Abstract: Embodiments include a flexible fabric heater. The fabric heater has a conductive base fabric having elastic properties. The base fabric may be coupled to electrical terminals. A elastomeric layer may be applied on the base fabric. The elastomeric layer may have elastic properties and includes a liquid-resistant material. A first thermal layer may be applied proximate edges along the electrical coupling between the fabric heater and the electrical terminals. The first thermal layer can have heat-resistant properties.

Abstract: A line voltage device with an auxiliary power connection for a bathing installation. An exemplary embodiment of the device includes a housing structure, and a primary electrical power connection connected to the housing structure and including a primary wiring cable for connection to a line voltage source. A load system is disposed within or adjacent the housing and configured for powered operation by electrical power from the primary electrical power connection. An auxiliary power connection is provided for electrical connection to a separate bathing installation device to provide power to the separate device. A wiring circuit is disposed within or adjacent the housing structure and electrically couples the primary electrical power connection and the auxiliary power connection so that line voltage power is shared between the load system and the separate bathing installation device.

Abstract: An electric heater includes a base, a bracket, a working head and a protecting structure. The bracket is disposed on the base. The working head is disposed on the bracket. The working head includes a supporter and a heating module. The heating module is disposed on the supporter. The heating module includes a heating element and at least two electrodes. The at least two electrodes are electrically connected with the heating element. The heating element includes a carbon nanotube layer structure. The protecting structure covers the heating module.

Abstract: A safety shut-off system and method for eliminating power to a load in the event of smoke detection. The system may comprise a device located at the appliance for detecting a signal from a smoke detector, and cutting power to the appliance only when the appliance is in use. The device may be synchronized with any standard smoke alarm signal to reduce the number of false positive shut-offs. The system may also comprise a smoke alarm hard-wired to a circuit breaker, for shutting off power to all appliances on a particular breaker upon receipt of a signal from the smoke alarm, and only when the appliances on the breaker are in use. The system may also have the ability to shut off one breaker, multiple breakers, or all breakers at different time increments to actively prevent and reduce the damages caused by fires.

Abstract: A heating control system for controlling heating of a fluid within an associated fluid vessel includes a first sensor responsive to a low fluid level in the fluid vessel and a second sensor responsive to a temperature of the fluid within the fluid vessel. The heating control system also includes a control circuit electrically connected with the first sensor and the second sensor to control electrical power to a heating unit for heating the fluid within the fluid vessel. The control circuit allows electrical power to be connected to the heating unit upon a first predetermined condition of the first sensor and a first predetermined condition of the second sensor. The control circuit disconnects power to the heating unit upon either a second predetermined condition of the first sensor or a second predetermined condition of the second sensor.

Abstract: Systems and methods for low voltage detection for a heat pump water heater are disclosed. A current sensor can be used to monitor current supplied to a inductive load, such as a compressor or evaporator fan, of the heat pump water heater. The current sensor can be coupled to a controller which receives and processes information from the current sensor to determine whether a low voltage condition of the heat pump water heater has occurred. An alert can be provided to an installer/user of the heat pump water heater that a low voltage condition has occurred. The controller can also disconnect the heat pump water heater from the power source to prevent damage to the heat pump water heater.

Abstract: The ceramic heater 20 includes the ceramic substrate 22 and a hollow shaft 40. The ceramic substrate 22 is disk-shaped, and a resistance heating element 24 is embedded in the ceramic substrate 22. The hollow shaft 40 is attached to the center of a lower surface of the ceramic substrate 22. The ceramic substrate 22 has a rail groove 26 to which a slide lid 28 is attached and a guide groove 30 that serves as a thermocouple conduit. Moreover, a tube 32 is disposed outside the shaft 40. The tube 32 extends in the up-down direction and is connected to the guide groove 30.

Abstract: A heating device and its temperature control method, wherein an NTC element envelops a core member, a sensing wire is wound around an outside periphery of the NTC element for making parallel connection of the core member with the sensing wire; further, a capacitor, the sensing wire and an electric resistor are connected in series to form an RC circuit, the RC circuit is connected with a microprocessor and a switch.

