There’s a good chance that right now, as you read this, you may be surrounded by a few motors in your vicinity. At least two in your laptop/computer, one in the ceiling fan, one in the exhaust fan and many more as you visit each room of your house!
It can be said that today’s modern lifestyle is impossible without these motors! Electric motors are easily one of the most important inventions for humankind. Today we’re going to learn how to make one for ourselves! A really simple DIY with everyday stuff around you – not big enough to power anything huge but just enough to blow your mind! Let’s get started on this DC Motor DIY journey. Before putting on your creator’s hat, let’s first understand what an electric motor is!
The principle behind and electric motor
An electric motor is used to convert electrical energy into mechanical energy. Similarly, when you convert mechanical energy into electrical energy, it’s called a generator. The working of an electric motor is based on the fact that a current-carrying conductor produces a magnetic field around it. And once you introduce a magnet into this circuit, the conductor will move. If it’s shaped like a coil, it will rotate. Why does this happen?
The magnetic field of the magnet interferes with that produced by the electric current flowing in the conductor. Since the coil has become a magnet, one side of it will be attracted to the north pole of the magnet and the other to the south pole. This causes the coil to continuously rotate.
Still wondering how all this happens? Guess which scientific phenomenon is the cause of all this? Look closely at your hands, the answer is right there!
We are talking about Fleming’s Right Hand Rule and Left Hand Rule. You can read all about it here.
There are various types of motors, so here’s a quick diagram of its many types:
While they’re all really exciting and efficient for their specific uses, today we are building the Permanent Magnet DC Motor type. Let’s get started!
There you have it! A small specimen of what’s inside your fan, toys and many other gadgets. In fact, the vibrating function in cell phones is also achieved through a tiny DC motor inside! Motors, motors everywhere yet only one in front of you, the one you built yourself! While you may understand everything about this motor, can you guess,
What does it take to reverse the direction of the coil’s spinning?
How can you increase the speed of this motor?
Take a guess in the comments section below!
Charu, a feminist and an accidental writer, is yet to master the art of writing about herself. Always curious to learn new stuff, she ends up spending a lot of time unlearning the incorrect lessons. She enjoys all sorts of stories – real, fictional, new, old, hers and would love hearing yours too. Feel free to ping her at firstname.lastname@example.org to share anything that you think is worth sharing.
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