Abstract: A power supply apparatus for controlling an ion accelerator includes a controller configured to adjust magnitude of ion acceleration in the ion accelerator. The controller controls an anode voltage applied to an anode electrode of the ion accelerator, a gas flow rate of gas flowing through a gas flow rate regulator of the ion accelerator, and magnetic flux density at an ion exit of the ion accelerator to satisfy a formula given as follows: 500 × 10 9 < ? · V a · Q d · S · B 2 where S is a sectional area of the ion exit [m2]; d is an ion accelerating region length [m]; ? is a magnetic flux bias ratio; Va is anode voltage [V]; Q is gas flow rate [sccm]; and B is magnetic flux density at the ion exit [T].

Abstract: A power supply apparatus for controlling a Hall thruster which is an ion accelerator includes an anode power supply for applying anode voltage Va to an anode of the Hall thruster, inner and outer coil power supplies for supplying coil current Ic to each of inner and outer magnetic field generating coils of the Hall thruster, a gas flow rate controller for regulating gas flow rate Q via a gas flow rate regulator, and a control unit. The control unit adjusts the magnitude of ion acceleration by the Hall thruster by controlling the anode voltage Va, the gas flow rate Q and the coil current Ic according to a quantity expressed by a function related to the anode voltage Va and the coil current Ic.

Abstract: A programmable-controller remote terminal apparatus of the invention shortens a system down time generated in replacing an I/O unit, in the I/O unit having a three-divided configuration of a remote terminal apparatus in which miniaturization and low-profile are developed. A programmable-controller remote terminal apparatus, which is connected to a programmable controller through a fieldbus, includes a communication unit and at least one I/O unit which can communicate with the communication unit through a serial bus line, wherein the communication unit has a device which obtains unit information for identifying each connected I/O unit and setting value information set in each I/O unit, and the communication unit has a backup device which can store the obtained unit information and setting value information of each I/O unit in a storage medium included in the communication unit.

Abstract: A communication system is formed with a master unit having a communication function and at least one slave unit also having a communication function connected by a network including a bus. Repeater units are inserted on the network between the master unit and the slave unit in one or more stages. As the master unit transmits request frames downstream through the network to the slave unit, the slave unit control the timing of transmitting the response frames in response successively such that the master unit receives the response frames without waiting in between regardless of repeater delay times of each of the returned response frames determined by the number of stages of the repeater units. Each communication frame that is transmitted through the network contains identification data indicative of its type and each repeater unit serves to repeat certain types of received frames only in the upstream direction.

Abstract: An inverter has a measuring part that measures an operating time such as the time interval from when a command to start a specified operation by an associated system until a signal indicating the completion of the operation is received. A comparing part compares this measured operating time with a threshold value stored in a memory and an abnormal condition is reported to a host system, depending on the result of the comparison.

Abstract: An inverter has a measuring part that measures an operating time such as the time interval from when a command to start a specified operation by an associated system until a signal indicating the completion of the operation is received. A comparing part compares this measured operating time with a threshold value stored in a memory and an abnormal condition is reported to a host system, depending on the result of the comparison.

Abstract: An inverter has a measuring part that measures an operating time such as the time interval from when a command to start a specified operation by an associated system until a signal indicating the completion of the operation is received. A comparing part compares this measured operating time with a threshold value stored in a memory and an abnormal condition is reported to a host system, depending on the result of the comparison.

Abstract: An inverter has a measuring part that measures an operating time such as the time interval from when a command to start a specified operation by an associated system until a signal indicating the completion of the operation is received. A comparing part compares this measured operating time with a threshold value stored in a memory and an abnormal condition is reported to a host system, depending on the result of the comparison.

Abstract: A tunable laser source changes the resonator length of an external resonator, which is constituted including a laser diode and a diffraction grating, by a driver controlled by a drive control section, to continuously or intermittently vary the wavelength of an emitted light from a start wavelength to a stop wavelength that are desired. A point wavelength information setting section sets the point wavelength information representing the positional information of the driver that corresponds to each resonator length of the external resonator regarding the start wavelength, the stop wavelength and a plurality of the wavelengths obtained by dividing a period between the start wavelength and the stop wavelength into arbitrary steps. An emitted wavelength information detecting section detects emitted wavelength information corresponding to the wavelength of the emitted light from the tunable laser source.

Abstract: A tunable laser source changes the resonator length of an external resonator, which is constituted including a laser diode and a diffraction grating, by a driver controlled by a drive control section, to continuously or intermittently vary the wavelength of an emitted light from a start wavelength to a stop wavelength that are desired. A point wavelength information setting section sets the point wavelength information representing the positional information of the driver that corresponds to each resonator length of the external resonator regarding the start wavelength, the stop wavelength and a plurality of the wavelengths obtained by dividing a period between the start wavelength and the stop wavelength into arbitrary steps. An emitted wavelength information detecting section detects emitted wavelength information corresponding to the wavelength of the emitted light from the tunable laser source.

Abstract: In an optical signal generating apparatus of this invention, output light from a light source driven by a light source driver is externally output from an optical receptacle through a variable optical attenuator. An output monitor unit can be detachably connected to the optical receptacle through an optical connector. When an absolute level of the output light is to be set, a CPU compares a set value from an output level setting unit with an output value from the output monitor unit and controls the variable optical attenuator and the light source driver so that a comparison error becomes zero. The CPU maintains the above control of the variable optical adjuster and the light source driver so that the light is output to be the desired level set by the output level setting unit even after the output monitor unit is disconnected from the optical receptacle including the timing at which the comparison error becomes zero.

Abstract: A tobacco filter tip attaching apparatus including a filter tip attaching portion for rolling and pasting a tip paper onto both one end portion of a cigarette and a filter tip disposed adjacent thereto, a filter tip feed portion disposed in the vicinity of the filter tip attaching portion for feeding filter tips to the filter tip attaching portion, a tip paper feed portion disposed in the vicinity of the filter tip attaching portion for feeding a tip paper from a tip paper roll to the filter tip attaching portion, a filter tip sensor for detecting that the feed of filter tip from the filter tip feed portion to the filter tip attaching portion is discontinued, a tip paper cutting sensor for detecting a cutting accident of the tip paper during feed from the tip paper feed portion to the filter tip attaching portion, and a roll diameter sensor for detecting that the diameter of the tip paper roll in the tip paper feed portion has become smaller than a predetermined value. The whole of the apparatus is covered.