This disclosure refers to a method for confectioning resistors that each comprise a PTC ceramic plate and metallic electrode layers covering opposite faces of the ceramic plate, said method comprising the following steps: measuring an electrical resistance of a resistor to be confectioned by applying an electrical potential to one of electrode layers such that an electric current flows from one of the electrode layers through the ceramic plate to the electrode layer on the opposite face of the ceramic plate, comparing the measured resistance to a target resistance, and removing, if the measured resistance is lower than the target resistance, a section of at least one of the electrode layers. This disclosure also refers to such a resistor and a heating device comprising such resistors.

A PTC heating assembly has a plurality of PTC elements and electric strip conductors between which the PTC elements are provided and which are electrically conductively connected to the PTC elements The PTC heating assembly also includes a frame which forms at least one receptacle for the PTC elements and which is provided between the strip conductors. For adjusting the heating power of the PTC heating assembly, at least two strip conductors on at least one side of the PTC elements are electrically conductively connected to PTC elements which deviate from one another.

A PTC heating assembly has a plurality of PTC elements and electric strip conductors between which the PTC elements are provided and which are electrically conductively connected to the PTC elements The PTC heating assembly also includes a frame which forms at least one receptacle for the PTC elements and which is provided between the strip conductors. For adjusting the heating power of the PTC heating assembly, at least two strip conductors on at least one side of the PTC elements are electrically conductively connected to PTC elements which deviate from one another.

A static plate heating arrangement includes a faceplate including a port extending from an exterior surface of the faceplate to an interior surface of the faceplate, a fixed resistance heater in thermal communication with the interior surface and surrounding the port, and a self-regulating heater in thermal communication with the interior surface and surrounding the fixed resistance heater. The fixed resistance heater and the self-regulating heater are electrically connected in series.

The present invention provides an infrared sauna room with a low electric field and low electromagnetic wave radiation comprising a room body, heating plates with a low electric field and low electromagnetic wave radiation and shielding lines, wherein a plurality of heating plates with a low electric field and low electromagnetic wave radiation are distributed in the room body; the first insulating layer has concave points or/and convex points; and the shielding line comprises a stranded power wire, an electric field absorbing shielding layer and a wire insulating layer. Through the above-mentioned manner, the infrared sauna room with a low electric field and low electromagnetic wave radiation can significantly reduce electromagnetic wave radiation and electric field radiation for sauna rooms.

A heat-generating element for an electric heating device includes a heating element casing which comprises a casing element formed from a ceramic material and a casing mating element formed from a ceramic material. The two casing elements bear against each other in a sealing manner and enclose, in a sealing manner between each other, a PTC element and conductor tracks. The conductor tracks bear, in an electrically conductive manner, against the PTC element and are assigned different polarities for energizing the PTC element. The heating element casing carries contact strips connected in an electrically conductive manner to the associated conductor tracks. At least one of the conductor tracks is formed by an electrically conductive element which is provided with through holes and which, in a height direction of the conductor track, comprises discrete points of support that bear against the PTC element and one of casing element and casing mating element. The present invention further relates to an electric heating device with at least one heater casing with a heat-generating element of the type described here that is arranged in a circulation chamber with a heating element casing joining at least one PTC element and contact strips energizing the PTC element as a structural unit. The heat generating element has the contact strips electrically connected to the PTC element projecting over itself. A partition wall separates the circulation chamber from a connection chamber of the heater casing. The contact strips of the PTC heating element protrude through the partition wall and are exposed and electrically connected.

A heat-generating element for an electric heating device includes a heating element casing which comprises a casing element formed from a ceramic material and a casing mating element formed from a ceramic material. The two casing elements bear against each other in a sealing manner and enclose, in a sealing manner between each other, a PTC element and conductor tracks. The conductor tracks bear, in an electrically conductive manner, against the PTC element and are assigned different polarities for energizing the PTC element. The heating element casing carries contact strips connected in an electrically conductive manner to the associated conductor tracks. At least one of the conductor tracks is formed by an electrically conductive element which is provided with through holes and which, in a height direction of the conductor track, comprises discrete points of support that bear against the PTC element and one of casing element and casing mating element. The present invention further relates to an electric heating device with at least one heater casing with a heat-generating element of the type described here that is arranged in a circulation chamber with a heating element casing joining at least one PTC element and contact strips energizing the PTC element as a structural unit. The heat generating element has the contact strips electrically connected to the PTC element projecting over itself. A partition wall separates the circulation chamber from a connection chamber of the heater casing. The contact strips of the PTC heating element protrude through the partition wall and are exposed and electrically connected.

A range has burner coil elements which have temperature switches as a portion of the replaceable coils. Upon reaching a predetermined temperatures, the switch opens and power through the burner element is secured. The burner elements are preferably open coil units. Lowering the temperature in a cooking utensil below common ignition temperatures while still allowing boiling is an objective of many embodiments.

A pedestal is provided that includes a body, a heater embedded in the body, a support pocket formed within the body having a surface disposed in a first plane, a peripheral surface disposed in a second plane surrounding the support pocket, and a plurality of centering tabs positioned between the support pocket and the peripheral surface, each of the centering tabs having a surface disposed in a third plane that is between both of the first and second planes.

A pedestal is provided that includes a body, a heater embedded in the body, a support pocket formed within the body having a surface disposed in a first plane, a peripheral surface disposed in a second plane surrounding the support pocket, and a plurality of centering tabs positioned between the support pocket and the peripheral surface, each of the centering tabs having a surface disposed in a third plane that is between both of the first and second planes.