Abstract:
PROBLEM TO BE SOLVED: To provide a temperature detector that has a thermostat or a thermistor directly attachable to a heating unit and can detect temperature of the heating unit in a simple structure. SOLUTION: This temperature detector includes a transformer, a thermostat that is directly attached to a conductive portion of a heating unit and has a contact point which is opened or closed corresponding to whether or not temperature of the heating unit becomes equal to or higher than predetermined temperature and is connected to a secondary coil of the transformer, and a DC voltage source and a transistor which are adapted to supply a required AC power to a primary coil of the transformer. The temperature detector further includes a current detecting resistor for detecting a current flowing in the primary coil of the transformer, and a comparator circuit that detects a voltage generated between both ends of the current detecting resistor due to the current flowing in the current detecting resistor and outputs an alarm signal when a level of the current flowing in the primary coil of the transformer exceeds a preset threshold. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a collector electrode contributing to further downsizing and a higher output of an electron tube, and an electron tube equipped with the same. SOLUTION: The collector electrode provided by the electron tube is formed with the use of a composite material of molybdenum and copper, or a composite material of tungsten and copper. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a traveling wave tube suppressing heat conductivity reduction of a contact part between a metal tape and a coaxial inner conductor to suppress a reduction in heat radiating capacity of heat from a helix. SOLUTION: The traveling wave tube includes the helix realizing mutual action of an externally input high frequency signal and electron beams, the U-shaped metal tape attached to an end of the helix at its bottom and the coaxial internal conductor inputting/outputting the high frequency signal to/from the helix. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To enable characteristic impedance to be easily adjusted by an external coaxial inner conductor. SOLUTION: There are provided: a waveguide 6 for outputting a high frequency; a vacuum enclosure 7 provided with a delay circuit 8; a connecting pipe 7b connecting the waveguide 6 and the vacuum enclosure 7; an insulating window member 9 provided at the connecting pipe 7b for air-tightly sealing a side of the vacuum enclosure 7 and a side of the waveguide 6; an external coaxial inner conductor 11 whose one end is supported by the waveguide 6; and an internal coaxial inner conductor 12 whose one end is abutted to the delay circuit 8 and the other end of which is connected to the external coaxial inner conductor 11. The waveguide 6 then comprises a screw 13 supporting the external coaxial inner conductor 11 movably in an axial direction. Furthermore, a terminal portion 11a of the external coaxial inner conductor 11 is connected with a terminal portion of the internal coaxial inner conductor 12 movably in the axial direction. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a power supply further reducing size and costs, and to provide a high-frequency circuit system having the power supply. SOLUTION: There are provided: a transformer; a primary power supply for supplying an AC voltage having at least two frequencies to the primary winding of the transformer; and a filter circuit that has a different amount of attenuation depending on the frequency of an AC voltage and is connected to the secondary winding of the transformer. The frequency of the AC voltage supplied to the primary winding of the transformer is controlled so that a desired AC voltage is outputted from the filter circuit connected to the secondary winding of the transformer. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an electron tube capable of restraining cost increase while achieving a wider bandwidth. SOLUTION: The electron tube, equipped with a helix as a high-frequency circuit making an electron beam interact with high frequency signal, is structured to have a shell enveloping the helix, and a plurality of pillars supporting the helix in the shell with a conductive material arranged at a part abutted with an inner wall of the shell, with the part contacting the helix covered with a dielectric. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electron gun with little individual difference due to variation in manufacture, and with good electron emission property. SOLUTION: An electron gun is provided with a cathode pellet discharging electrons, a heater cap integrating a heater imparting heat energy for discharging electrons to the cathode pellet, a Wehnelt electrode for focusing an electron beam in which the average angle of a surface against the outermost shell of the electron beam is formed to be a shape matching a pierced angle, and a retainer installing and fixing the cathode pellet on the heater cap by restraining the periphery edge of the cathode pellet to the heater cap and a part covering the periphery edge of an electron discharging surface of the cathode pellet works as a part of the Wehnelt electrode. COPYRIGHT: (C)2006,JPO&NCIPI