A system and method for controlling power includes a power source, a plurality of primary control circuits, a load, at least one secondary control circuit, a switch circuit, and a control channel. The plurality of primary control circuits are connected to control load power from the power source to respective ones of a plurality of load power inputs. The load is configured to receive power from the plurality of load power inputs. The at least one secondary control circuit is connected to the power source, and the switch circuit is connected between the at least one secondary control circuit and the plurality of load power inputs. The control channel is configured to control the switch circuit to connect the at least one secondary control circuit to a selected one of the plurality of load power inputs.

A heating device capable of suppressing electrically conductive parts that electrically connect power supply electrodes and heating resistors from generating heat. The heating device has heating resistors disposed in a longitudinal direction of an elongated base plate and connected through electrically conductive parts to power supply electrodes disposed on one longitudinal end portion of the base plate and supplied with electric power from the power supply electrodes. The electrically conductive parts are formed such that electrically conductive parts that can provide larger amounts of power supply each have a larger cross-sectional area perpendicular to a power supply direction.

A device includes at least a first electrically conductive contact plate, at least a second electrically conductive contact plate and a plurality of heating elements connected electrically in parallel. Each of the plurality of heating elements includes at least one resistance heating unit, respectively. Each of the heating elements is connected by means of a first connecting contact to the heating elements is connected by means of a first connecting contact to the first contact plate and by means of a second connecting contact to the second contact plate, in which both contact plates lie in a common first plane. The resistance heating units are arranged along a spiral or arched line around a center of the device. To expand the service life of the device at reduced manufacturing costs, a plurality of heating units are arranged consecutively or nested with each other along the ached or spiral line, and both the first and second contact plates comprise interlocking comb-like contact extensions.

One example of a heating element includes a first carbon nanotube (CNT) layer and a second CNT layer. At least a portion of the first CNT layer overlaps at least a portion of the second CNT layer, and the first CNT layer includes a first perforated region having a plurality of perforations. Another heating element includes a CNT sheet with a first perforated region having a plurality of perforations and a first perforation density and a second perforated region having a plurality of perforations and a second perforation density different from the first perforation density. A method of forming a heating element includes perforating a first CNT layer so that it includes a perforated region and stacking the first CNT layer with a second CNT layer such that at least a portion of the first CNT layer overlaps at least a portion of the second CNT layer.

Apparatuses, systems and methods of providing heat to enable an FDM additive manufacturing nozzle having refined print control and enhanced printing speed. The heating element may include at least one sheath sized to fittedly engage around an outer circumference of the FDM printer nozzle; at least one wire coil at least partially contacting an inner diameter of the sheath; and at least one energy receiver associated with the at least one wire coil.

A pre-fabricated heatable media line having at least one pipe- and/or hose-type media line, at least one line connector located on the end of said line and at least one pre-fabricated heating element, the pre-fabricated heating element including at least two heating element portions connected in at least one circuit and at least one of the heating element portions extends over at least part of the at least one line connector and the at least one pipe- and/or hose-type media line in order to heat the at least one part of the line connector and the at least one pipe- and/or hose-type media line. In said pre-fabricated heatable media line, at least one of the heating element portions is designed as a mixed stranded wire having a number of stranded individual wires consisting of at least two different materials.

A heater element having an electrically insulating substrate, a buss layer made of a conductive material, and a resistive layer that includes a first patch of a first resistive material. The first buss layer has a first buss and a second buss extending from terminals of the heater element to a heating area of the heater element. The first resistive material is applied in a first selected location in the heating area so as to provide electrical communication between the first buss and the second buss and to enable an electrical current to flow through the first resistive material. The resistive layer includes a second patch of a second resistive material. The second patch is applied in a second selected location in the heating area so as to provide electrical communication between the first buss and the second buss, the second selected location being different from the first selected location.

Embodiments of substrate supports with a heater are provided herein. In some embodiments, a substrate support may include a first member to distribute heat to a substrate when present above a first surface of the first member; a heater coupled to the first member and having one or more heating zones to provide heat to the first member; a second member disposed beneath the first member; a tubular body disposed between the first and second members, wherein the tubular body forms a gap between the first and second members; and a plurality of substrate support pins disposed a first distance above the first surface of the first member, the plurality of substrate support pins to support a backside surface of a substrate when present on the substrate support.

A heater assembly is disclosed herein. The heater assembly may comprise a tubular body. The tubular body may include a graphite core disposed in a heating path. The graphite core may be coated with an overcoat layer. The tubular body may include slits that may cut-off heat transfer between portions of the tubular body. The heater assembly may have a configuration comprising a plurality of heating rungs having a predominant portion disposed substantially perpendicular to an upper surface of the heater so that the predominant portion is disposed vertically. The heater assembly may include a flange at a first end and a lip at a second end. The heater assembly configuration provides a heater that exhibits reduced thermal stress and/or reduced CTE mismatch stress particularly compared to other designs.

A sheet includes a conductive film, and bus bars including an upper and lower bus bars connected to upper and lower sides of the conductive film. The conductive film includes a recess, a first region between the upper bus bar and the lower bus bar, a second region that is another region between the upper and lower bus bars, and openings in the first region. The upper or lower bus bar is formed along a side of the conductive film including the recess. The first region is between a bus bar at which the recess is positioned and another bus bar facing the recess. A distance between the upper and lower bus bars is shorter in the first region than in the second region. The openings are formed in an upper or a lower part of the first region on a side of the another bus bar.