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Basic materials to repeat the experiment: Power supply with AC output: https://amzn.to/3cFnW5B Test leads: https://amzn.to/2ZK7Ggw or https://amzn.to/3ccYzHA Test leads with alligator clip: https://amzn.to/3gtRMg3 or https://amzn.to/2TL0kp6 UniT multimeter: https://amzn.to/3gu2Hqc or https://amzn.to/3etQ9gK Fluke multimeter: https://amzn.to/3gtjOYV Transformers to experiment and disassemble: https://amzn.to/3gtjRUB https://amzn.to/2ZGHP96 https://amzn.to/2zrvc7f https://amzn.to/2TJgkIj We all use transformers in our daily lives to power electronic devices that are powered by direct current. But do you know how a single-phase transformer works, what elements it consists of, what the transformation ratio is... These and many other useful concepts are shown in the video in an experimental way while introducing the basic theory about electrical transformers. If you really want to understand how and why a transformer works, don't miss the video.