- #1
scarabdrums
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I conducted a transformer efficiency experiment using a 240/110V double wound transformer, first with one heater connected in series then with two connected in parallell. What I don't understand is why when both (identical) heaters are connected current almost doubles on the primary side. Why is this? How can the primary side 'tell' if more power is needed. I am just a beginner at this so please explain in relatively layman terms please! All replies much appreciated.