ELECTRIC HEATER FOR A MOTOR VEHICLE
First Claim
1. An electric heater for a motor vehicle, using heat generated by power semiconductors as the heat source, characterized in that several branch circuits (Z1, Z2, Zn), each with one power semiconductor (FET1, FET2, FETn) operated in high power loss operation, are connected in parallel for generation of heat.
1 Assignment
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Accused Products
Abstract
An electric heater for a motor vehicle uses heat generated by power semiconductors as the heat source. The heat output by the power semiconductors is used directly for heating. The power semiconductors are regulated by circuit regulators to be able to adjust the heating power continuously. In addition, switching devices are provided which interrupt or shut down the respective branch circuits individually in the event of short circuits in the power semiconductors.
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Citations
14 Claims
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1. An electric heater for a motor vehicle, using heat generated by power semiconductors as the heat source, characterized in that
several branch circuits (Z1, Z2, Zn), each with one power semiconductor (FET1, FET2, FETn) operated in high power loss operation, are connected in parallel for generation of heat.
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2. An electric heater for a motor vehicle, using heat generated by power semiconductors as the heat source, characterized in that
several branch circuits (Z1, Z2, Zn), each with two series-connected power semiconductors (FET11, FET12; - FET21, FET22;
FETn1, FETn2) operated in high power loss operation, are connected in parallel for generation of heat. - View Dependent Claims (5, 11)
- FET21, FET22;
Specification