Kabelwerke Reinshagen Gmbh

Delphi Technologies, Inc.

Klaus-Dieter Schmitz

Heinz-Werner Schlamm

Manfred Gundel

A test circuit is disclosed for testing the continuity of a load circuit, such as a vehicle lamp circuit, and indicating a discontinuity when the load circuit is either energized or de-energized. The test circuit comprises an indicating circuit with an LED and a switching transistor in series and a voltage divider for biasing the transistor to a conductive state. The detecting circuit includes a reed switch which is closed in response to load current for connecting a point on the voltage divider to ground to switch the transistor off. The detecting circuit also includes current blocking means such as a diode for connecting the voltage divider to ground through the load circuit so that the transistor is switched off when there is continuity in the load circuit to ground.

Growing community of inventors

Wuppertal, Germany

Klaus-Dieter Schmitz