Power discontinuity sensor for dual feed heatable windshield.

摘要

A power discontinuity sensor for a heatable windshield with bus bars having a double lead configuration. Sensor lines extend around the perimeter of the windshield in close proximity to adjacent bus bars or leads. The sensor lines are provided with current from an upper bus bar through a connecting bridge along the upper bus bar. Voltage in the sensor lines is monitored and current to the bus bars is interrupted in response to predetermined variations in the measured voltage.