Abstract: A phase difference correction control unit determines, based on a difference between a voltage of a first input smoothing capacitor and a voltage of a second input smoothing capacitor, a difference between a current flowing through a first switching element and a current flowing through a second switching element, or a difference between a reactor current when a gate signal of the first switching element is turned on and a reactor current when a gate signal of the second switching element is turned on, an amount of correction of a difference between a phase of switching of the first switching element and a phase of switching of the second switching element. A switching control unit switches the first switching element and the second switching element based on the amount of correction.

Abstract: Provided are a wireless earphone charger, a wireless earphone, and a wireless earphone system that improve visibility and design of an indicator of the charger. The wireless earphone charger 3 is configured to charge a wireless earphone including a receiving circuit 141, 241 configured to receive a sound signal via a wireless communication line, and an earphone rechargeable battery 15, 25 configured to charge power to be supplied to the receiving circuit. The wireless earphone charger includes a rechargeable battery 35 configured to charge power to be supplied to the earphone rechargeable battery, an indicator 34A configured to indicate a plurality of indication modes, and a controller 39 configured to switch the indication modes. The indication modes of the indicator include a first indication mode for indicating a remaining power of the rechargeable battery, and a second indication mode for indicating a remaining power of the earphone rechargeable battery.

Abstract: Provided are a wireless earphone charger, a wireless earphone, and a wireless earphone system that improve visibility and design of an indicator of the charger. The wireless earphone charger 3 is configured to charge a wireless earphone including a receiving circuit 141, 241 configured to receive a sound signal via a wireless communication line, and an earphone rechargeable battery 15, 25 configured to charge power to be supplied to the receiving circuit. The wireless earphone charger includes a rechargeable battery 35 configured to charge power to be supplied to the earphone rechargeable battery, an indicator 34A configured to indicate a plurality of indication modes, and a controller 39 configured to switch the indication modes. The indication modes of the indicator include a first indication mode for indicating a remaining power of the rechargeable battery, and a second indication mode for indicating a remaining power of the earphone rechargeable battery.

Abstract: A manufacturing apparatus that manufactures flattened tube fins, in which cutaway portions for inserting flattened tubes for heat exchanging are formed, includes: a press apparatus provided with a mold apparatus that forms the cutaway portions in an unmachined metal thin plate to produce a metal strip; an inter-row slit apparatus cutting the metal strip into predetermined widths to form a plurality of metal strips of a product width; a cutoff apparatus cutting each metal strip of the product width into predetermined lengths; a holding apparatus that holds a plurality of metal strips of the product width that protrude from a downstream side in the conveying direction of the cutoff apparatus; and a stacker apparatus for stacking the flattened tube fins that have been cut into predetermined lengths by the cutoff apparatus.

Abstract: A stacking apparatus capable of stacking flattened tube fins efficiently is provided. There is provided a stacking apparatus for stacking flattened tube fins, each having a cutaway portion through which a heat exchanger flattened tube is inserted, formed from one side to the other side in a width direction, the stacking apparatus including a stack pin to be inserted into the cutaway portion, and the stack pin has a swing-preventing structure.

Abstract: A stacking apparatus capable of stacking flattened tube fins efficiently is provided. There is provided a stacking apparatus for stacking flattened tube fins, each having a cutaway portion through which a heat exchanger flattened tube is inserted, formed from one side to the other side in a width direction, the stacking apparatus including a stack pin to be inserted into the cutaway portion, and the stack pin has a swing-preventing structure.

Abstract: A method of cracking a heavy hydrocarbon oil containing a residual fraction with a boiling point of 538.degree. C. or higher, including contacting the heavy hydrocarbon oil with a fluidized bed of a particulate composite catalyst which includes an amorphous refractory inorganic oxide and a crystalline aluminosilicate dispersed in the oxide and which has a surface area distribution such that the surface area of pores having pore diameters in the range of from three times to six times the average molucular size of the residual fraction is at least 60% of the surface area of pores having pore diameters in the range of 15-150 .ANG..