Charger connected to a load via a switching circuit to prevent an incorrect polarity connection
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United States of America Patent
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Aug 10, 2004
Grant Date -
Sep 4, 2003
app pub date -
Mar 31, 2003
filing date -
Jun 28, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to an electronic circuit for a power supply device (1), in particular for a charger (2) for accumulators (3), in which the power supply device (1) is connected via input terminals (4, 5) to a power source (6), the power supply device (1) converting the supplied power from any voltage, in particular an AC voltage, into a DC voltage and this transformed power is forwarded via output terminals (7, 8) to a consumer (9), in particular the accumulator (3), in which, a switching element (10) is provided as a means of operating polarity reversal protection. The switching element (10) is disposed between at least one output terminal (7, 8) and a potential, in particular a negative potential, of the power supply device (1) and if a specific polarity appears at this output terminal (7, 8) the switching element (10) is connected through and if an opposite (incorrect) polarity appears it is switched off. The output terminals (7, 8) are disconnected separated from the input terminals (4, 5), in particular from the power source (6), by the power supply device (1).
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