Today we explore about Why transformer is used in AC power supply?, Why do transformers need an AC source to operate?, Why does the transformer work in alternating current?
Why transformer is used in AC power supply?
A transformer is used in an AC power supply to efficiently change the voltage levels between different parts of the power distribution system. This capacity is crucial for transmitting electrical power over long distances. High voltage transmission reduces energy losses due to the lower current required for the same power, which minimizes resistive losses in transmission lines. Once the high voltage power reaches its destination, the transformers override it to levels that are safer and usable for residential, commercial or industrial use.
A transformer is used in AC because its operating principle is based on electromagnetic induction, which requires a changing magnetic field to induce a voltage in the secondary winding. Alternating current (AC) inherently provides this changing magnetic field because it continuously varies in magnitude and direction. This makes the transformers very efficient and effective for use with AC, allowing easy adjustment of voltage levels as needed.
Why do transformers need an AC source to operate?
In an AC power network, a transformer is used to ensure efficient and flexible distribution of electrical energy. It allows power generated at power plants to be transmitted at high voltage, reducing transmission losses, and then stepped down to lower voltages suitable for consumer use. This adaptability is essential for maintaining a stable and reliable electricity network, as it allows voltage to be precisely controlled to meet the requirements of different stages of the distribution network.
Why does the transformer work in alternating current?
The purpose of an AC transformer is to facilitate the safe and efficient transmission and distribution of electrical energy. By increasing voltage for long-distance transmission and holding it for local distribution and end-user applications, transformers help optimize the entire power system. This process reduces energy loss, improves safety and ensures that electrical devices receive the correct voltage for their operation.
Transformers operate on AC and not DC because they rely on the principle of electromagnetic induction, which requires a changing magnetic field to induce an electromotive force (EMF) in the secondary winding. Alternating current (AC) provides this changing magnetic field as it varies cyclically. In contrast, direct current (DC) provides a constant magnetic field, which does not induce a varying EMF in the transformer secondary winding. Therefore, transformers cannot operate with DC and are specifically designed to operate with AC for voltage transformation purposes.
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