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Showing posts from December, 2022

What is an Auto Changeover Switch?

 Electricity is a very basic need in our day-to-day life. In today’s world, it is almost impossible to survive without electricity; as almost all devices from a small fan to a PC to an AC work with electricity. So, even a small amount of interruption for some period of time can hamper our lives. We get power supply from the primary source, which is directly from electrical power distribution grids. This is called a mains power supply. But, for backup purposes, in case of mains power failure, other secondary sources are used like diesel generators, UPS, or inverters. Related to both of these, we will learn about an important device that is used for power supplies – auto changeover switch. In this post, we will learn the concept of an auto changeover switch. What is an Auto Changeover Switch? Suppose you have two sources of electricity – primary and secondary. Earlier, when the mains power supply went off, the operator used to go and manually turn on the secondary source power supply...

Why is Capacitor Used in a Fan?

 In this post, we will learn the reason behind the use of a capacitor in a fan. Ceiling fan or table fan is one of the most commonly used devices everywhere. It is almost impossible to survive without a fan in an area where there is no natural ventilation or air conditioning. So, it is important to understand the importance of a fan. You must have heard that a capacitor is one of the most essential used parts of a fan. But, do you know why such a small part can affect the working of the fan? Why is Capacitor Used in a Fan? Let us first start from the basics. A fan works on a single-phase motor. You will not have heard of a fan working on three phases. So, a fan always requires a single-phase AC supply. Now, if you see the working of a motor, you will be knowing that it is a device that converts electrical energy into mechanical energy. This is due to Faraday’s law of electromagnetic induction. If electrical energy is passed through a magnet, an electromagnetic field is generated wh...