Abstract: A wire sheath stripping machine having at least one cutter for cutting an outer circumference of a wire, a cutter rotating means for rotating the cutter in a circumferential direction of the wire, a cutter driving means for advancing and retracting the cutter in a radial direction of the wire, and at least one wire support arranged at a position facing the cutter across the wire to receive the outer circumference of the wire.

Abstract: A wire sheath stripping machine having at least one cutter for cutting an outer circumference of a wire, a cutter rotating means for rotating the cutter in a circumferential direction of the wire, a cutter driving means for advancing and retracting the cutter in a radial direction of the wire, and at least one wire support arranged at a position facing the cutter across the wire to receive the outer circumference of the wire.

Abstract: An off-period adjustment circuit 17 changes an off period of the switching element 2 after a maximum on period according to duration of a period from when the switching element 2 is turned on to when a current flowing through the switching element 2 reaches an overcurrent detection level. With this configuration, an oscillation frequency of the switching element 2 is changed so that a switching power supply can provide output energy independently of change in input voltage. Consequently provided is a less costly switching power supply apparatus and a semiconductor device used for the switching power supply apparatus, with which currents to loads are made uniform among regulation devices without providing different circuit constants according to a range of input voltages.

Abstract: The LED driving semiconductor apparatus for driving at least one LED includes an input terminal, an output terminal, a switching element block and a controller. The input terminal is connected to a high voltage side of a rectifying circuit for rectifying an alternating current voltage, and inputs the voltage from the rectifying circuit. The output terminal is provided for supplying a current to the LED. The switching element block is connected between the input terminal and the output terminal, and has a first switching element. The controller includes a regulator for generating a power source voltage for driving and controlling the switching element block, and a drain current detector for detecting a drain current of the switching element block, and performs on/off control of the first switching element to block the drain current of the switching element block when the drain current reaches a predetermined threshold.

Abstract: An electric rotary machine, an armature for use in the electric machine, a method of forming an electric rotary machine and a forming machine for an armature of an electric rotary machine are disclosed wherein insulator-coated coils are wound in slots of an armature core from which lower and upper layer coil extensions extend and are connected to a commutator. The upper layer coil extension has a contour deformation part at an intersecting region where the lower and upper layer coil extensions intersect with each other to have an insulating distance between the lower and upper layer coil extensions. The forming machine includes a work holder holding the armature, and a forming jig forming a curvature portion on the upper layer coil extension.

Abstract: In the present invention, according to a time from when a switching element 2 is turned on to when the switching element 2 reaches a set overcurrent detection level, an on time correction circuit 15 changes a time from when the switching element 2 reaches the overcurrent detection level to when the switching element 2 is turned off. Thus it is possible to keep constant the peak value of drain current passing through the switching element 2, regardless of an input voltage Vin.

Abstract: There is provided a light emitting diode drive apparatus which decreases a conducted emission. The light emitting diode drive apparatus includes a light emitting diode to which a voltage is applied from a voltage source, a choke coil connected in series to the light emitting diode, a rectifier diode connected in parallel to the light emitting diode and the choke coil to supply a back electromotive force generated in the choke coil to the light emitting diode, and a switching drive circuit including a switching element and a control circuit block. The switching element determines whether a current is applied or not applied to the light emitting diode. The control circuit block controls on/off timing of the switching element to control the current flowing into the light emitting diode. The choke coil is connected between the light emitting diode and the switching element.

Abstract: A reference supply voltage circuit includes a detecting device for detecting a first reference voltage, a comparator, and a preventing circuit for preventing any false operation during pre-operation indefinite time interval. The comparator outputs a signal which controls an operation circuit whose supply voltage is a second reference voltage equal to or lower than the first reference voltage. The preventing circuit maintains the second reference voltage to a circuit reference potential when the first reference voltage is lower than a first predetermined voltage, sets the second reference voltage to a voltage equal to the first reference voltage when the first reference voltage is equal to or higher than the first predetermined voltage and lower than a second predetermined voltage, and sets the second reference voltage to a voltage proportional to the first reference voltage when the first reference voltage is equal to or higher than the second predetermined voltage.

Abstract: A technology capable of preventing or suppressing a display defect in a PDP (detrimental effect due to local contamination of the display area caused by admixture of impurity gas at the time of introducing discharge gas) is provided. In a PDP, first barrier ribs and first phosphors formed between the first barrier ribs are provided so as to correspond to a display area. In a non-display area outside the display area, an air hole for evacuation from a discharge space and gas filling into the discharge space is provided in a part of an outer perimeter of the panel. Further, an area in which second phosphors having a property of absorbing impurity gas are formed is formed at a position between the display area and the air hole in a part of the non-display area, in particular, in a part of a dummy rib area.

Abstract: A switching control circuit is provided which can increase the off period of a switching element when the on period of the switching element is equal to the sum of the minimum pulse period (blanking period (a fixed period during which drain current is not detected after the switching element is turned on)) and a detection delay period (a period from when the drain current is equal to or higher than a detection criterion to when the switching element is actually turned off) and PWM control is disabled. An off period adjusting circuit generates, when the on period of the switching element is equal to the minimum pulse period, an adjusting signal OFF_C for increasing the off period of the switching element and supplies the signal to an on/off circuit for controlling the periodic on/off operation of the switching element.

