A car seat heater has an improved energy efficiency, which includes a heating wire which is coupled to a car seat and includes a metal-plated carbon fiber, a seat temperature sensor configured to detect temperature of the heating wire, and a variable temperature controller configured to control temperature of the heating wire according to a diameter of the metal-plated carbon fiber and a thickness of a plated metal thereof.

A method of producing an electric heating device, in particular for automotive application, includes steps of: cutting through a sheet of electrically highly conductive material of appropriate thickness for obtaining a predetermined line pattern having at least one electrically conductive line with electrically conductive bridge members interconnecting portions of the at least one electrically conductive line; depositing a layer of curable adhesive material onto a surface of a dielectric, planar, flexible carrier; placing the obtained line pattern onto the layer of adhesive material; curing the adhesive material below the line pattern with the exception of the adhesive material below the bridge members; cutting through each bridge member at all ends between portions of the at least one electrically conductive line interconnected by the respective bridge member; and removing the cut bridge members.

A vehicle seat includes a first heater which heats a first region, a second heater which heats a second region different from the first region, and a controller connected to the first heater and the second heater. The controller is capable of executing PWM control under which current applied to the first heater and the second heater is regulated by setting current-application timeframes within a unit time period, wherein a first current-application timeframe that is a period within the unit time period in which current is applied to the first heater and a second current-application timeframe that is a period within the unit time period in which current is applied to the second heater, as set under the PWM control, are shifted relative to each other when current is applied to the first heater and the second heater.

Embodiments include a heating blanket. The heating blanket may include a heating element and a shell covering the heating element. The heating element has elastic properties and is disposed in the shape of a sheet. The shell may have one or more sheets of polymeric material bonded together adjacent a perimeter of the heating element. One or more wires having malleable properties are secured within the shell. The wires allow the heating blanket to be secured to a patient.

A climate controlled system comprising: a movable member disposed in a recess of a cushion and forming part of an occupant support surface with the cushion; a heater overlaying the cushion and the movable member, the heater including: a flexible substrate, a heating element, and an adhesive layer, wherein the flexible substrate includes adhesive on opposing longitudinal edge regions and the adhesive directly or indirectly connects the heater to the cushion; and wherein the adhesive layer anchors the heater as the flexible substrate stretches or moves with the movable member as the movable member moves.

A heater having a cover and a heating element. The heating element is configured to generate heat that is transferred through the cover via radiative heating and/or conductive heating. The cover has a thermal effusivity in a range of about 20-300 Ws.sup.(1-2)/m.sup.2K

A system and a method for controlling a power MOSFET for limiting electromagnetic interference from a load is provided. The system and method include a pulse-width-modulated (PWM) control voltage to operate the power MOSFET in accordance with its Ohmic region (linear mode). By operating the power MOSFET in its Ohmic region, the electromagnetic field generated by the load is reduced, without requiring a dedicated DC/DC converter that would otherwise increase the cost, size, and weight of the power electronics.

A vehicle seat includes a first heater which heats a first region, a second heater which heats a second region different from the first region, and a controller connected to the first heater and the second heater. The controller is capable of executing PWM control under which current applied to the first heater and the second heater is regulated by setting current-application timeframes within a unit time period, wherein a first current-application timeframe that is a period within the unit time period in which current is applied to the first heater and a second current-application timeframe that is a period within the unit time period in which current is applied to the second heater, as set under the PWM control, are shifted relative to each other when current is applied to the first heater and the second heater.

A method that includes supplying an amount of power to a thermal system to effect a temperate change of a touch surface; determining a rate of the temperature change of the touch surface; comparing the determined rate of the temperature change to a predetermined rate threshold; and changing the amount of power supplied to the thermal system after the comparing step based on whether the determined rate of temperature change is less than or greater than the predetermined rate threshold.

The planar unit is made up of a base material and a linear body to be arranged on the base material, the linear body being one of or both a heater wire and a sensor wire, wherein a thermal fusion bonding part is formed on an outermost layer of the linear body, and either the planar unit includes a sewing thread that couples the linear body and the base material to each other, the sewing thread penetrating into the thermal fusion bonding part of the linear body or the planar unit includes a sewing thread mark created by melting of a sewing thread that couples the linear body and the base material to each other, the thermal fusion bonding part of the linear body and the sewing thread mark having been planarized. In the steering wheel, the planar unit is installed between the wheel core material and the covering material.