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Robers, E.W.J. (author), Molenaar, B.A.M. (author), Smit, W. (author), Bech, L.P. (author), Bouman, C. (author)The invention relates to an electric charger for an accumulator or a battery or the like, which is adapted for rapid charging during an on-period and comprises for this purpose control means for starting and ending the on-period. The charger is provided with a circuit for converting a supply voltage to a charging current for the battery, and...patent 2009