| 摘要 |
Charging device principally for the charging of stationary accumulators and comprising a mains transformer (L1, K1, L2) connected via a rectifying device (D10-D13) with the accumulator (B) and designed to permit the use of capacitive current limitation in the primary circuit of the mains transformer without the risk of series resonance and consequent current surges. The charging device has, according to the invention, in series with the primary winding (I1) of the mains transformer both a current limitation condenser (C1) and a safety circuit (SK) which for the purpose of preventing current surges is transferable between a high ohmic and a low ohmic circuit condition, in which connection the safety circuit for control between the two conditions is connected with a control circuit (ST) connected in series with the secondary winding L2 of the mains transformer. The control circuit is arranged to transfer the safety circuit to the low ohmic condition as soon as a predetermined value of the charging current has been reached. <IMAGE> |
