Patent ID: 6875962
Filing Date: 2005-04-05
Classification: B60H,F24H,H05K

Abstract:
1. An electric heating system for motor vehicles comprising: at least one electric heating element; a control circuit to control the power dissipated by the at least one electric heating element; the control circuit including at least one power semiconductor arranged on a circuit board; wherein an underside of the circuit board, opposite the side that the at least one power semiconductor is arranged on, is connected to an electrically grounded metal plate by a solid matter connection; wherein the metal plate is electrically insulated from conductor paths located on the underside of the circuit board and carrying a voltage in relation to the grounded electric potential; wherein the control circuit is arranged in a housing; wherein at least one heat sink is provided outside the housing; and wherein the metal plate is connected by thermally conductive connectors to the at least one heat sink.