Abstract: A system and method for heating a hydrocarbon resource in a subterranean formation having a wellbore extending therein, include the use of a radio frequency (RF) source, an RF antenna to be positioned within the wellbore and a transmission line coupling the RF source and the RF antenna. A tunable choke is positioned on the transmission line between the RF source and RF antenna, and a controller is coupled to the tunable choke. The controller may be configured to tune the tunable choke to reduce a common mode current from propagating on an outside of the transmission line toward the RF source.

Abstract: A converter includes a heating bar, a water line, and a covering layer. Either the water line or the covering layer is mounted on the heating bar. The covering layer has a helical channel wound around the heating bar. Each of the water line and the helical channel is connected with a water tank and at least one nozzle. When the heating bar is conducted by the power supply, either the water line or the helical channel is heated, with air in either the water line or the helical channel being expanded to suck a liquid in the water tank into either the water line or the helical channel by a siphon principle, and with the liquid being heated successively to produce a high temperature steam which is sprayed outward through the nozzle to cook foods.

Abstract: A seal (30) for use in an electrically heated vessel comprising a container space for containing liquid and a heating element for supplying heat to the container space is intended to be used at a position inside the vessel for protecting a portion of the vessel which is present at a side of the heating element facing away from the container space from penetration of liquid from the container space. To this end, the seal (30) has an annular shape and comprises at least one resilient circumferential projection (31) extending outwardly. The projection (31) has at least one discontinuity (34) in its surface (35), whereby it is possible to stop scale particles from penetrating between the seal (30) and an inner surface of the vessel, which may otherwise occur and lead to leakage problems.

Abstract: An electrical heating device includes at least one heat generating element and at least one heat emitting element having opposed surfaces that abut the heat generating element. The heat generating element includes at least one PTC heating element having strip conductors on both sides of it for the electrical supply of the PTC heating element At least one of the strip conductor is provided with at least one contact projection which protrudes beyond a PTC heating element locating face formed on the strip conductor. Also disclosed is a heat generating element having at least one strip conductor provided with at least one contact projection.

Abstract: A low profile pass-through electrical connector is designed for aerospace applications. The connector allows voltage and current to pass-thru a conductive wing surface, while maintaining a low profile height for aerodynamic performance considerations. Examples of applications of the electrical connector include power for thin film heaters and communication antennae applications.

Abstract: A method of controlling a phase of an alternating current (AC) power having an AC voltage waveform having a predetermined cycle includes counting a number of times a zero crossing signal has been generated, the zero crossing signal being generated whenever a level of the AC voltage waveform becomes “0”; calculating a half cycle of the AC voltage waveform based on times at which the counted number of times the zero crossing signal has been generated changes; detecting phases that divide an area surrounded by a waveform corresponding to the half cycle of the AC voltage waveform into a predetermined number of equal areas; and generating control pulse signals based on the detected phases.

Abstract: A method for controlling power supply to the liquid contents of a cooking vessel or the like, particularly for controlling the electrical power supply in an induction heating system, wherein a predetermined thermodynamic state is detected and the user is alerted, comprises maintaining a predetermined high power condition after reaching the predetermined thermodynamic state for a predetermined time and then reducing the power supply to a predetermined level.

Abstract: A honey cone heater includes a lamp housing having an outer edge that forms a partial circle. The lamp housing has an opening extending from a top surface to a bottom surface of the lamp housing. The opening further extends from the outer edge into a center region of the lamp housing. A plurality of lamps is distributed throughout the lamp housing, and is configured to emit light out of the top surface of the lamp housing.

Abstract: A multiple heater control system includes cables, connectors, and junction boxes for user-friendly daisy chain connections of heater controllers and heaters in various configurations or combinations of individually controlled heater series and/or master and slave heater series. The heater controllers include process control of AC power to the heaters and upper-limit safety shutoff that is substantially independent from the process control. The heater controllers also have variable levels of control, adjustment, display, and communications functionality in a base module that is expandable to various levels with expansion modules that are attachable to and detachable from the base module. Connector, cable, and junction configurations, adapters, and latch features enhance user friendliness.

