Skip to Content
Find More Like This
Return to Search

Electrical leakage detection circuit

United States Patent

September 5, 2006
View the Complete Patent at the US Patent & Trademark Office
A method is provided for detecting electrical leakage between a power supply and a frame of a vehicle or machine. The disclosed method includes coupling a first capacitor between a frame and a first terminal of a power supply for a predetermined period of time. The current flowing between the frame and the first capacitor is limited to a predetermined current limit. It is determined whether the voltage across the first capacitor exceeds a threshold voltage. A first output signal is provided when the voltage across the capacitor exceeds the threshold voltage.
Wild; Arthur (Chillicothe, IL)
Caterpillar Inc. (Peoria, IL)
10/ 742,884
December 23, 2003
U.S. GOVERNMENT RIGHTS This invention was made with government support under the terms of Contract No. DE-FC04-2000AL67017 awarded by the Department of Energy. The government may have certain rights in this invention.