Abstract:
A magnetic circuit, provided with a short magnet and short magnet that are arranged in an array, and a yoke and a yoke provided so as to sandwich the short magnet and short magnet. The short magnet and short magnet, are arranged, that have a space between them that is a predetermined gap or less in the arrangement direction of the array respectively. In addition, the short magnet and short magnet are arranged so that one magnetic pole is located on the side toward one of the pair of yokes and, and the other magnetic pole is located on the side toward the other yoke.
Abstract:
A light source device includes: a rod-shaped light source or an array light source extending in a main scanning direction; a reflector that is placed opposite the rod-shaped light source or the array light source, extends in the main scanning direction, and reflects light output from a side face of the rod-shaped light source or the array light source; and a plurality of reflector supports that are arranged at an interval along the main scanning direction and support the reflector.
Abstract:
An electronic ballast A includes an inverter circuit for converting a DC voltage into a high-frequency voltage, a resonant circuit which is connected between outputs of the inverter circuit and lights a discharge lamp at a high frequency by a resonant action, a dimming circuit for changing an output voltage to the discharge lamp by changing an operating frequency of the inverter circuit, a DC component detecting circuit for detecting a DC voltage component of the discharge lamp and a control operating circuit which detects an output signal of the DC component detecting circuit for every predetermined period to reduce or stop an output to the discharge lamp in the case where the output signal exceeds a predetermined reference value and to prohibit the protection operation when periodic change amount in the output signal reaches a predetermined value or higher.
Abstract:
There is provided a stent which can be surely indwelled up to a deeper place than an obstructed or stenosed portion of a tubular organ so as to exhibit an expansion force and keep flexibility.The stent 1 has a plurality of annular units 10 and 20 each made of a linear portion 11 which extends circumferentially while folding in a zigzag manner and which is connected annularly, and connection portions 40 which connect axially adjacent ones of the annular units with each other. Predetermined annular units 20 have radiopaque markers 30 each fixedly attached to a midway between one folded portion 13 and a next folded portion 13 in the linear portion 11 located in a predetermined circumferential position.
Abstract:
A power amplifier includes: a distortion compensating circuit that causes a bias circuit to have an output impedance so that a subsequent block bipolar transistor for signal amplification-use has a maximized saturated output power; and a distortion compensating circuit that causes a bias circuit to have an output impedance so that a distortion of an output power of the power amplifier 1 with respect to an input power is canceled by a distortion characteristic of an output power with respect to an input power of the subsequent block bipolar transistor for signal amplification-use which has a maximized saturated output power and a distortion characteristic of an output power with respect to an input power of the preceding block bipolar transistor for signal amplification-use. This makes it possible to provide a power amplifier that allows reduction in saturated output power brought by realization of a highly efficient low-distortion power amplifier.
Abstract:
A transmission system includes: a transmission-side device that has a transmission-side clock generation unit that generates a first clock signal on the basis of a reference clock signal ; a clock extraction unit that removes a data clock signal superimposed with transmission data to a reception-side device; a clock difference acquisition unit that determines a difference between the first clock signal and the data clock signal; and a packet generation unit that packetizes the information on the difference determined by the clock difference acquisition unit; and the reception-side device that has a reception-side clock generation unit that generates a second clock signal on the basis of the reference clock; a packet reception unit that receives the information on the packetized difference from the transmission-side device; and a data clock regeneration unit that regenerates the data clock signal on the basis of the second clock signal and the difference information.
Abstract:
A control means has an adjustment function in a microprocessor to adjust variations in an output to a discharge lamp due to variations in components by correcting a duty ratio of a PWM signal for varying an operating frequency of an inverter circuit so that a detected value of a second detection circuit falls within a target range. The microprocessor switches paths to transmit the PWM signal between a path passing through a feedback circuit and a path passing through a voltage follower circuit by switches a switch circuit to supply the signal through the path passing through the voltage follower circuit in adjusting output variations in the preheating mode and the starting mode.
Abstract:
The present invention provides a transmission apparatus including transmitting side line interfaces which convert packet format data sent from an asynchronous network to a SONET/SDH frame format and then transmit the data, multiple receiving side line interfaces which receive the SONET/SDH frame format data and convert the data to packet format data and a circuit switching section which performs circuit switching. The transmitting side line interfaces include a variable length frame mapping section which converts the packet format data to variable length frame format data and a time division multiplexing mapping section which converts the variable length frame format data to the SONET/SDH frame format data. The receiving side line interfaces include a variable length frame demapping section which reconverts the SONET/SDH frame format data to variable length frame format data.
Abstract:
Line states are detected accurately to efficiently test subscriber lines, thereby improving the reliability and quality of maintenance and operation. Line monitoring means monitors line states based on at least one of loop information of lines and status information of bearer channels. Subscriber line testing means conducts subscriber line testing in accordance with the line states.