Definition and Working Principle of Transformer. Definition of Transformer. Electrical power transformer is a static device which transforms electrical energy from one circuit to another without any direct electrical connection and with the help of mutual induction between two windings. It transforms power from one circuit to another without changing its frequency but may be in different voltage level. It depends upon Faraday's law of electromagnetic induction. Actually, mutual induction between two or more winding is responsible for transformation action in an electrical transformer. Faraday's Laws of Electromagnetic Induction. According to these Faraday's laws. The alternating current through the winding produces a continually changing flux or alternating flux that surrounds the winding. If any other winding is brought nearer to the previous one, obviously some portion of this flux will link with the second. As this flux is continually changing in its amplitude and direction, there must be a change in flux linkage in the second winding or coil. According to Faraday's law of electromagnetic induction, there must be an EMF induced in the second. If the circuit of the later winding is closed, there must be an current flowing through it. HOW RF TRANSFORMERS WORK AND HOW THEY ARE MEASURED. C Voltage, current step-up or step-down. TRANSFORMER CIRCUITS AND IMPEDANCE RELATIONSHIPS.TRANSFORMER (Working Principle). Working Principle of Transformer (3D Animation) - Duration. Step-up & Step-down Transformer - Duration. What is the working principle of a transformer? What is the working principle of transformer? Transformer is a type of machine which is used to step up or step down the voltage.and works on the principle of mutual. Basic working principle of operation under no load condition. Step down transformer Step up. WHAT IS A TRANSFORMER? Transformer works on the Principle of Faraday’s Law of Mutual Induction. Step Down Transformer. Home » Basic Concepts » Transformer, Construction, Working, Types Application & Limitations. Transformer, Construction, Working. This is the simplest form of electrical power transformer and this is the most basic of working principle of transformer. Whenever we apply alternating current to an electric coil, there will be an alternating flux surrounding that coil. Now if we bring another coil near the first one, there will be an alternating flux linkage with that second coil. As the flux is alternating, there will be obviously a rate of change in flux linkage with respect to time in the second coil. Naturally emf will be induced in it as per Faraday's law of electromagnetic induction. This is the most basic concept of the theory of transformer. Here in our above example it is first winding. Here in our example it is second winding. What is a step down transformer: is one whose secondary voltage is less than its primary voltage. It is designed to reduce the voltage from the primary winding to the secondary winding. This kind of transformer “steps down. The control transformer would step down the 480 V to 120 V for the control. So, it is desired to be linked to almost all flux of primary winding to the secondary winding. This is effectively and efficiently done by placing one low reluctance path common to both of the winding. This low reluctance path is core of transformer, through which maximum number of flux produced by the primary is passed through and linked with the secondary winding. This is the most basic theory of transformer. Main Constructional Parts of Transformer. The three main parts of a transformer are. Primary Winding of Transformer- which produces magnetic flux when it is connected to electrical source. Magnetic Core of Transformer- the magnetic flux produced by the primary winding, that will pass through this low reluctance path linked with secondary winding and create a closed magnetic circuit. Secondary Winding of Transformer- the flux, produced by primary winding, passes through the core, will link with the secondary winding. This winding also wounds on the same core and gives the desired output of the transformer.
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