Abstract: The peak current flowing to the switching device drops in a no-load state with PWM control, but because the number of switching operations is constant regardless of the load, further reducing power consumption is difficult. The switching power supply device has a PWM signal generator for generating a PWM signal, a switching device Q1 for switching the first supply voltage VIN based on the PWM signal, converters for outputting the difference between a second supply voltage and a reference voltage as a difference signal, and an intermittent oscillation control circuit for stopping the switching operation of the first switching device when the difference signal is less than a predetermined first threshold value (Vp1). The PWM signal generator changes the pulse width based on the difference signal to generate the PWM signal.

Abstract: A reference supply voltage circuit includes a detecting device for detecting a first reference voltage, a comparator, and a preventing circuit for preventing any false operation during pre-operation indefinite time interval. The comparator outputs a signal which controls an operation circuit whose supply voltage is a second reference voltage equal to or lower than the first reference voltage. The preventing circuit maintains the second reference voltage to a circuit reference potential when the first reference voltage is lower than a first predetermined voltage, sets the second reference voltage to a voltage equal to the first reference voltage when the first reference voltage is equal to or higher than the first predetermined voltage and lower than a second predetermined voltage, and sets the second reference voltage to a voltage proportional to the first reference voltage when the first reference voltage is equal to or higher than the second predetermined voltage.

Abstract: A switching control circuit is provided which can increase the off period of a switching element when the on period of the switching element is equal to the sum of the minimum pulse period (blanking period (a fixed period during which drain current is not detected after the switching element is turned on)) and a detection delay period (a period from when the drain current is equal to or higher than a detection criterion to when the switching element is actually turned off) and PWM control is disabled. An off period adjusting circuit generates, when the on period of the switching element is equal to the minimum pulse period, an adjusting signal OFF_C for increasing the off period of the switching element and supplies the signal to an on/off circuit for controlling the periodic on/off operation of the switching element.

Abstract: There is provided a light emitting diode drive apparatus which decreases a conducted emission. The light emitting diode drive apparatus includes a light emitting diode to which a voltage is applied from a voltage source, a choke coil connected in series to the light emitting diode, a rectifier diode connected in parallel to the light emitting diode and the choke coil to supply a back electromotive force generated in the choke coil to the light emitting diode, and a switching drive circuit including a switching element and a control circuit block. The switching element determines whether a current is applied or not applied to the light emitting diode. The control circuit block controls on/off timing of the switching element to control the current flowing into the light emitting diode. The choke coil is connected between the light emitting diode and the switching element.

Abstract: An electric rotary machine, an armature for use in the electric machine, a method of forming an electric rotary machine and a forming machine for an armature of an electric rotary machine are disclosed wherein insulator-coated coils are wound in slots of an armature core from which lower and upper layer coil extensions extend and are connected to a commutator. The upper layer coil extension has a contour deformation part at an intersecting region where the lower and upper layer coil extensions intersect with each other to have an insulating distance between the lower and upper layer coil extensions. The forming machine includes a work holder holding the armature, and a forming jig forming a curvature portion on the upper layer coil extension.

Abstract: The peak current flowing to the switching device drops in a no-load state with PWM control, but because the number of switching operations is constant regardless of the load, further reducing power consumption is difficult. The switching power supply device has a PWM signal generator for generating a PWM signal, a switching device Q1 for switching the first supply voltage VIN based on the PWM signal, converters for outputting the difference between a second supply voltage and a reference voltage as a difference signal, and an intermittent oscillation control circuit for stopping the switching operation of the first switching device when the difference signal is less than a predetermined first threshold value (Vp1). The PWM signal generator changes the pulse width based on the difference signal to generate the PWM signal.

Abstract: The semiconductor device of this invention includes a first die pad down-set away from boundary portions between inner lead portions and outer lead portions; a first semiconductor chip mounted on the first die pad; a chip-shaped electronic component with a small thickness mounted on a second die pad formed by increasing the width of at least one of the inner lead portions; metal wires; leads each having an inner lead portion and an outer lead portion; and an encapsulation resin part for encapsulating the die pads, the semiconductor chip, the chip-shaped electronic component, the inner lead portions and the metal wires.

Abstract: The bonding method for a vent pipe of a display panel includes the step of preparing the bonding member on the periphery of the flange portion of the vent pipe, the step of interposing a buffer member made of a low-melting point glass flit having a softening temperature higher than that of the bonding member between a contact face to the display panel of the flange portion of the vent pipe and the display panel, and, in a state in which the flange portion of the vent pipe is pressed onto the display panel face by a pressing member so that the vent pipe is fixed, the step of heating the bonding member and the buffer member to a temperature to be softened so that the flange portion of the vent pipe is bonded to the display panel through the fused bonding member.

Abstract: In accordance with the present invention, there is provided a method of manufacturing a plasma display panel of the type which includes a discharge space defined between a pair of substrates and sealed by a sealant, the method comprising a first step of forming the sealant on at least one of the substrates and stacking one substrate on the other through the intermediation of the sealant, a second step of reducing the pressure in the space existing between the pair of substrates due to the presence of the sealant and melting the sealant by heating, a third step of curing the sealant to thereby firmly attach the pair of substrates to each other and define a predetermined discharge space, a fourth step of removing impurities in the discharge space, and a fifth step of filling the discharge space with discharge gas.

Abstract: The semiconductor device of this invention includes a first die pad down-set away from boundary portions between inner lead portions and outer lead portions; a first semiconductor chip mounted on the first die pad; a chip-shaped electronic component with a small thickness mounted on a second die pad formed by increasing the width of at least one of the inner lead portions; metal wires; leads each having an inner lead portion and an outer lead portion; and an encapsulation resin part for encapsulating the die pads, the semiconductor chip, the chip-shaped electronic component, the inner lead portions and the metal wires.