Abstract: A hob includes at least one heating zone, a temperature sensor for detecting the temperature of a cookware element placed on the heating zone, and a control unit for operating the heating zone. The control unit is constructed to heat up the cookware element in a heat-up phase and to control the temperature of the cookware element to a target temperature in a holding phase in at least one operating mode. In order to enable an energy-saving simmer operation, the control unit detects a boiling point of the liquid contained in the cookware element during the heat-up phase and determines the target temperature as a function of the boiling point.

Abstract: A heating apparatus, in particular a hob heating apparatus, with at least one heating connection for at least one heating element and at least one frequency unit. In order to provide a heating apparatus of the generic type with relatively high operational reliability, it is proposed that the heating apparatus comprises a protective unit, which is provided for determining the existence of a conducting path between the frequency unit and the at least one heating connection.

Abstract: An infrared, room heater system for installation in a wall or on a floor. An electric fan assembly draws room air into a housing, then through three parallel, air transit channels where the air is heated by infrared radiation within and about a heat exchanger assembly, and then back out into the room. One or more ceramic heating elements attached to a first copper plate emit infrared radiation when electrically energized. The first copper plate lies adjacent to, but spaced away from, a second copper plate such that radiation emitted from the heating elements reflects back and forth between the plates. Room air passed between the copper plates is heated by heat radiation concentrated between the plates, thereby achieving both energy and space efficiency.

Abstract: A heater assembly is provided that includes a substrate having opposed end portions defining raised flanges, a slot extending between the opposed end portions, and opposed chamfered surfaces extending along the slot and across the raised flanges. A plurality of layers are disposed onto the substrate, along with a pair of terminal pads. A protective cover defining at least one aperture is disposed over the layers and is secured to the raised flanges and the opposed chamfered surfaces of the substrate, and the aperture is disposed proximate the terminal pads. A pair of lead wires is secured to the pair of terminal pads, and a lead cap assembly is disposed around the pair of lead wires and is secured to the protective cover.

Abstract: A dual heater wire circuit for use with a heating pad or electric blanket includes two independent heater wire circuits. Each heater wire circuit includes a heater wire and a temperature sensor conductor. The temperature sensor conductor of each heater wire circuit is connected to a capacitor, or to a resistor, to define with the capacitor or resistor a voltage divider circuit. The juncture between the sensor conductors and either the capacitor or the resistor is provided to the input of a microprocessor. The electrical resistance of the temperature sensor conductors varies with temperature. The signal provided to the microprocessor from the voltage dividers formed between the sensor conductors of the heater wires and either the capacitor or resistor will vary in phase or voltage relative to the temperature of the heater wires. The microprocessor controls the duty cycle of the power signal provided to the heater wires.

Abstract: A circuit arrangement is provided for protecting from overheating a heating element whose resistance value is a function of its temperature. The circuit arrangement includes a power supply, a switch, and a switch control circuit, a current sensor providing a signal proportional to the current flowing through the heating element, and a first scaling device whose output provides a signal proportional to the supply voltage of the heating element. An evaluation circuit compares the difference signal determined by a first detector having an output that provides a difference signal formed from the signals of the current sensor and the first scaling device with a reference signal and the switch control circuit can be switched from a conducting state when the switch control circuit is in a first state to a non-conducting state when the switch control circuit is in a second state.

Abstract: A cartridge type heater is provided with at least one hot wire coil (13), which has two coreless coil strands (11, 12), which extend in an insulating material (50) along the two sides of a carrier wall (14). The heater includes an insulating material that is coordinated with the internal diameter of a metal jacket (2). The hot wire ends (9, 10) are provided with terminals projecting from the same end of the metal jacket (2). The hot wire coils (11, 12) are electrically connected to one another in the area of an end edge of the carrier wall (14). This edge is located in the closed end area of the metal jacket (2) and the coils are guided by spacers (45) distributed at the longitudinal edges of the carrier wall (14). At least the terminal-side end of the dimensionally stable carrier wall (14) is provided with an attached coil holder (15, 15/1), to which the hot wire ends (9, 10) are fastened under tensile stress. This keeps the windings of the hot wire coil (13) spaced apart from each other.

Abstract: A heater assembly with enhanced cooling pursuant to various embodiments described herein makes use of fluidic flow in the insulation or in the space used for insulation. By creating a natural convection or forced convection flow, the heater cools down faster, it can operate at lower temperatures and/or higher temperature precision, and it can improve temperature controllability by generating higher heat loss rates.

