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Jump start and reverse battery protection circuit

  • US 6,891,350 B2
  • Filed: 10/08/2004
  • Issued: 05/10/2005
  • Est. Priority Date: 10/04/2002
  • Status: Expired due to Fees
First Claim
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1. A jump start circuit for electrical connection between a DC power source and a jump start post, said jump start circuit comprising:

  • an electromechanical switch configured to be coupled between said DC power source and said jump start post, 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;

    means to monitor the voltage of said DC power source and said jump start post;

    means to process the voltage measurements;

    means to close said switch based on detection of a first predetermined condition, said first predetermined condition comprising at least one of said voltage of said DC power source and said voltage of said jump start post being within a predefined range for a predefined period of time; and

    means to open said switch based on detection of a second predetermined condition said second predetermined condition comprising at least one of said voltage of said DC power source and said voltage of said jump start post exceeding a threshold value for a predefined period of time.

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