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Mosquito Repellent Circuit using IC 4047

Last Updated on December 26, 2024 by Admin 6 Comments

In this article we learn about an easy as well as inexpensive tested mosquito repellent circuit using IC 4047. The circuit functions to prevent the mosquitoes from the area or maybe the place in which the unit is fitted.

Based on a number of journals, the frequency released by the male mosquitoes is probably about 20-25 kHz, and thus in the likeness of ultrasound.

However based on some, it really is approximately 5-7 kHz alternatively; frequencies which a human ear, actually an aged one, can also still listen to well.

Instead of wasting big money purchasing this type of device, that additionally commonly possess a fixed frequency, we will recommending developing a single on your own , specifically because the circuit offered really is easy and low-cost to construct.

Mosquito Repellent Circuit - Tested

How this Mosquito Repellent Circuit Works

The low cost mosquito repellent circuit makes use of only a single IC 4047. This particular extremely multi-purpose IC could be configured in lots of working modules, which includes that of the multivibrator or astable applied in this article.

The working frequency is defined with the external components C1, R1, and P1. The second option assists you to marginally adjust the frequency, offered the hesitation which is out there on getting the most helpful value.

To properly replicate the high frequencies created by the generator, the output transducer employed is an ordinary tweeter, but it ideally should be a piezo one.

This kind of tweeter acts actually a lot like a capacitor, and thus does not necessarily clog the 4047 IC outputs which are not capable of delivering a considerable current.
To acquire an output signal of ample amplitude when being run by a solitary 9 V battery. The tweeter is attached between your 4047’s Q and Q outputs.

With this particular situation, it achievable to use complementary (antiphase) signals towards the tweeter so it ‘sees’ an alternating voltage of dual the supply voltage.

In strictly assumptive conditions, this quadruples the output power available. In fact, it may be preferable to consider it as tripling this, however the beneft accomplished getting into it that way is , however quite genuine.

Everything ends up to be, that you can place the unit in the center of the patio desk or next to your lounger to acquire a flavor of the peaceful of a summer’s night without having mosquitoes disturbing you acoustically or even worse, gnawing at. At the least, that is what all of us wish for you actually who make this.

The tested mosquito repellent prototype is shown below. A transformerless capacitive power supply was used here instead of a battery so that a direct mains operation could be achievedmos 1

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About Admin

Hey friends, Thanks a bunch for stopping by this site! I am an engineer with a Bachelor of Engineering in Electronics and Telecommunication. One of my passions is gathering information from all sorts of electronics books and tutorials. I then take that information and compile it into a language that is super easy to understand. My goal is to make those complex electronics circuit concepts and technical terms much more accessible for all the new and budding electronics engineers out there. I can also design customized circuit diagrams as required by the users.
If you have any questions related to this field, please do not hesitate to drop a comment! I am always here and ready to help you out with any queries you might have. I cannot wait to hear from you!

Reader Interactions

Comments

  1. prashant says

    February 19, 2018 at 1:08 am

    what is output frequency of ic

    Reply
    • admin says

      February 21, 2018 at 12:44 pm

      it will need to be experimented by trial and error

      Reply
  2. Harold Casados says

    December 30, 2017 at 7:49 pm

    I have been looking for additional tips to repelling mosquitoes naturally because my son is very prone to bites and we do a lot of camping. These mosquito bombs for the fire are a great additive to the chemical free practices we are trying to impose.

    Reply
    • admin says

      December 30, 2017 at 9:35 pm

      You can heat eucalyptus oil and use the fumes to repel mosquitoes naturally

      Reply
  3. ola says

    December 7, 2017 at 10:49 pm

    pls sir what value should we adjust the 4k7 pot resistor to on multimeter reading.thanks.

    Reply
    • admin says

      December 11, 2017 at 7:29 pm

      In the actual set up many variations, and only a very few selected one worked, you will have to experiment it practically….

      Reply

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