摘要:
A low noise, compact and low cost electric power converter employing a compact common mode transformer, and incorporating a line filter can reduce a leakage current, and can maintain predetermined leakage current reduction effect even if installation condition of the electric power converter or a characteristics of a semiconductor switching element is varied. The electric power converter including a capacitor, a first electrode, a second electrode, a first magnetic body, on which the first electrode and the second electrode are wound to form an LC composite element, connecting electrodes electrically connected to respective of both ends of the first and second electrodes, a second magnetic body for interlinking both ends of the first magnetic body, a coil wound around the second magnetic body in the same winding direction as the first and second electrodes wound around the first magnetic body and a resistor for shorting the output of the coil.
摘要:
A low noise, compact and low cost electric power converter employing a compact common mode transformer, and incorporating a line filter can reduce a leakage current, and can maintain predetermined leakage current reduction effect even if installation condition of the electric power converter or a characteristics of a semiconductor switching element is varied. The electric power converter including a capacitor, a first electrode, a second electrode, a first magnetic body, on which the first electrode and the second electrode are wound to form an LC composite element, connecting electrodes electrically connected to respective of both ends of the first and second electrodes, a second magnetic body for interlinking both ends of the first magnetic body, a coil wound around the second magnetic body in the same winding direction as the first and second electrodes wound around the first magnetic body and a resistor for shorting the output of the coil.
摘要:
A low noise, compact and low cost electric power converter employing a compact common mode transformer, and incorporating a line filter can reduce a leakage current, and can maintain predetermined leakage current reduction effect even if installation condition of the electric power converter or a characteristics of a semiconductor switching element is varied. The electric power converter including a capacitor, a first electrode, a second electrode, a first magnetic body, on which the first electrode and the second electrode are wound to form an LC composite element, connecting electrodes electrically connected to respective of both ends of the first and second electrodes, a second magnetic body for interlinking both ends of the first magnetic body, a coil wound around the second magnetic body in the same winding direction as the first and second electrodes wound around the first magnetic body and a resistor for shorting the output of the coil.
摘要:
An object of the present invention is to lower the voltage applied to the starting resistor of the starting circuit in a switching power supply circuit to reduce the power loss especially when the receiving voltage is high and thereby provide a small and inexpensive switching power supply circuit.According to the present invention, a switching power supply circuit comprises: a DC voltage section having two or more capacitors connected in series; and a PWM control circuit for receiving DC power supply from the DC voltage section and performing switching control on a primary side of a transformer in order for the switching power supply circuit to output a DC voltage of different voltage specifications; wherein the starting resistor for the PWM control circuit is connected to a connection point of the capacitors.
摘要:
An object of the present invention is to lower the voltage applied to the starting resistor of the starting circuit in a switching power supply circuit to reduce the power loss especially when the receiving voltage is high and thereby provide a small and inexpensive switching power supply circuit.According to the present invention, a switching power supply circuit comprises: a DC voltage section having two or more capacitors connected in series; and a PWM control circuit for receiving DC power supply from the DC voltage section and performing switching control on a primary side of a transformer in order for the switching power supply circuit to output a DC voltage of different voltage specifications; wherein the starting resistor for the PWM control circuit is connected to a connection point of the capacitors.
摘要:
In an information reproducing apparatus, a sound generator generates an indication audio signal corresponding to an external operation state and a performance state to produce it externally without conversion or with conversion into sound. As a result, a wide variety of sounds or voice sounds acting as a warning sound against an erroneous operation and a caution sound telling performance termination are produced and hence an information of warning or caution concerning the operation can be supplied to an user and further can be used as an effective sound.
摘要:
A filtering material for effectively adsorbing not only conventional foreign material such as dust, odoring gaseous substance but also very fine foreign material such as virus, bacteria, fungus, pollen or the like is disclosed. The filtering material includes as essential components porous apatite particles, a water soluble glucan and a sheet-shaped raw material in which the porous apatite particles are included with the aid of the water soluble glucan serving as a binder. A method of producing a filtering material of the foregoing kind is practiced by way of a step of preparing an aqueous treatment solution in which porous apatite particles of 0.5 to 40% by weight and a water soluble glucan of 0.5 to 15% by weight are dispersively dissolved, a step of immersing a sheet-shaped raw material in the aqueous treatment solution, and a step of drying the sheet-shaped raw material while the porous apatite particles are included in the sheet-shaped raw material with the aid of the water soluble glucan serving as a binder. Alternatively, a step of spraying the aqueous treatment solution to surfaces of a sheet-shaped raw material may be substituted for the step of immersing a sheet-shaped raw material in the aqueous treatment solution. It is preferable from the viewpoint of practice use that the porous apatite particles make up between 0.5 and 30% of the treatment solution.
摘要:
An applicator cap is closed on the front side and opening on the rear side, covering an applying part provided in the front end of a barrel cylinder of an applicator, from the rear-side opening, and detachably fitted on the barrel cylinder so as to be able to seal and keep the surrounding space of the applying part airtight, and includes a holding portion formed such that the middle part of the cap with respect to the axial direction is smaller in outside diameter than the front end with respect to the axial direction.
摘要:
In this grease composition, a grease produced by mixing at least one base oil selected from a mineral oil-type lubricant base oil, a synthetic lubricant base oil, and a biodegradable lubricant base oil with a thickener is compounded with a wax and water, and an additive such as a surfactant and a defoamer is optionally compounded therewith. A soap containing a calcium sulfonate complex is used as the thickener. A carnauba wax is preferably used as the wax. Since this grease composition is mainly composed of a grease and a wax, the grease composition extremely facilities its removal operation after application, is environmentally friendly, and has extremely excellent anti-corrosion performance. When the grease composition is used by being applied to a base material of an object to be welded, an effect of preventing the adhesion of welding spatters can be obtained.
摘要:
An applicator cap is closed on the front side and opening on the rear side, covering an applying part provided in the front end of a barrel cylinder of an applicator, from the rear-side opening, and detachably fitted on the barrel cylinder so as to be able to seal and keep the surrounding space of the applying part airtight, and includes a holding portion formed such that the middle part of the cap with respect to the axial direction is smaller in outside diameter than the front end with respect to the axial direction.