Abstract: A switching power supply device of the present disclosure includes a device connection state detection circuit that detects a connection state in a load device connection terminal, in a power supply system having the load device connection terminal. The device connection state detection circuit includes a transformer, a switching element, a pulse generator, and a waveform detection circuit. The waveform detection circuit detects a voltage or a current generated at a connecting point between a primary winding wire of the transformer and the switching element in response to operation of a pulse signal. The waveform detection circuit compares the voltage or the current with a predetermined reference value, and outputs an output signal in response to a comparison result to an OFF terminal.

Abstract: A weather predicting method includes: selecting, from weather information related to areas and times and including temperature data, weather information sets related to multiple times over a fixed period concerning a first area containing a location where the air utilizing apparatus is placed; by solving, with selected weather information sets as input data, differential equations expressing the weather information based on analysis models for conducting weather simulations, generating a first narrow area weather information sets related to smaller second areas disposed within the first area; selecting a second narrow-area weather information set concerning a second area containing the location of the air utilizing apparatus from among generated first narrow-area weather information sets; and generating a temperature cumulative frequency distribution or a temperature exceedance probability distribution during the fixed period by using temperature data contained in the second narrow-area weather information se

Abstract: A switching power supply device of the present disclosure includes a device connection state detection circuit that detects a connection state in a load device connection terminal, in a power supply system having the load device connection terminal. The device connection state detection circuit includes a transformer, a switching element, a pulse generator, and a waveform detection circuit. The waveform detection circuit detects a voltage or a current generated at a connecting point between a primary winding wire of the transformer and the switching element in response to operation of a pulse signal. The waveform detection circuit compares the voltage or the current with a predetermined reference value, and outputs an output signal in response to a comparison result to an OFF terminal.

Abstract: A switching power supply apparatus of the present disclosure is a device connection state detection circuit that detects a connection state in a load device connection terminal in a power supply system having the load device connection terminal. The device connection state detection circuit includes a transformer, a switching element, a pulse generator, and a waveform detection circuit. The waveform detection circuit detects a voltage or a current generated in a primary winding wire or a secondary winding wire of the transformer in accordance with operation of a pulse signal, compares the detected voltage or current with a preset reference value, and outputs an output signal in accordance with a comparison result, to an OFF terminal.

Abstract: A converter includes: a bridge diode; an X capacitor provided upstream of the bridge diode; a smoothing capacitor provided downstream of the bridge diode; an AC shutoff detection circuit which outputs an AC shutoff detection signal when input AC voltage is shut off; and a discharging circuit which is connected to a connection point at which the cathode of the bridge diode and the smoothing capacitor are connected, and allows residual charges in the smoothing capacitor and the X capacitor to be discharged when the AC shutoff detection signal is output, and the discharging circuit includes a JFET which has a drain terminal connected to the above connection point and lowers discharge voltage; and a first discharging switch element connected to the source terminal of the JFET.

Abstract: A switching power supply apparatus of the present disclosure is a device connection state detection circuit that detects a connection state in a load device connection terminal in a power supply system having the load device connection terminal. The device connection state detection circuit includes a transformer, a switching element, a pulse generator, and a waveform detection circuit. The waveform detection circuit detects a voltage or a current generated in a primary winding wire or a secondary winding wire of the transformer in accordance with operation of a pulse signal, compares the detected voltage or current with a preset reference value, and outputs an output signal in accordance with a comparison result, to an OFF terminal.

Abstract: A weather predicting method is provided and includes: selecting, from weather information including temperature data and related to times and areas, a weather information related to an area containing a location where an air utilizing apparatus is placed and related to multiple times over a certain period; by solving, with weather information as input data, differential equations expressing weather information based on weather analysis models used for conducting weather simulations, generating first narrow-area weather information related to areas smaller than the area corresponding to the weather information; selecting a second narrow-area weather information concerning an area containing the location of the air utilizing apparatus from among the first narrow-area weather information; and generating a temperature cumulative distribution or a temperature exceedance probability distribution over a certain period by using temperature data contained in the second narrow-area weather information for calculating a

Abstract: A weather predicting method includes: selecting, from weather information related to areas and times and including temperature data, a weather information sets related to multiple times over a fixed period concerning a first area containing a location where the air utilizing apparatus is placed; by solving, with selected weather information sets as input data, differential equations expressing the weather information based on analysis models for conducting weather simulations, generating a first narrow-area weather information sets related to smaller second areas disposed within the first area; selecting a second narrow-area weather information set concerning a second area containing the location of the air utilizing apparatus from among generated first narrow-area weather information sets; and generating a temperature cumulative frequency distribution or a temperature exceedance probability distribution during the fixed period by using temperature data contained in the second narrow-area weather information

Abstract: A laser welding apparatus includes a laser welding unit including a first lens adapted to focus a laser beam; a second lens adapted to diffuse the laser beam to the first lens; and a third lens adapted to guide the laser beam to the second lens. The relative positions of the first lens, the second lens, and the third lens, are adjusted to adjust a diffusion angle and a beam width of the laser beam entering the first lens. The laser welding apparatus performs: actuating the laser welding unit to travel at a predetermined speed along a predetermined trajectory; directing the laser beam at a first welding spot; adjusting the focal length to focus the laser beam at the first welding spot; holding the laser focal spot size substantially constant; and directing the laser beam at a second welding spot after completion of welding for the first welding spot.

