Transformer works on the principle of

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In this tutorial about transformer basics, we will se that a transformer has no internal moving parts, and are typically used because a change in voltage is required to transfer energy from one circuit to another by electromagnetic induction. One of the main reasons that we use alternating AC voltages and currents in our homes and workplace’s is that AC supplies can be easily generated at a convenient voltage, transformed (hence the name transformer) into much higher voltages and then distributed around the country using a national grid of pylons and cables over very long distances. The reason for transforming the voltage to a much higher level is that higher distribution voltages implies lower currents for the same power and therefore lower I 2*R losses along the networked grid of cables. These higher AC transmission voltages and currents can then be reduced to a much lower, safer and usable voltage level where it can be used to supply electrical equipment in our homes and workplaces, and all this is possible thanks to the transformer basics of the Voltage Transformer. A Typical Voltage Transformer The Voltage Transformer can be thought of as an electrical component rather than an electronic component. A transformer basically is very simple static (or stationary) electro-magnetic passive electrical device that works on the principle of Faraday’s law of induction by converting electrical energy from one value to another. The transformer does this by linking together two or...

What is an Ideal Transformer? Definition: A transformer that doesn’t have any losses like copper and core is known as an ideal transformer. In this transformer, the output power is equivalent to the input power. The efficiency of this transformer is 100%, which means there is no loss of power within the transformer. ideal-transformer Working Principle of Ideal Transformer An ideal transformer works on two principles like when an electric current generates a When the current flows through the primary coil then it creates a magnetic field. The two windings are wrapped in the region of a very high magnetic core like iron, so the magnetic flux supplies through the two windings. Once a load is connected to the secondary coil, then the voltage and current will be in the indicated direction. Properties The properties of an ideal transformer include the following. • The two windings of this transformer have small resistance. • Because of the resistance, eddy current and hysteresis there are no losses in the transformer. • The efficiency of this transformer is 100% • The total flux generated in the transformer has restricted the core & connects with the windings. Therefore, its flux & inductance leakage is zero. The core has unlimited permeability so a negligible magnetomotive force is necessary to arrange the flux within the core. An ideal transformer model is shown below. This transformer is ideal in three conditions when it has no leakage flux, no windings resistance and no iron...

Transformer When an alternating voltage is applied to the primary winding, it induces an emf in the primary winding due to the alternating nature of the magnetic field created due to AC supply and static conductors. According to Faraday’s Law of electromagnetic induction, there must be relative displacement between field and conductors, and in this case, the field is alternating and conductors are constant. Because of which an emf is induced in the primary winding of the transformer. Induced emf in the primary winding creates an alternating flux in the primary winding. Flux links the secondary winding of the transformer by passing through the core of the transformer. This is called mutual induction. An emf is induced in the secondary winding. And based on the number of turns on secondary winding, the magnitude secondary induced emf is calculated. Autotransformer Working Principle Now consider the autotransformer circuit diagram shown below. As compared to two winding transformers as shown in Figure 1, Autotransformer has single winding. When an alternating supply is given to the primary circuit, because of Faraday’s Law of electromagnetic Induction, an emf is induced in the primary part. Since the magnetic field is alternating in nature, and conductors are stationary. Autotransformer The induced emf in primary produces a flux, which is called as primary winding flux. This flux links the secondary winding and induces an emf on secondary winding due to mutual induction. Henc...

• Product Information • Solenoid valve • Ball valve • Butterfly valve • Check valve • 5/2 & 4/2-way pneumatic valves • All product information • Selection Criteria & Wizards • Valve sizing calculator • Chemical resistance table • Solenoid valve selection guide • Thread standards • AC or DC coil • All selection criteria & wizards • Application Examples • Pneumatics • Reverse osmosis • Irrigation • Vacuum • Compressor • All application examples • Installation & Troubleshooting • Solenoid valve installation • Electric ball valve installation • Common solenoid valve issues • Preventing solenoid valve noise • Replacing a coil • All installation & troubleshooting • Support Figure 1: Transformer A transformer is an electromagnetic device that converts electrical energy from one circuit to another without changing its frequency or power. Transformers help to improve the efficiency and safety of electric power systems by raising and lowering voltage levels as and when needed. The transformer works only on an alternating signal at its input, but with the addition of a few semiconductor devices, it can produce direct current (DC) signals as well. This article discusses the main types, wiring, applications of transformers, and how to use a transformer to produce DC. Table of contents • • • • • • • View our online selection of transformers! • • • • • Transformer working principle A transformer works on the principle of electromagnetic induction, which states that a current-carrying con...

Want create site? Find Transformer Definition A device consisting of two or more windings coupled by a magnetic core that is used to transform a balanced set of three-phase voltages from one voltage level to another without changing the frequency. The transformer is an essential element of an electrical power system. It is among the primary reasons for the far-flung utilization of AC power systems. It makes power generation possible at the most efficient voltage, transmission system and distribution at the most economic voltage levels, and electric power usage at the most appropriate voltage. The electric transformer is also extensively applied to measure very high voltages using voltage or potential transformers and very large currents using a current transformer). Additional salient uses of transformers include impedance matching, Insulating one electric circuit from another. Transformer Working Principle A single-phase transformer fundamentally comprises two main windings coupled up by a magnetic core. When one of the windings (common refer as primary) is linked to an AC power source, a time-varying flux is generated in the core which links the second winding (commonly referred as secondary winding). Consequently, a voltage is induced in the secondary winding. When an electrical load is connected to the secondary winding, a secondary current starts flowing. A single-phase transformer unit is exemplified in Fig 1. The primary and secondary windings have N1 and N2 turns r...

In some of our previous articles we have discussed about the Power transformer. It is very widely used for stepping up and stepping down the voltage at the electrical power generating station and distribution station (or substation) respectively. For example, consider the block diagram shown above. Here power transformer is used two times while delivering electric power to a consumer who is far away from the generating station. • First time is at power generating station to step-up the voltage generated by the wind generator. • Second is at the distribution station (or substation) to step-down the voltage received at the end of the transmission line. Power Loss in Transmission Lines There are many reasons for using a power transformer in electrical power systems. But one of the most important and simple reason for using the power transformer is to reduce power losses during electric power transmission. Now let’s see how power loses is reduced considerably by using a power transformer: First, the equation of Power loss P = I*I*R. Here I = current through the conductor and R = Resistance of conductor. So, power loss is directly proportional to the square of the current flowing through the conductor or transmission line. So lower the magnitude of current going through the conductor lesser the power losses. How we will take advantage of this theory is explained below: • Say initial voltage = 100V and load draws = 5A & power delivered = 500watt. Then transmission lines here hav...