Patent ID: 6160381
Filing Date: 2000-12-12
Classification: H02H,H02J

Abstract:
A battery protection circuit, comprisinga switch assembly for controlling connection of a battery output to a load;a detector for detecting a resistance at a load terminal;a first comparator for comparing the detected resistance to a predetermined maximum value and producing a first output signal if the resistance is above said predetermined maximum value and a second output signal if the resistance is below the predetermined maximum value;a second comparator for comparing the detected resistance to a predetermined minimum value and for producing a third output signal if the resistance is below the predetermined minimum value and a fourth output signal if the resistance is above the predetermined minimum value; anda second detector connected to the outputs of the first and second comparators for producing a control signal to close the switch assembly if the detected resistance is in a predetermined range between the minimum and maximum values and to open the switch assembly if the resistance is outside said predetermined range, whereby the battery is connected to the load only when the detected load resistance is between the predetermined minimum and maximum values.