Technical articles on Electronics and Electrical Engineering topics focused on Basics of EE, Electronic components, power systems and equipment used for generation, transmission, operation, and controls of electricity.
Galvanic isolation is the process of separating different sections of electrical circuits for stopping current flow while allowing the required amount of information to flow through these sections. Galvanic isolation is used in cases where two or more circuits having different ground should communicate with each other. Let’s discuss three types of Galvanic Isolation methods: … Read more
Francis, Kaplan and Pelton turbines are most popular types of turbines. The use of a particular type depends on the head of power plant, the required RPM, the output power and the type of flow. Given below are 3 popular types of hydroelectric turbines: Turbine type Head Speed Output Power Flow type Francis Low & … Read more
In one of the previous articles, we learned Top 10 advantages of Hydroelectric power stations. Alongside numerous advantages, there are a couple of disadvantages associated with hydroelectric power generation. Given below is a list of these disadvantages. Forests are submerged and the ecosystem is badly damaged, the case is more evident when the dam reservoirs … Read more
A power plant which utilizes the potential energy of water for generating electricity. In a Hydroelectric power, plant water is stored using a dam, the water is lead down to in penstock and hits the turbines that are synchronized with the rotor of the generator. The motion of rotor produces electricity at the stator terminals. … Read more
A thermal sensor is an electrical sensor which measures temperature and produces an electrical signal whose magnitude depends on the change in temperature. Resistance thermometer (RTD) RTD or resistance thermometer consists of a long fine wire (made of copper, nickel or platinum) that is usually wrapped around a ceramic or glass core. Working principle: Based … Read more
You might have noticed that your electrical outlet has three terminals: Hot, Neutral and Ground. The electrical current passes from hot (red) moves through equipment and comes back to the outlet through neutral (black). The above circuit is perfectly up and such simple configuration can keep the device up and run. While such a circuit … Read more
An Electrical Converter is any device which takes some form of power and converts it to any other form. It can either change the nature of power (ac/dc), can change it’s (voltage/current properties) or can change its phase number or frequency. Practically there are hundreds (if not thousands) of such converters. Given below are top … Read more
Question: How to start a three-phase motor using Single phase supply? The single phase should be supplied to the pair of winding simultaneously with a start capacitor in series with the third winding. The figure below illustrates the circuit configuration of the process: A switch is added with the start capacitor and is opened upon … Read more
The actual size of any resistor depends on its wattage rating. The higher its size, the higher the watts it can handle. The chart below presents the power rating of different resistors and their sizes. Remember that actual size may vary. 1/8 Watt Resistor – 1.8 x 3 x 28: It handles 13.88 mA when connected … Read more
Electrical Bus bars is the structure which carries a huge amount of power. A bus bar is the most important structure in the substation where power is gathered for further substitution. Depending on the voltage level, reliability and flexibility, a bus bar can be arranged in different configurations. Given below is the list of 8 different … Read more