Abstract: An electrical heating device, which includes a housing, in which at least one heat generating element with at least one PTC element and electrical strip conductors abutting oppositely situated lateral faces of the PTC element and a plurality of heat dissipating elements arranged in parallel layers are accommodated, which are held abutted on oppositely situated sides of the heat generating element. An electrical heating device according to the invention and which fulfils the practical requirements, in particular with high voltage operation in an improved manner has at least one heat dissipating element which is situated, with the intermediate positioning of an electrically insulating layer, on the assigned heat generating element and can be electrically connected to a ground potential.

Abstract: An electrical heating device, includes a housing in which at least one heat generating element with at least one PTC element and electrical strip conductors abutting oppositely situated lateral faces of the PTC element and a plurality of heat dissipating elements arranged in parallel layers are accommodated. The heat dissipating elements are held abutted on oppositely situated sides of the heat generating element, with the intermediate positioning of an electrical insulation. In order to be capable of improved high voltage operation, at least one conducting element electrically connects together a plurality of heat dissipating elements.

Abstract: A transparency, e.g. an aircraft laminated windshield, includes one or more sensors to monitor performance of one or more properties, e.g. a heating arrangement of the windshield, and to generate signals representative of the performance of the properties. One part of a connector, external of the transparency and connected to the sensors is connected to a system positioned in the aircraft. The system receives a signal from each of the sensors, and processes the signals to determine difference between performance of the property as indicated by the signal received and a preferred performance of the property to provide real time monitoring of the performance of the windshield. With this arrangement information regarding the performance of the windshield is available to schedule timely repair or replacement of the windshield that is performing outside of acceptable limits.

Abstract: A temperature control device is disclosed that includes a heating wire being connected to an alternating current power source though a SCR, a sensing wire being disposed parallel to the heating wire, a thermo-sensitive resin insulating the heating wire and the sensing wire from each other and changing its impedance according to a change in temperature, and a temperature sensing unit outputting a temperature control signal to turn the SCR on or off according to a change in electric current flowing through the thermo-sensitive resin, in which the SCR is turned on or off by a sensing unit diode. The heating wire is heated by a heating current that flows in a heating cycle only, in which a forward voltage is formed in the SCR, and the sensing wire conducts a sensing current that flows in a sensing cycle only, in which a reverse voltage is formed in the SCR.

Abstract: The supporting frame for a helical wire heating coil assembly is initially formed in a straight linear manner using an angular cross section shape and including integrally formed linear arrays of clips for mounting insulating stand-offs, attachment tabs for mounting the assembly and open notches that permit the frame to be subsequently formed into a circular or other arcuate shape.

Abstract: Whether a temperature of a portion of a die of an integrated circuit device having a central processing device and one or more peripheral components has exceeded a first temperature threshold is determined. In response to determining that the temperature of the portion of the die has exceeded the first temperature threshold, a first thermal reduction process for a first peripheral component of the one or more peripheral components is selected and the first thermal reduction process for the first peripheral component is implemented.

Abstract: Disclosed is an automatic mattress heating apparatus which automatically heats a mattress selectively or completely. An automatic mattress heating apparatus which automatically heats a part or the entirety of a heated area of a mattress according to the number of sleeping persons or the positions of the sleeping persons. The automatic mattress heating apparatus is safely and conveniently used while properly providing heat according to the number of sleeping persons or the positions of the sleeping persons without waste of energy.

Abstract: A heater rolling pin having a roller body, stainless steel axles, hollow roller interior, roller outer surface, a handle mounted to each axle, electrical tactile switch secured to one end of the roller, a heater secured inside the roller interior, batteries and a battery holder at the opposite end of the roller. The internal heater makes the outer surface of the roller hot. The roller is manufactured from food grade aluminum alloy and is hard anodized and dyed to make the surface very hard and scratch resistant. The roller has two food quality, high density polyethylene (HDPE) plastic handles with stainless steel axles.

Abstract: This invention discloses an electronic device with a heating protection circuit and a heating protection method thereof. The electronic device includes a control module, a heating protection circuit, a heating switch module, and a heating module. The control module provides a first control signal and a second control signal via a plurality of control pins, respectively. The heating protection circuit generates a third control signal according to the first control signal and the second control signal. The heating switch module controls the heating module whether to heat according to the third control signal.

