An apparatus, system and method for wirelessly powering a device. The apparatus, system and method may include a primary coil housing that houses a primary coil; a secondary coil housed within the device and suitable for having power induced therein responsive to the primary coil; an isolator that at least partially mechanically and electrically isolates the primary coil from the secondary coil; and a plurality of paired feedback sensors respectively communicatively and physically associated with, and paired as between, the primary coil housing and the device, wherein the plurality of paired feedback sensors exchanges indications regarding performance of the secondary coil, and wherein performance of the primary coil is modified responsively to the indications.

According to various embodiments, an electronic device attachable to and detachable from a side of a cooking vessel that is heated based on a magnetic field generated from an induction cooktop includes: a magnetic harvester circuit configured to generate electric energy based on the magnetic field generated from the induction cooktop based on the electronic device being attached to the side of the cooking vessel; a temperature sensor configured to be driven based on the electric energy and configured to detect a temperature; and a communication circuit configured to transmit the temperature to the induction cooktop.

The present disclosure relates to a loaded-object sensor and an induction heating device including the loaded-object sensor. The loaded-object sensor has a cylindrical hollow body with a sensing coil wound on its outer surface. Further, a receiving space formed inside the body of the loaded-object sensor accommodates a temperature sensor. The loaded-object sensor is concentrically provided in a central region of the working coil. The sensor may measure the temperature of the loaded object while discriminating a type of the loaded object placed on a corresponding position to the working coil.

A circuit comprises an optical coupling including an illuminator optically coupled to an optical sensor to output a voltage from the optical sensor based on intensity of illumination from the illuminator. The circuit includes a voltage input node with a resistance connected in series between the voltage input and a Zener diode. A method includes powering an illuminator with current from a first voltage input node. The method includes sensing illumination level in illumination from the illuminator with a sensor and outputting output proportionate to illumination sensed by the sensor indicative of voltage detected at the voltage input node. The method can include limiting current between the voltage input node and the illuminator.

A cooling device includes a cooling unit configured to be driven by electric power and to receive heat, a power supply unit configured to supply the electric power to the cooling unit, and a housing that accommodates the cooling unit and is attachable to a cooking container and removable from the cooking container.

In the interests of improved temperature detection and temperature control of a cooking appliance on a hob by means of an induction coil, the cooking appliance has specific and individual identification. This can be contained in an NFC tag, by way of identification means. This identification can be read out on a hob, either by means of the hob itself or by means of a mobile telephone, and transferred to a database in an Internet cloud storage facility. From the latter, specific characteristics for this cooking appliance can be downloaded and employed for a temperature-controlled heating of the cooking appliance.

An output control device includes an output component, a first switch and a second switch. The output component includes a first output coil used for controlling, when the first circuit is turned on and the second circuit is not turned on, the first output coil to enter a heating working state, and controlling, when the first circuit is not turned on and the second circuit is turned on, the first output coil to enter a power transmission working state. The first switch is located in the first circuit and used for turning on the first circuit when being closed. The second switch is located in the second circuit and used for turning on the second circuit when being closed.

A cooking utensil includes a drive unit which is configured to drive at least one consumer, and a receiving unit which is configured to receive energy in a contactless manner and to supply energy to the drive unit. The cooking utensil can be part of a cooking system which further includes a cooktop apparatus having an induction unit configured at least to supply energy for the receiving unit of the cooking utensil.

A wireless power transfer system includes an induction heating cooking apparatus including a heating coil that produces a high-frequency magnetic field, a power reception device including a power reception coil that receives power from the heating coil, a first communication device provided on the power reception device to transmit a communication signal, a second communication device provided above the induction heating cooking apparatus to receive the communication signal from the first communication device, and a notification unit that indicates whether the power reception coil is located within a predetermined region that is set in advance with respect to the heating coil, when the second communication device receives the communication signal from the first communication device.

A method for sensing a container includes: charging an induction heating circuit; sensing a current applied to the induction heating circuit, converting a current value of the current into a first voltage value; comparing the first voltage value with a resonance reference value; generating a resonance of the current; sensing a resonant current generated in the induction heating circuit; converting the resonant current into a second voltage value; comparing the second voltage value with a count reference value; generating one or more output pulses; comparing a count of the one or more output pulses with a reference count, or comparing an on-duty time of the one or more output pulses with a reference time; and based on (i) the comparison of the count with the reference count or (ii) the comparison of the on-duty time with the reference time, determining whether an object is present on a working coil.