1. Field of the Invention
This invention relates to a battery charger.
2. Description of Related Art
A battery charger with an automatic charging cut-off circuit are described in copending U.S. application Ser. No. 07/861,392, filed Mar. 31, 1992.
In general, such automatic charging cut-off circuits include a temperature control switch which opens when the battery charge approaches a predetermined limit (e.g., 0.1 C or 10% current of rated AH) and the battery gets too hot. The charger described in copening U.S. application Ser. No. 07/861,392 uses such a temperature sensitive switch and further includes a mechanical/magnetic latch for preventing the switch from closing until removal of the battery after charging. The present invention provides an electronic latch circuit for the same purpose.
USPTO Backgrounds
USPTO Backgrounds