Abstract: A safety overheat protection circuit for flexible heater wire used in heating pads and electric blankets. The heater wire includes a low melt temperature fuse-able layer and a conductive core. A polymetric positive temperature coefficient (PPTC) device is used in series with the heater wire in a configuration so that a hot spot anywhere along the length of the wire will cause the fuse-able layer to melt and the heater wire to short to the conductive core, increasing the current and causing the PPTC device to change to a high impedance state significantly removing power to the heater wire. In addition, dual circuits having the same operating target temperature are presented as a safe method of temperature control.

Abstract: Operation of complex integrated circuits at low temperatures may be enhanced by providing active heating elements within the integrated circuit so as to raise the temperature of at least critical circuit portions at respective operational phases, such as upon power-up. Consequently, enhanced cold temperature performance may be obtained on the basis of existing process elements in order to provide design stability without requiring extensive circuit simulation or redesign of well-established circuit architectures.

Abstract: A dry-fire protection system and method. The dry-fire protection system includes a tank, a heating element, a powered electrode, a sensor, and a microcircuit. The heating element and the powered electrode are positioned in the tank, the powered electrode being positioned above the heating element. The powered electrode includes an electrode wire and a connector having an electrical connector coupled to the electrode wire, but electrically isolated from the tank, and a fastener for coupling the powered electrode to the tank. The sensor detects an electrical characteristic of a circuit formed by the tank, the powered electrode, and water in the tank. The microcircuit determines if a possible dry-fire condition exists based on a signal received from the sensor.

Abstract: A heating pad is provided. The heating pad includes a heating element and a control circuit operatively connected to the heating element for providing a predetermined level of power thereto. An isolation device interconnects a power source to the control circuit. The isolation device has a first open configuration preventing transmission of electrical power therethrough and a second closed configuration allowing transmission of electrical power therethrough. The control circuit terminates power to the heating element in response to the heating element exceeding a first temperature limit. The isolation device moves from the closed configuration to the open configuration in response to the heating element exceeding a second temperature limit.

Abstract: A novel method for introducing delays in self timed memories is disclosed. In the proposed method, delays are introduced by introducing a capacitance on the path of signal to be delayed. The capacitances are realized by using idle lying metal layers in the circuit. The signal to be delayed is connected to these idle lying capacitances via programmable switches. The amount of delay introduced depends on the capacitance introduced in the path of signal which in turn depends on state of the switches. The state of the switches is controlled by delay codes provided externally to the delay introducing circuitry. Since, in the proposed method, idle-lying metal capacitances are utilized, the circuit can be implemented using minimum amount of additional hardware. Also delay provided by the proposed circuitry is a function of memory cell spice characteristics and core parasitic capacitances.

Abstract: The ceramic heater 20 includes the ceramic substrate 22 and a hollow shaft 40. The ceramic substrate 22 is disk-shaped, and a resistance heating element 24 is embedded in the ceramic substrate 22. The hollow shaft 40 is attached to the center of a lower surface of the ceramic substrate 22. The ceramic substrate 22 has a rail groove 26 to which a slide lid 28 is attached and a guide groove 30 that serves as a thermocouple conduit. Moreover, a tube 32 is disposed outside the shaft 40. The tube 32 extends in the up-down direction and is connected to the guide groove 30.

Abstract: A system manages the temperature of thermoplastic material by initiating a default heating cycle in response to a sensor failure. The system may thus continue to heat the thermoplastic material according to the default heating cycle until the sensor can be repaired or replaced. A system controller implements the default heating cycle using a stored profile. That is, the controller causes a heating element to generate heat according to a default heating profile retrieved from a memory. The profile may be determined using historical heating data, user input and/or a factory setting.

Abstract: A temperature control circuit includes a microprocessor, a protection module, a temperature detecting module, and a heating module. The temperature detecting module includes a thermistor and a first switch. The thermistor is operable to sense a temperature to turn on or off the first switch for outputting a detection signal to the microprocessor and the protection module. The protection module is operable to control the microprocessor to work or reset according to the detection signal. The heating module includes a heater and a second switch. The microprocessor controls the second switch to turn on or off for making the heater work or stop working according to the detection signal.

