| 摘要 |
According to the invention, lead storage batteries are charged by intermittently switching on and off a battery-charging unit (1, 2, 3) which is connected to a battery. The on and off times are suitably about 1 second when charging a battery. In the case of a maintenance charge, it is suitable to charge the battery with pulses in the region of a mains voltage period, with pauses of about 10 seconds. The circuit is suitably broken by means of a switch (4, 5) on the primary side of the transformer (1, 2). The switch may have the form of a relay with associated time circuit (4), although it is preferred to use a triac.
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