Is an AC battery charger effective for charging batteries?

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SUMMARY

An AC battery charger is generally ineffective for charging batteries directly due to the nature of alternating current. However, incorporating a diode that conducts in the correct direction can enable the charging process. A specific circuit example is necessary to provide a more conclusive solution. This discussion highlights the importance of circuit design in utilizing AC for battery charging.

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NotoriousNick
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AC battery charger?

Is there such a thing as being able to charge a battery, using alternating current, or would the sweeps invariably be ineffective in giving a charge to the battery?
 
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As you suspect, that would be ineffective. But adding a diode that conducts in the appropriate direction would probably solve the problem. (We would need to see a specific circuit example in order to give a more definitive answer.)
 

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