The device has a heating block comprising a radiator element that lies on a positive-temperature coefficient (PTC)-heating element. The radiator element is held in an air passage surface (8) with a housing, which is held in a sliding holder. A flow-resista...

The unit (1) has a positive temperature co-efficient (PTC) heating element (4) for heating air flowing through the unit, and a control unit (2) for adjusting amount of heat in the heating element. A temperature determination unit (3) determines cold air te...

The electrical heating device (100) has a controller that adjusts heating power by adjusting the flowing heating current. A sensor e.g. Hall sensor measures the total heating current. A calculation unit computes the momentary heating power from the measure...

The heating device (100) has a control device that adjusts heating power by modulating current flowing through an electrical heating stage. A non-volatile memory stores assignment table which assigns time period for activation of the electrical heating sta...

The device has a heat-generating element (1) comprising a positive temperature coefficient-heating element (2), and conducting lines lying at sides of the heating element for feeding current to the heating element. Heat-delivering elements form counter sur...

The device has heat-dissipating elements (3) held at opposite sides of a heat-producing element (4). The heat-dissipating elements rest against the heat-producing element under an intermediate layer of an electrically insulating layer (23). Electrical conn...

The electrical heating device has a spring counter element (22), which is provided adjacent and relocated to a spring element (20) and has support (38) for the support of a flexible switch (30). The spring counter element interacts with flexible switch in ...

The device has a housing made of plastic, and heat dissipating elements received in the housing. Electrical conductor paths lie at opposite side surfaces of a positive temperature coefficient (PTC)-element. The heat dissipating elements are arranged in par...

The method involves connecting a radiator element (10) with a positive temperature coefficient heating element, and forming a metal sheet strip (16) within a housing. A contact lug (26) is electrically connected to the metal sheet strip by plastic transfor...