Abstract: A noise suppression circuit board design to provide a power supply to an inductive heating element is disclosed. The noise suppression circuit provides a configuration for a multi-layer circuit board that has radiation noise emissions below the CISPR 11 (limits and methods of measurements of radio disturbance characteristics of industrial, scientific and medical (ISM) radio-frequency equipment) thresholds in the 30 MHz to 1 GHz frequency range.

Abstract: An induction heating cooker is provided. The induction heating cooker may include a rectifier to rectify an input voltage into a direct current (DC) voltage and output the DC voltage, an inverter to generate an alternating current (AC) voltage by switching the DC voltage, a first heater driven by the AC voltage so as to heat a first cooking container, a second heater connected in parallel to the first heater, and driven by the AC voltage so as to heat a second cooking container, and a switching controller configured to output a switching signal to the inverter for controlling the first and second heaters in accordance with a selected operation mode. The selected operation mode may be a first operation mode for driving only the first heater, a second operation mode for driving only the second heater, or a third operation mode for driving both the first and second heaters at the same time.

Abstract: According to one embodiment, a microwave annealing apparatus is provided, including a housing shielding electromagnetic waves, a first electromagnetic wave source configured to apply a first electromagnetic wave into the housing, a second electromagnetic wave source configured to apply, into the housing, a second electromagnetic wave having a higher frequency than the first electromagnetic wave, a susceptor configured to hold a semiconductor substrate, made of a material transparent to the first electromagnetic wave and provided in the housing, a temperature measuring device configured to measure the temperature of the semiconductor substrate, and a control unit configured to control the power of each of the first and second electromagnetic wave sources in accordance with the temperature measured by the temperature measuring device.

Abstract: An induction heating cooker having an oil temperature control function by of the amount of change of an operating frequency, and a control method thereof, the induction heating cooker including a heating coil, an inverter unit, a driving unit, a detection unit to detect a value of a current that flows at the heating coil, and a control unit to calculate an operating frequency of the driving unit according to the value of the current, to vary the operating frequency so that the heating coil maintains a constant output that corresponds to an output level, and to determine whether oil accommodated in a container placed on the heating coil is overheated, by use of an amount of change of the operating frequency, and the maintenance or the control of the temperature of oil may be achieved.

Abstract: Devices and methods that use returned power (RP) measurements during microwave energy delivery to perform one or more functions. For example, such microwave devices and systems can include one or more features to measure the returned microwave power. One or more measurements of the returned microwave power may be used to obtain information about one or more of: antenna shape, system status and system performance. One or more measurements of the returned microwave power shaping elements may also be used to obtain information about one or more properties of the target material. Devices and methods for delivering microwave energy to a variety of target materials to achieve a variety of desired microwave effects.

Abstract: Microwave pressure cooker including safety interlock mechanism. A blow vent is provided in cooker lid, and a lock bar is pivoted to cooker lid in a position to block blow vent when lock bar is resting under its own weight. Free end of lock bar includes a lock tab. Lock tab extends through a slot at periphery of lid. Cooker base includes handle with a cam section ending in a lock wall. Cooker lid is placed on base in a release position and rotated to a locking position. During rotation lock tab rides over cam section and then falls adjacent lock wall, thus sealing blow vent. After cooking cover is physically prevented from rotating back to release position by lock tab abutting lock wall. User must physically lift lock bar to unseal blow vent to ensure internal pressure is released. A spline may hold lock bar in raised position.

Abstract: Apparatuses and methods are disclosed for applying electromagnetic energy in a radio frequency (RF) range to an object in an energy application zone via at least one radiating element. At least one processor may be configured to determine locations of a first region and a second region in the energy application zone. In addition, the processor may be configured to regulate a source in order to apply a first predetermined amount of RF energy to the first region in the energy application zone and a second predetermined amount of RF energy to the second region in the energy application zone. The first predetermined amount of energy may be different from the second predetermined amount of energy.

Abstract: The present invention discloses a new tool to slice crystal ingots by using laser beams. Ingot crystals of III-nitride such as GaN are immersed in alkali solutions and irradiated with scanned lines of laser beams to slice wafers out of the ingots. The method is expected to achieve approximately one order of magnitude smaller slicing loss with minimized slicing damage.

Abstract: An induction heating device includes: a resonant circuit provided with a coil heating a workpiece inductively and a capacitor, the coil and the capacitor being coupled in parallel with each other; a switching element coupled in series with the resonant circuit; a power supply which applies to the resonant circuit, a direct-current input voltage whose instantaneous value can be changed with the lapse of time; and a power controller which controls power to the workpiece by turning the switching element ON at a certain time and changing an ON period of the switching element, and the power controller is characterized by turning the switching element ON with a delay of an integral multiple of a resonant period of the resonant circuit if a value of power to the workpiece is equal to or lower than a first threshold which is predetermined.

