摘要:
A gas turbine has a cooling air system supplying air for cooling a high temperature part of the gas turbine and a spray air system supplying air for spraying fuel into a combustor and is formed so that a part of high-pressure air compressed by a gas turbine compressor is used as air of the cooling air system and spray air system, wherein a heat exchanger and a boost compressor are arranged downstream of the outlet of compressed air of the gas turbine compressor, and the boost compressor is composed of a parallel connection of a compressor driven by the turbine shaft and ae compressor driven by a driven source other than the turbine shaft, and pressurized air from the boost compressor is used as air for the cooling air system and the spray air system.
摘要:
A semiconductor device includes a source region embedded in the surface of the second semiconductor region, a drain region embedded in the surface of the first semiconductor region separated from the second semiconductor region, a gate electrode located on the second semiconductor region, an insulation film located on the first semiconductor region between the second semiconductor region and the drain region, a voltage dividing element dividing the voltage between the gate electrode and the drain region, and a charge transfer limiting element limiting transfer of charge from the voltage dividing element to the drain region.
摘要:
A semiconductor device includes a source region embedded in the surface of the second semiconductor region, a drain region embedded in the surface of the first semiconductor region separated from the second semiconductor region, a gate electrode located on the second semiconductor region, an insulation film located on the first semiconductor region between the second semiconductor region and the drain region, a voltage dividing element dividing the voltage between the gate electrode and the drain region, and a charge transfer limiting element limiting transfer of charge from the voltage dividing element to the drain region.
摘要:
A startup circuit includes a MOSFET that is connected between a startup power source and an auxiliary power source made of a smoothing capacitor and passes a startup current from the startup power source to the smoothing capacitor, a JFET that has a drain terminal connected to a drain terminal of the MOSFET and a source terminal connected through a resistor to a gate terminal of the MOSFET, and a pinch-off voltage controller that controls a pinch-off voltage of the JFET to a first reference voltage at startup and to a second reference voltage, which is lower than the first reference voltage, after startup.
摘要:
A gas turbine has a cooling air system supplying air for cooling a high temperature part of the gas turbine and a spray air system supplying air for spraying fuel into a combustor and is formed so that a part of high-pressure air compressed by a gas turbine compressor is used as air of the cooling air system and spray air system, wherein a heat exchanger and a boost compressor are arranged downstream of the outlet of compressed air of the gas turbine compressor, and the boost compressor is composed of a parallel connection of a compressor driven by the turbine shaft and ae compressor driven by a driven source other than the turbine shaft, and pressurized air from the boost compressor is used as air for the cooling air system and the spray air system.
摘要:
Switching power supply apparatus, which allows steady-state power consumption due to starting current supply circuit to be cut is provided. Comprising a starting current supply circuit which, at turn-on of an input power supply, from a high-voltage power supply provided by input power supply or a high-voltage positive electrode of a switching device, supplies an operating current to a switching control circuit through a switch element comprised of a depression mode FET; and a steady-state current supply circuit which supplies the operating current to the switching control circuit, using a low-voltage power supply provided by a secondary electromotive force of a transformer after start of the switching operation, the apparatus uses the low-voltage power supply to supply a bias voltage to a path of a leakage current flowing from the high-voltage power supply to a grounding terminal through the switch element in the off-state, thereby blocking the leakage current.
摘要:
A transparent coated molded product comprising a transparent synthetic resin substrate and two or more transparent cured material layers provided on at least one part of the surface of the transparent synthetic resin substrate, wherein an inner layer in contact with the outermost layer of the two or more transparent cured material layers is an abrasion-resistant layer which is a cured material of an active energy ray-curable coating agent (A) containing a polyfunctional compounds (a) having at least 2 active energy ray-curable polymerizable functional groups and the outermost layer is a silica layer which is a cured material of a curable coating agent (B) of polysilazane or a curable coating agent (B) containing polysilazane.
摘要:
A startup circuit includes a MOSFET that is connected between a startup power source and an auxiliary power source made of a smoothing capacitor and passes a startup current from the startup power source to the smoothing capacitor, a JFET that has a drain terminal connected to a drain terminal of the MOSFET and a source terminal connected through a resistor to a gate terminal of the MOSFET, and a pinch-off voltage controller that controls a pinch-off voltage of the JFET to a first reference voltage at startup and to a second reference voltage, which is lower than the first reference voltage, after startup.
摘要:
A vapor deposition material which is a molded body composed of powdery zirconia and a stabilizer, the molded body having a fine structure constituted of a mixture of granules of zirconia particles and non-granulated particles; granules of particle diameter ranging from 20 to 300 .mu.m constitute 20 to 90% of the molded body; the granules of the zirconia particles containing substantially no stabilizer, and being constituted of crystals of a monoclinic phase and a cubic phase with a ratio of the monoclinic phase of 70% or higher; and the particles constituting the granules having an average particle diameter from 0.5 to 15 .mu.m. A process for vapor deposition which employs the above vapor deposition material, and further a member is provided of a base article coated directly, or with interposition of a third film, with a thin zirconia film. The vapor deposition coating material has improved thermal shock resistance on EB irradiation, not causing abrupt boiling of molten matter formed by EB irradiation, being capable of forming stable melt pool, and having a stable evaporation rate.
摘要:
A gas turbine has a cooling air system supplying air for cooling a high temperature part of the gas turbine and a spray air system supplying air for spraying fuel into a combustor and is formed so that a part of high-pressure air compressed by a gas turbine compressor is used as air of the cooling air system and spray air system, wherein a heat exchanger and a boost compressor are arranged downstream of the outlet of compressed air of the gas turbine compressor, and the boost compressor is composed of a parallel connection of a compressor driven by the turbine shaft and ae compressor driven by a driven source other than the turbine shaft, and pressurized air from the boost compressor is used as air for the cooling air system and the spray air system.