Abstract: A converter includes: a bridge diode; an X capacitor provided upstream of the bridge diode; a smoothing capacitor provided downstream of the bridge diode; an AC shutoff detection circuit which outputs an AC shutoff detection signal when input AC voltage is shut off; and a discharging circuit which is connected to a connection point at which the cathode of the bridge diode and the smoothing capacitor are connected, and allows residual charges in the smoothing capacitor and the X capacitor to be discharged when the AC shutoff detection signal is output, and the discharging circuit includes a JFET which has a drain terminal connected to the above connection point and lowers discharge voltage; and a first discharging switch element connected to the source terminal of the JFET.

Abstract: Provided is a pedal force sensor which, in pedal force detection utilizing an elastic body, can detect pedal force over a wide range and reduce detection errors originating from variation in the attachment position or length etc. of the elastic body. Linkage between a drive wheel (30) that is fixed to a crankshaft (14) and a sprocket (50) that transmits rotary force of the crankshaft (14) to a propelling vehicle wheel is effected by a plurality of springs (80 to 90), and furthermore the space between each spring (80 to 90) and compression means thereof is set in such a way that the compression commencement timings of the plurality of springs (80 to 90) are offset. When detecting pedal force from the phase difference of the drive wheel (30) and the sprocket (50), the number of springs that are utilized changes in accordance with the range of the phase difference.

Abstract: In one aspect, an impedance component which exhibits a high impedance in a high frequency region is arranged on a high pressure line formed on a secondary side of a transformer. The potential difference generated at both ends of the impedance component is used to detect an abnormal electrical discharge generated in the high pressure line. When the abnormal electrical discharge is detected, a switching operation is stopped by a controlling circuit whereby a protection operation is performed.

Abstract: A disk access system switching device is interposed between a first driver accessing an OS boot disk by use of a first disk access system, a second driver accessing by use of a second disk access system capable of accessing the disk faster than by the first disk access system, and a high-order driver issuing disk access commands to the first and second drivers, wherein the disk access command received from the high-order driver with respect to the boot disk directed to the first driver is transferred to the first driver before an end of initializing the second driver, and the disk access command received from the high-order driver with respect to the boot disk directed to the first driver is transferred to the second driver when detecting the end of initialization of the second driver.

Abstract: In one aspect, an impedance component which exhibits a high impedance in a high frequency region is arranged on a high pressure line formed on a secondary side of a transformer. The potential difference generated at both ends of the impedance component is used to detect an abnormal electrical discharge generated in the high pressure line. When the abnormal electrical discharge is detected, a switching operation is stopped by a controlling circuit whereby a protection operation is performed.

Abstract: In one aspect, an impedance component which exhibits a high impedance in a high frequency region is arranged on a high pressure line formed on a secondary side of a transformer. The potential difference generated at both ends of the impedance component is used to detect an abnormal electrical discharge generated in the high pressure line. When the abnormal electrical discharge is detected, a switching operation is stopped by a controlling circuit, whereby a protection operation is performed.

Abstract: A laser welding apparatus includes a laser welding unit including a first lens adapted to focus a laser beam; a second lens adapted to diffuse the laser beam to the first lens; and a third lens adapted to guide the laser beam to the second lens. The relative positions of the first lens, the second lens, and the third lens, are adjusted to adjust a diffusion angle and a beam width of the laser beam entering the first lens. The laser welding apparatus performs: actuating the laser welding unit to travel at a predetermined speed along a predetermined trajectory; directing the laser beam at a first welding spot; adjusting the focal length to focus the laser beam at the first welding spot; holding the laser focal spot size substantially constant; and directing the laser beam at a second welding spot after completion of welding for the first welding spot.

Abstract: In one aspect, an impedance component which exhibits a high impedance in a high frequency region is arranged on a high pressure line formed on a secondary side of a transformer. The potential difference generated at both ends of the impedance component is used to detect an abnormal electrical discharge generated in the high pressure line. When the abnormal electrical discharge is detected, a switching operation is stopped by a controlling circuit, whereby a protection operation is performed.

Abstract: To provide a digital amplifier and a switching power supply which are effective to realize a noise level required for a high grade and output digital amplifier and a switching power supply. In an embodiment, a noise component extraction circuit is coupled to the output stage of a D-class driver. The noise component extraction circuit extracts a noise component included in the output of the D-class driver and adjusts the phase and gain of the extracted noise component. After its phase and gain have been adjusted, the extracted noise component is added to the output of a low-pass filter. As a result, the noise component remaining in an audio signal that has passed through the low-pass filter is canceled.

Abstract: An agent for treating metal ions in an aqueous solution, comprising a solid porous carrier and, supported thereon, an organic reagent (hereinafter referred to as a "redox reagent") which is capable of converting metal ions (inclusive of metal complex ions) contained in an aqueous solution to zero valent metal or monovalent metal ions by a redox reaction and which is capable of carrying out oxidation-reduction reversibly.