Abstract: A rectifier circuit (3) and a switching circuit (6) are mounted on a board (30). The board (30) is contained in a case (10) along with one or more capacitors (4, 5). In particular, the capacitors (4, 5) are laid sideways in the case (10).

Abstract: A heating cooker includes a cooking chamber having a heater for heating food, a gas sensor for detecting the quantity of vapor evaporating from the food heated in the cooking chamber, a temperature sensor for detecting a temperature in the cooking chamber, and a controller for determined the kind of the food according to the quantity of vapor detected by the gas sensor, and for controlling the heating temperature and heating time of the heater according to the kind of food which has been determined.

Abstract: A humidity sensor and a method for producing the same, in which an insulating film is first formed on a substrate. A first sensing film is formed on a first electrode to be separated by a space from the insulating film. A second sensing film of the same material as the first sensing film is again formed on the first sensing film and the insulating film, the space therebetween being filled with the second sensing film. Thus a uniform surface etching of the second sensing film is effected, to obtain a continuous flat film layer composed of the sensing film and the insulating film with a continuous flat surface, and in which a second electrode is formed on at least the sensing film.

Abstract: A compressor has a motor and a compressor mechanism connected to the motor. The motor has a coil and is lubricated with lubricant. The compressor mechanism sucks and compresses low-pressure coolant and discharges high-pressure coolant. The compressor comprises a unit for preheating the lubricant, and a unit for detecting line-to-line impedance of the coil of the motor to know the quantity of a mixture of liquified coolant and the lubricant, and controlling activation of the preheating unit and of the compressor according to a result of the detection.

Abstract: A capacitance type sensitive element comprises a pair of electrode pairs formed on an insulating substrate and having opposite electrode faces perpendicular or slantingly formed with respect to a face of the insulating substrate; and a sensing material disposed between the opposite electrode faces of the electrodes and having electrical characteristics changed on the basis of the physical or chemical interaction between the sensing material and a substance to be detected.