A thermally-sensitive cantilever sensor switch with a bimorph structure based on phononic cantilever structure. Phononic structure increases switch sensitivity to incident absorbed radiation. In embodiments the zero power switch is sensitive to ambient temperature and/or incident absorbed radiation. In embodiments, multiple switches are configured within a spectrometer to provide a means of monitoring toxic components within a media of interest such as smokestake effluents and hot emitters. The switch may be structured with sensitivity to incident radiation within wavelength bands ranging from ultraviolet (UV) to MHz.

A cooktop appliance having a temperature switch is generally provided herein. The cooktop appliance may include a panel, an electric heating element, an infinite switch, and the temperature switch. The electric heating element may be positioned at the panel and include a first terminal and a second terminal. The infinite switch may be electrically coupled to the electric heating element to control power thereto. The infinite switch may include a primary voltage path and an auxiliary voltage path independent from the primary voltage path. The temperature switch disposed in thermal communication with the electric heating element, the temperature switch being in alternate communication with the primary voltage path below a predetermined threshold temperature and with the auxiliary voltage path at or above the predetermined threshold temperature.

Provided is a heat generating heater for a cigarette-type electronic cigarette device. A heat generating heater for a cigarette-type electronic cigarette device is configured by at least a portion of the length being inserted into a cigarette and comprises: a main body which is made of a ceramic material and has an end portion pointed for penetration into the cigarette; a heat generating unit which is disposed to surround the circumferential surface of the main body to generate heat for heating the inside of the cigarette; an arrangement hole which is formed in the main body along the longitudinal direction thereof; and a temperature sensing unit which is disposed in the arrangement hole for measuring a heating temperature of the heat generating unit.

A heating device includes a base, resistance heating elements, a power control circuit, a first temperature detector, a second temperature detector, a power interrupter, and control circuitry. The resistance heating elements are arranged in a longitudinal direction of the base and electrically connected in parallel. The first detector detects a temperature of a first resistance heating element. The second detector detects a temperature of a second resistance heating element. The power interrupter interrupts power supplied to the resistance heating elements when the temperature of the second resistance heating element becomes a predetermined temperature or more. The control circuitry controls the circuit such that a temperature of each resistance heating element becomes a predetermined temperature, based on a result of detection of the first detector, and interrupts the power supplied to the resistance heating elements when the second detector detects predetermined temperature information regarding the second resistance heating element.

This disclosure relates to a heat sensitive electrical safety device with a manually resettable device and an automatically resettable fuse. The manually settable fuse prolongs the serviceable life of the automatically resettable fuse.

A power circuit for controlling power to a heating element includes an electric resistive element and a thermal switch assembly in series. The thermal switch assembly includes a first contact connected to the electric resistive element, a second contact, and a bimetal element configured to electrically connect and disconnect the first and second contacts. The bimetal element establishing an electrical connection between the first and second contacts when a temperature of the bimetal element is below a predetermined cut-off temperature, and no longer electrically connecting the first and second contacts when the bimetal element is at or above the predetermined cut-off temperature. A first voltage is applied to the electric resistive element when the bimetal element electrically connects the first and second contacts and a second voltage, lower than the first voltage, is applied to the electric resistive element when the bimetal element electrically disconnects the first and second contacts.

Described herein are molecular inks, methods for printing the molecular inks on flexible substrates, and methods for forming printed electronic elements, such as resistive heaters, force sensors, motion sensors, and devices that include these elements, such as force responsive conductive heaters. The methods include printing a molecular ink on a flexible substrate that is heated to 30? C. to 90? C. before and/or during the printing process and curing the substrate to produce a conductive pattern thereon. The molecular inks generally include a particle-fee metal-complex composition formulated from at least one metal complex and a solvent, and optionally, a conductive filler material, and/or surfactant.

A cooktop appliance includes a bimetallic switch is positioned adjacent an electrical heating element. A first electrical conduit is coupled to a first terminal of the electrical heating element and is configured to operate at a first voltage, L1, with respect to ground. A second electrical conduit is configured to operate at a second voltage, L2, with respect to ground. A relay is configured such that the relay connects the second electrical conduit to a second terminal of the electrical heating element when the bimetallic switch is in the first configuration and is also configured such that the relay connects a neutral electrical conduit to the second terminal of the electrical heating element when the bimetallic switch is in the second configuration.

A cooktop appliance or heating element, as provided herein, may include a thermostat within the heating zone of the heating element. The thermostat may include a base and a top cap held on the base. The heat transfer disk may be joined to the thermostat at the top cap.

A heating pad with a thermostatic control circuit coupled to a resistance heating element. The resistance heating element and an acrylic based polymer adhesive are glued between polyester film layers. The film layers and heating element are contained with a plastic sleeve. The thickness and properties of the polyester film and adhesive forms a fuse. The adhesive delaminates the polyester film at excessive temperatures causing the resistance heating element to sever thereby creating an open circuit that halts operation of the heating pad. The thermostatic control circuit includes a hysteresis circuit that compares analog signals across two thin film resistors to provide a control signal to a power controller to selectively vary the power output to the heating element. The thermostatic control circuit is an integrated circuit board disposed within the fused plastic sleeve.