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Leak detecting circuit for power source device

  • US 6,833,708 B2
  • Filed: 11/27/2002
  • Issued: 12/21/2004
  • Est. Priority Date: 03/30/2001
  • Status: Expired due to Fees
First Claim
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1. A leak detecting circuit for a power source device having a cell unit comprising a plurality of cells connected in series, wherein a pair of positive and negative power lines extending from respective opposite electrodes of the cell unit are connected to each other by four voltage dividing resistors (R1A, R1B, R2A, R2B) connected to one another in series, a midpoint between the two voltage dividing resistors (R1A, R1B) arranged on the positive power line side and the two voltage dividing resistors (R2A, R2B) arranged on the negative power line side being grounded, and the potential difference between the positive power line and the midpoint between the two voltage dividing resistors (R1A, R1B) on the positive side and the potential difference between the negative power line and the midpoint between the two voltage dividing resistors (R2A, R2B) on the negative side are compared with respective reference voltages to detect a leak.

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