Which Transformer Is Used In Power Supply? Transformers work only with AC and this is one of the reasons why mains electricity is AC. Step-up transformers increase voltage, step-down transformers reduce voltage. Most power supplies use a step-down transformer to reduce the dangerously high mains voltage (230V in UK) to a safer low voltage. What
At What Load Will Efficiency Be Maximum? The transformer on which load is variable (like distribution transformer) is designed to give maximum efficiency at about 75% of full load. And if it is continuously operated near the full load (like power transformers), then it is designed to give maximum efficiency at or near the full
Why Are Transformers Needed? Usually, electrical utilities use high voltage in long-distance transmission wires. However, this high voltage is too dangerous for home use. In the case of electrical utilities in homes, they use transformers to change the voltage of electricity as it travels from the power plant to your home. Why do we need