Abstract: A container includes a sleeve, a first end closure, and a second end closure. The first end closure closes off a first end of the sleeve and the second end closes off an opposite second end of the sleeve. The sleeve and end closures cooperate to define an interior region therebetween that receives products therein.

Abstract: A cooking apparatus including a cooking chamber to receive materials to be cooked therein, a microwave-heating unit to radiate microwaves to the cooking chamber, a convection-heating unit to supply hot air to the cooking chamber, a grill-heating unit to supply radiant heat to the cooking chamber, a crusty plate configured to be heated by the microwaves, an input unit to receive a user fry-cooking command, and a control unit. When the user fry-cooking command is input, the control unit performs a microwave-heating stage of activating at least one of the convection-heating unit and the grill-heating unit and activating the microwave-heating unit, and performs a slim fry stage of activating the grill-heating unit and the convection-heating unit without activating the microwave-heating unit. Accordingly, the cooking apparatus achieves the fry-cooking process using the microwaves, radiant heat and convection heat without dipping the materials to be cooked in oil.

Abstract: A modular RF power system allows multiple power supplies to combine their RF output power as a single system and deliver it to a common resonant circuit. For flexibility and commonality, each power supply is designed to be separately powered by AC line voltage (aka AC Mains). The AC voltage supplied to each power supply may differ due to differing AC distribution line length, line impedance, wire gauge, or different supply generation locations.

Abstract: A conventional induction heating cooker which operates two inverters at the same time, with only one input current detecting circuit provided, cannot measure each of input currents to each of the plurality of inverters, and cannot control input powers by feedback control on input currents. In the induction heating cooker which has a plurality of inverters, when the input power varies to the inverter which has less input power supplied, the variation hardly influences the cooking. The induction heating cooker according to the present invention fixes the operating frequency for the inverter which has less input power supplied and performs the feedback control of the input current for the inverter which has bigger input power supplied.

Abstract: The present disclosure relates to an apparatus for processing objects with RF energy. The apparatus may include a display for displaying to a user an image of an object to be processed, the image including at least a first portion and a second portion of the object. The apparatus may also include an input unit and at least one processor configured to: receive information based on input provided to the input unit; and generate, based on the received information, processing information for use in processing the object to achieve a first processing result in the first portion of the object and a second processing result in the second portion of the object.

Abstract: Systems, Apparatuses and methods are disclosed for cooking a food item using RF oven. The food item may include a tag containing information regarding food items associated with the food item. The RF oven may include an interface to receive the information. The RF oven may also include a processor to determine an amount of energy to be delivered to the food item based on the information. The processor may be configured to cause a RF power source to supply RF energy to cook the food item based on the determined amount of energy.

Abstract: A polymer-coated oven board includes a coating that contains an oxygen barrier layer of polyamide (PA) and a surface layer of polyethylene terephthalate (PET) adhered to the oxygen barrier layer. These layers are produced onto the board by co-extrusion without a binding agent layer between them. The weight of the PA oxygen barrier layer is 3-15 g/m2, and the weight of the PET surface layer is 20-50 g/m2. An oxygen impermeable food package heatable in an oven includes the oven board wherein the superimposed polyamide and PET layers are located inside the board layer in the package. The oven board may also include a PET surface layer on the opposite side of the board. Polyamide has been selected so that it withstands heat sealing and the heating of the package in an oven.

Abstract: A microwave appliance is provided. The microwave appliance includes a cabinet and a duct mounted to the cabinet. A filter is mounted to the duct at an opening of the duct. The filter has projections that are received within channels of the duct. The projections and channels can assist with properly positioning and/or orienting the filter within the duct.

Abstract: A microwave heater equipped with a microwave choke and suitable for heating one or more articles under vacuum. The microwave choke inhibits leakage of microwave energy between a door of the heater and a main vessel body of the heater without causing arcing at the choke, even at low pressures. In certain situations, the microwave choke can be configured with side-by-side choke cavities. In certain situations, the microwave choke can be removably coupled to the door and/or vessel body for easier fabrication, installation, and/or replacement.

Abstract: A method of heating and/or thawing using an RF heater is described. In some cases the heating differentially heats portions according to their dissipation ratios. Optionally, this avoids dissipating large amounts of energy into thawed portions while frozen portions are still extant and heat slowly. Optionally, this prevents overheating of thawed potions.

Abstract: A system and method for powering a dual magnetron with a dual power supply is disclosed. A first power supply supplies a first voltage to a first magnetron. A second power supply supplies a second voltage to a second magnetron. A balancer circuit controls a drive current for altering a magnetic field of the first magnetron and a magnetic field of the second magnetron to maintain the first voltage and the second voltage at a substantially equal voltage.