Please download the dossier by clicking on the dossier button x
×

Electrical leakage detection circuit

  • US 7,102,356 B2
  • Filed: 12/23/2003
  • Issued: 09/05/2006
  • Est. Priority Date: 12/23/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for detecting electrical leakage between a power supply and a frame, comprising:

  • actuating a transistor switch to connect a first capacitor between the frame and a first terminal of the power supply for a first predetermined period of time;

    limiting the current flowing between the frame and the first capacitor to less than a predetermined current limit;

    determining if a voltage on the first capacitor exceeds a threshold voltage; and

    providing a first output signal when the voltage on the first capacitor exceeds the threshold voltage,wherein the transistor switch is coupled in series between the first capacitor and the frame.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×