Abstract: A seat assembly including a seat cushion, a heating element, a heating circuit, a occupant sensing circuit, and an isolation circuit. The seat cushion has a seating surface, the heating element is adjacent the seating surface and is formed of electrically conductive material. The heating circuit is coupled to the heating element for supplying electrical current to the heating element for generating heat. The occupant sensing circuit is also coupled to the heating element for sensing the presence of an occupant near the heating element. The isolation circuit is interposed between the heating circuit and the heating element for isolating the heating circuit from the occupant sensing circuit.

Abstract: A heated breathing circuit detection system verifies the proper set up and connection of a breathing circuit to a heater unit of a humidification system. The detection system automatically detects that the breathing circuit is connected to the heater unit, and the nature of the heating circuit(s) thereof. In one embodiment, the resistance of the heating circuit(s) is determined and compared to an expected resistance or range of acceptable resistances to determine if the heater circuit(s) is properly or actually attached and properly operating. The humidification system also has the ability to determine the delivery mode of the breathing circuit, i.e., whether a single inspiratory limb, or both inspiratory and expiratory limbs, is connected to the heater unit.

Abstract: Apparatus and methods for protecting a boiler and heating system from damage comprising a control board having inputs and outputs, a processor having inputs and outputs, at least one ambient sensor in communication with the processor, at least one boiler sensor in communication with the processor, a power failure relay, the power failure relay being in communication with the processor wherein the power failure relay is capable of detecting power failure of the boiler, an alarm relay connected to the control board by the at least one output and which is capable of sending notification to an alarm system. When an ambient temperature detection event occurs the ambient sensor communicates with the processor and switches the control board from passive mode to monitoring mode.

Abstract: The invention relates to constructing a heating device that employs electrical resistance foils to provide a uniform heat. In embodiments of the invention applicable for providing heat from a ceiling location, the device provides this uniform heat at a comfortable temperature.

Abstract: A control apparatus for a dryer is provided. The control apparatus provides a connection for a detecting circuit adapted to determine a clogging degree of the dryer. The control apparatus includes a power supply circuit including a heating coil arranged in a heater case, a temperature control member mounted to the heater case, the temperature control member being configured to receive power and supply the received power to the heating coil, a microcomputer that controls an operation of the dryer, and a connecting line that connects the power supply circuit to the microcomputer. The microcomputer can detect a state of the power supply circuit through the connecting line.

Abstract: An electrical heating device, which includes a housing, in which at least one heat generating element with at least one PTC element and electrical strip conductors abutting oppositely situated lateral faces of the PTC element and a plurality of heat dissipating elements arranged in parallel layers are accommodated, which are held abutted on oppositely situated sides of the heat generating element. An electrical heating device according to the invention and which fulfils the practical requirements, in particular with high voltage operation in an improved manner has at least one heat dissipating element which is situated, with the intermediate positioning of an electrically insulating layer, on the assigned heat generating element and can be electrically connected to a ground potential.

Abstract: A method and apparatus for determining a health status of a water heating device is disclosed. The water heating device may have a controller that incorporates logic to regulate the heater responsive to water temperatures detected at different areas within the water heating device by first and second sensors. Unfortunately, the first and second sensors may fail. To detect fault conditions or otherwise determine the heath status of the water heating device, a logic unit in the controller may perform a test on the first and/or second sensors so as to provide a test output. The logic unit may also determine whether the test output satisfies one or more predetermined thresholds. These predetermined thresholds may be indicative of a properly-functioning sensor. When the test output does not satisfy the at least one predetermined threshold, the logic unit may then set a fault condition indicative of improperly functioning sensors.

Abstract: A heater rolling pin having a roller body, stainless steel axles, hollow roller interior, roller outer surface, a handle mounted to each axle, electrical tactile switch secured to one end of the roller, a heater secured inside the roller interior, batteries and a battery holder at the opposite end of the roller. The internal heater makes the outer surface of the roller hot. The roller is manufactured from food grade aluminum alloy and is hard anodized and dyed to make the surface very hard and scratch resistant. The roller has two food quality, high density polyethylene (HDPE) plastic handles with stainless steel axles.