Understanding Auto Transformers and Winding Transformers-2 — Lesson 5

This lesson covers the comparison between auto transformers and winding transformers. It delves into the numerical problems related to these transformers and explains how to derive various voltage levels from an auto transformer. The lesson also discusses how to calculate the currents in different parts of the auto transformer. For instance, if you have a two-winding transformer, this lesson will guide you on how to use it as an auto transformer.

Video Highlights

02:00 - Explanation of the polarity in winding transformers
16:49 - Discussion on how power is delivered from the primary to the secondary side in an auto transformer
28:41 - Calculation of the KVA transferred by transformer action and by direct electrical connection
30:30 - Conclusion and request for viewers to try several combinations of connecting the two coils in series

Key Takeaways

• Calculating currents in different parts of an auto transformer is crucial for its effective operation.
• A two-winding transformer can be used as an auto transformer, expanding its functionality.