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Device-the specs say that it needs 6v 4aa batteries or an ac adapter with 4.5v dc output why is there this difference 6v and 4.5 apart from the obvious that the device manufacturers set?
Wiki User
∙ 15y ago
ANSWER Near the end of battery life, "1.5V" batteries can droop to about 1.1V, but still have some life left. (The curves are very different for different battery chemistries, so this is not always the case.) In other words, with a 4.5V adapter, the internal regulator works fine. With four batteries that have discharged below 1.1V, the internal regulator is probably near the minimum input voltage for operation.
Wiki User
∙ 15y ago
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