Patent ID: 6803743
Filing Date: 2004-10-12
Classification: H02J

Abstract:
A jump start circuit for electrical connection between a DC power source and a jump start post, said jump start circuit comprising:a switch configured to be coupled between said DC power source and said jump start past, said switch having a closed state and an open state; a resistive element coupled between said DC power source and said jump start post, said resistive element being positioned in parallel with said switch to enable said DC power source to supply a voltage to said jump start past; and a microprocessor being capable of receiving a signal, being capable of measuring voltage at said DC power source and said jump start post, and being further capable of processing the voltage measurement, wherein said microprocessor commanding said switch to close based on a detection of a first predetermined condition, and commanding said switch to open based on a detection of a second predetermined condition, wherein said first predetermined condition comprises a result of processing the voltage measurements falling within an allowable range of values, and wherein said second predetermined condition is selected from a group consisting of: a result of processing the voltage measurements falling outside an allowable range of values, a voltage at said jump start post exceeding a predefined range for a predefined period of time, a signal indicating a movement of a vehicle, a signal indicating an automatic transmission selector being placed into reverse or drive gear, and a signal indicating a manual transmission being placed into gear.