Making A Simple Insect Repellent(Ultrasonic sound producer) Circuit At Home.
project·@katteasis·
0.000 HBDMaking A Simple Insect Repellent(Ultrasonic sound producer) Circuit At Home.
Yesterday I was working with this small circuit to produce Ultrasonic sound late night. This is a very small and simple project can be done using just a Timer IC and other regular components like resistors, transistors diodes etc. We can use this circuit as a insects repellent in our home/room or garden.  ***I made this for my cousin as he asked me for help since he had to submit a project at his school for some competition and I didn't know how to make one.*** The main purpose of this circuit is to produce sound frequency in Ultrasonic band. But As we know many kinds of insects have their tendency to hear an ultrasonic sound which is very irritating to them.That is how it works as insects repellent. This project is very useful to sweep away those insects like mosquito cockroach etc.And this circuit is cheap as well as easy that you can do it simply. _____ ## The Circuit Diagram I used: This is a simple circuit which I used to make this Ultrasonic sound producer, or you can say it insects repellent.  ### Components used: ```` A Speaker A Timer IC 555 2 Transistors: BC 547 & BC 557 Few Resistors and capacitors as in the circuit diagram. A 9V battery or Power supply as shown in above diagram. ```` ____ ## Assembling and testing circuit on Breadboard. I always prefer to work on a breadboard for testing purpose as much as it is possible before working on PCBs. With breadboards, I can quickly connect simple electronic circuits and test them out.This way I don't have to connect every circuit on PCBs only for testing purpose. And I can easily insert, remove or replace any components.   ***However, breadboards do not work with surface mount components since these components have short, flat pins on their sides that are designed to be soldered to the surface of a printed circuit board only.*** ____ ## Finishing on Dot PCB. Then it is much simpler and faster to apply my circuit on PCB if everything works fine on a breadboard. Here I have used a **Dot PCB** instead of **Printed PCB** since it's much cheaper and easier to work on for small projects like this.  ____ Please note that human ear can't hear ultrasonic sounds but it can affect in many ways if you stay longer time around ultrasonic sound source. I had experienced a terrible headache when I left this circuit **on** for the whole night in my room. ____
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