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In today’s electrical systems, safety and efficiency are crucial. To protect appliances, circuits, and people from electrical hazards like short circuits and overloads, we need reliable devices to cut off the power supply. Among the most common protective devices are MCB (Miniature Circuit Breaker), Electric Fuse, and MCCB (Molded Case Circuit Breaker). While all three … Read more
As the world shifts towards sustainable and renewable energy sources, solar energy has emerged as a frontrunner. Harnessing the power of the sun to generate electricity is not only eco-friendly but also increasingly cost-effective. This blog post delves into the intricate process of how solar energy is transformed into electrical energy, highlighting the technology behind … Read more
Oil-immersed transformers are critical components in power distribution systems. These transformers handle high voltages and play a crucial role in ensuring reliable electricity supply. One essential auxiliary device used in these transformers is the Oil Surge Relay (OSR). In this blog post, we’ll explore what OSRs are, how they work, and their significance in protecting transformers. … Read more
A logical AND Gate has two inputs and 3 inputs depending upon the application. It performs a logical multiplication rule to operate which means (A.B=Y). If either of the input is low (0) or (<5V), it gives the output signal also low. Whereas if all the inputs are in high state (1) or (=5V), the … Read more
When a conductor cuts a magnetic field, a dynamically induced EMF (voltage) is produced in it. Also, magnitude of induced EMF is directly proportional to the rate of change of flux linkages. So this is called Faraday’s law of Electromagnetic Induction. Magnet stationery No current Induces Magnet moving Current Induces The formula for Faraday’s law of … Read more
What is Lenz’s law? Lenz’s law states that the time-varying electromotive force produces a time-varying current, again this current produces EMF or Back EMF. So the polarity of the induced EMF is opposite to the previous time-varying EMF. Lenz law was given by Sir Emil Lenz. This Law decides the direction or polarity of the … Read more
In the Power System of Electrical Engineering, when the receiving end voltage in an AC transmission line is greater than the sending end input voltage, it is called as Ferranti effect. Remember, it only dominates in a Long transmission line whose length is greater than 200 Km. Also, this effect occurs more effectively when the load is … Read more
Firstly, Corona Effect or Discharge are the same things. Electrical discharge caused by the ionization of the fluid (air) surrounding a conductor which is already charged electrically is known as the corona discharge or effect. this is the continuous waste of the energy. This is a spontaneous process and occurs naturally in High voltage (H.V.) … Read more
A Rectifier is a Power electronics device that helps to convert AC signal to DC signal. An AC signal has two polarities changing continuously. Every load cannot take an AC signal. So we need a DC supply for them. A half-wave and full-wave rectifier convert AC to DC signal. Half wave rectifier gives discontinuous rippled … Read more
What is the PIV rating or Peak Inverse Voltage rating? A PIV rating or Peak inverse voltage rating is defined as the value at which a Semiconductor device can withstand or sustain, beyond this value voltage device damage permanently. In short, the P-N junction barrier is damaged because of the high inverse voltage or the … Read more