Charger device
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United States of America Patent
Stats
-
May 12, 2015
Grant Date -
Apr 25, 2013
app pub date -
Oct 19, 2012
filing date -
Oct 25, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A charger device includes a switch, a rectification circuit, a DC/DC converter, and an automatic disconnecting circuit. The automatic disconnecting circuit is connected to the switch, the battery, the rectification circuit, and the DC/DC converter. The automatic disconnecting circuit automatically disconnects the charger device from the alternating current power source when the battery is fully charged. The automatic disconnecting circuit includes an inductor, a first resistor, a capacitor, a second resistor, a third resistor, a comparator, a switch element and a relay. The relay comprises a coil and a normally-open switch. The normally-open switch turns on or off according to the switch element to control a connection between the charger device and the alternating current power source.
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