would need.

The circuit is configured as a astable multivibrator, the selected components set the circuit to oscillate at the intended frequency.

The slight imbalance with the symmetry (different capacitor values) of the circuit has been intentionally so that the generated waveform is symmetrical, another aspect that is important for implementing the proposed results successfully.

The frequency is outputted over a piezo electric transducer which is the best interpreters of frequencies, typically at very high levels.

The given pot should be tried at different levels and tested in a mosquito infested area, it may be further optimized until, hopefully some positive and encouraging effects are observed, meaning if you finally see the mosquitoes actually fleeing.

Piezo Transducer

piezo transducer



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About Swagatam

I am an electronic engineer (dipIETE ), hobbyist, inventor, schematic/PCB designer, manufacturer. I am also the founder of the website: https://www.homemade-circuits.com/, where I love sharing my innovative circuit ideas and tutorials.
If you have any circuit related query, you may interact through comments, I'll be most happy to help!

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  1. Search Related Posts for Commenting

  2. Alfredo says

    Sir, what is the frequency range of the piezo transducer ?

    Reply
    • Swagatam says

      It is around 40 kHz

      Reply
  3. Alfredo says

    hello can you be more specific on specification/ model of the piezo transducer ? thanks !!

    Reply
  4. youngking says

    Good morning sir, sir is about this Mosquito Repeller Circuit the transducer is of two type, the two terminal and three terminal. which one can serve the purpose. next for generating 20 herz frequence which value of resistor and capacitor can one use.

    Reply
    • Swagatam says

      Youngking, Both will work, for 3 terminal piezo, ignore the center wire connection

      Reply
  5. Aruna says

    Hello brother….
    Did you test this circuit …
    I was try some circuits like this one. but nothing any sucess.
    nothing happend to mosquitos
    please help…
    Aruna

    Reply
    • Swagatam says

      Hello Aruna, I personally have not tested it, but the circuit might work if the frequency perfectly matches the level that may be most disturbing for the mosquito.

      Reply
  6. nitin chaudhari says

    Hello sir, can I use this circuit to run small 3v dc motor, with different speed like pwm??

    Reply
    • Swag says

      Hi Nitin, yes you can try it in the transistor strobe light article, using the second design, not the above.

      Reply
  7. Nsonic says

    Pls can I power this circuit with 9v battery? And were you able to lay your hand on (Arun’s) same circuit?

    Reply
    • Swag says

      you can try with a 9V supply, I am sorry I did not get any email from Mr. Arun regarding the concept so far…

      Reply
  8. Nsonic says

    Pls I need a circuit with two push button.if the first button is pressed the relay should open after 5min and it should remain that way even if the power is off and re-on,except the second button is pressed to changed the state of the relay to its normal state.pls help me.thanks

    Reply
    • Swag says

      without power the circuit will reset, so it is difficult to create something that will continue to hold its state even without power….it will require a of thinking.

      Reply
  9. Nsonic says

    Pls can I power this circuit with 9v battery? And were you able to lay your hand on (Arun’s) same circuit?

    Reply
  10. syed shafiudeen says

    Anyone did this do it works well?

    Reply
  11. syed shafiudeen says

    Any body did this circuit and do it works well?

    Reply
  12. Cia Brisat says

    hi swagatam,

    i am a farmer, and need a simple repelling device for use in agricultural equipment, so i can reduces insecticide use.

    device features;
    a. solar powered with rechargeable battery.
    b. a multi pulse repeller, keeps changing the ultrasonic pulse it emits. prevent pests from getting used to the sound.
    c. effective range: up to 5000sf.
    d. ultrasonic frequency: from 13.5khz to 95khz.
    e. dual speaker or more.

    could you please help me with a circuit diagram?

    thank you.
    cia brisat

    Reply
    • Swagatam says

      Hi Cia,

      I'll try to design it and publish it soon in my blog.

      Reply
  13. Arun Dev says

    I have snt u an email ( to hitman2008@….. ). Plz check it out sir.

    Reply
  14. Arun Dev says

    Of course i will sir.
    On searching the internet about this topic in deep, i got several verified projects based on this, one of those saying that at high frequencies , the insect will think that some sort of dragonfly is coming to catch them and will fly away from the area. I believe thz to an extend since this statement can be true. What z ur opinion about this ?
    Would you mind telling me how much does the piezo buzzer costs ?

    Reply
    • Swagatam says

      I hope it's true and you succeed with your project.
      the cost of the recommended 27mm piezo element would be hardly some rupees, may be Rs.5/-

      Reply
  15. Arun Dev says

    Sir,
    First of all thank you very much for all your valuable supports given for my water controller project. It is working perfectly. Now i am in the middle of making multi insect repellent which can be used for repelling all types of insects, even dogs, cats etc could be repelled. Before proceeding further, let me ask you two questions:-
    1). Have you heard about any insect repellent circuit which is completely functioning or any such products in market ?
    2). What type or buzzer to be used for freq. upto 90 Khz ? Can an ordinary 8 ohm 0.5 W buzzer will function atleast in freq. range of 20-30 Khz ?
    Expecting ur reply soon as b4.

    Reply
    • Swagatam says

      Hi Arun,
      congrats on your success!

      I personally am very sceptical about this concept, according to me frequencies cannot drive away insects.

      Standard speakers will not produce 90kHz, you can use piezo transducers for it.

      Do let me know the results if you are actually trying out any such circuit.

      Reply


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