摘要:
A dielectric barrier discharge lamp (14) has an inside electrode (142) in a tube axis direction within the airtight container (141), which has ultraviolet transmission properties and a long tube shape, and an outside electrode (143) having a semicircular shape arranged outside of the airtight container (141) in close contact with it. Besides, an excimer-forming gas is sealed in the airtight container (141). AC voltage supplied from the power source (11) is converted into DC voltage through a converter (12) and outputted. A high-frequency wave is generated by an inverter (13) based on the DC voltage supplied from the converter (12), and a dielectric barrier discharge is induced in the dielectric barrier discharge lamp (14) to irradiate ultraviolet rays. The converter (12) is configured by connecting in series the outputs of DC power sources (121), (122). Optimum luminous efficiency of a dielectric barrier discharge lamp having different specifications is also realized by adjusting the number of DC power sources.
摘要:
A dielectric barrier discharge lamp 14 has an inside electrode 142 in a tube axis direction within the airtight container 141, which has ultraviolet transmission properties and a long tube shape, and an outside electrode 143 having a semicircular shape arranged outside of the airtight container 141 in close contact with it. Besides, an excimer-forming gas is sealed in the airtight container 141. AC voltage supplied from the power source 11 is converted into DC voltage through a converter 12 and outputted. A high-frequency wave is generated by an inverter 13 based on the DC voltage supplied from the converter 12, and a dielectric barrier discharge is induced in the dielectric barrier discharge lamp 14 to irradiate ultraviolet rays. The converter 12 is configured by connecting in series the outputs of DC power sources 121, 122. Optimum luminous efficiency of a dielectric barrier discharge lamp having different specifications is also realized by adjusting the number of DC power sources.
摘要:
After an SiC film (4), an SiO2 film (5) and a silicon nitride film (6) are formed sequentially on an organic low dielectric constant film (3), by performing O2 plasma processing to a surface of the silicon nitride film (6), an oxide layer (7) is formed on the surface of the silicon nitride film (6). Then, a wiring trench pattern is formed on the silicon nitride film (6) and the oxide layer (7), and a resin layer (10) on which a via hole pattern is formed is formed. Subsequently, a portion of the oxide layer (7) exposed from the resin layer (10) is removed along with unnecessary particles.
摘要:
A rotor of a sensor-less motor has a multiplicity of magnetic poles, with one magnetic pole giving a smaller magnetic flux than other the magnetic poles. A coil is provided at a predetermined position external to the rotor. An induction signal is generated in the coil as the magnetic flux through it is changed by the rotation of the rotor. An index signal indicative of the reference rotational position of the rotor is generated based on the change in the induction signal. Thus, the reference rotational position of the disk of an information recording-reproducing unit, for example, can be detected without utilizing any Hall elements.
摘要:
An induction heating roller device that keeps leakage current within specifications and prevents the occurrence of erroneous operations caused by common mode noise. The induction heating roller device includes an induction coil, a grounded heating roller magnetically coupled to the induction coil and heated by electro-magnetic induction. A power factor improving capacitor is connected in parallel to and near the induction coil and has a grounded intermediate point. A high-frequency power source biases the induction coil. The leakage current produced by distributed capacitance between the induction coil and the heating roller is returned to the high-frequency power source via the power factor improving capacitor. Thus, the leakage current does not flow out of the induction heating roller device.
摘要:
On a semiconductor substrate, a transistor and a capacitor electrically connected to the transistor are formed, the capacitor having two electrodes made of metal and a capacitor dielectric layer between the two electrodes made of oxide dielectric material. A temporary protective film is formed over the capacitor, the temporary protective film covering the capacitor. The semiconductor substrate with the temporary protective film is subjected to a heat treatment in a reducing atmosphere. The temporary protective film is removed. The semiconductor substrate with the temporary protective film removed is subjected to a heat treatment in an inert gas atmosphere or in a vacuum state. A protective film is formed over the capacitor, the protective film covering the capacitor. With these processes, leak current of the capacitor can be reduced.
摘要:
The method of the production of a semiconductor device including the step of forming the dielectric film on or above the semiconductor substrate, placing the semiconductor substrate and the dielectric film in the atmosphere of reduced pressure and introducing into the atmosphere of reduced pressure the reaction gas for the deposition of metal or metal nitride and the oxidizing gas thereby forming the oxygen-containing conductor film formed of metal or metal nitride on the dielectric film.
摘要:
A multilayer printed wiring board includes a plurality of internal conductor layers located at different levels and separated from each other by an interlayer insulator layer, and each of the internal conductor layers has a clearance hole at a position different from that of the other internal conductor layers. The multilayer printed wiring board is perforated at an expected position of the clearance hole of a selected internal conductor layer with a rotating drill bit, while continuously measuring a torque of a motor driving the rotating drill bit and an axial displacement of the rotating drill bit. A position of the internal conductor layers along a sample hole perforated in the multilayer printed wiring board is determined on the basis of the measured torque of the rotating drill bit and the axial displacement of the rotating drill bit. Thus, a mistake of the order stacking the internal conductor layers, and a positional deviation of each internal conductor layer in comparison with the other internal conductor layers, can be found at an early stage of a manufacturing of the multilayer printed wiring board.
摘要:
It is an object to ease discomfort feeling caused by ear fullness for passengers of an elevator. An air pressure control device 104 controls an air pressure in an elevator car 102 using an air pressure adjusting device 105 such as a blower, an air compressor, etc. In the air pressure control device 104, a departure/arrival control unit 121 largely changes the air pressure in the elevator car 102 in the first period which is a time zone at the time of departing from a departure floor (or at the time of arriving at an arrival floor), and an except departure/arrival control unit 122 slightly changes the air pressure in the elevator car 102 in the subsequent second period (or in a time period until arrival). By this 2-step air pressure control, the passenger is prompted to clear the ear in a short time T1, the ear fullness is resolved by the ear clearing, and thereafter, the passenger can ascend/descend with the elevator car 102 comfortably until arriving at the arrival floor.
摘要:
First and second A/D converters perform analog/digital conversion of first and second signals of a Hall signal so as to generate third and fourth signals as digital signals. A differential conversion circuit generates a fifth signal as a single-ended signal that corresponds to the difference between the third and fourth signals. An offset correction circuit corrects offset of the fifth signal so as to generate a sixth signal. An amplitude control circuit stabilizes the amplitude of the sixth signal to a predetermined target value, and generates its absolute value, thus generating a seventh signal. A control signal generating unit generates a control signal based upon the seventh signal. A driver circuit drives a motor according to the control signal.