摘要:
To provide a regulator circuit capable of preventing oscillation of output voltage when an overcurrent regulating function is activated voltage across resistor 31 is lower than the voltage of voltage source VR2, output of hysteresis comparator 51 is low-level, n-type MOS transistor 63 is turned off, and capacitor 62 is charged to the voltage level of power supply line Vcc under the normal condition. On the other hand, under an overcurrent condition, hysteresis comparator 51 becomes high-level, n-type MOS transistor 63 is turned on, and the charge in capacitor 62 is discharged. Because differential amplifier circuit 41 selects the signal with a lower voltage out of 2 positive side input signals, negative feedback control is applied to the output voltage in reference to voltage source VR1 under the normal condition, and voltage source 64 under the overcurrent condition. In addition, because the voltage at positive input terminal +2 rises at a fixed rate when moving from the overcurrent condition to the normal condition, sudden changes in the output voltage can be restrained.
摘要:
The objective of this invention pertains to a drive signal supply circuit for a switching regulator. Switching regulator 1 of the present invention has amplitude center adjusting circuit 20. In switching regulator 1, a sawtooth wave and the output signal of error amplifier 11 are input to comparator 12, and a pulse signal that sets the ON/OFF state of switching transistor 2 is generated. Since the amplitude center voltage of the sawtooth wave is adjusted corresponding to the power source voltage Vcc, even when power source voltage Vcc is changed rapidly, the amplitude center adjusting circuit 20 can adjust the amplitude center voltage of the sawtooth wave at a high speed matching the rapid fluctuations, and this signal is output to comparator 12. Consequently, the pulse signal output from comparator 12 can follow the rapid fluctuations of power source voltage Vcc. As a result, the output voltage can follow the rapid fluctuations of the power source voltage. Consequently, the problem in the prior art, that is, instability due to the output voltage not being able to follow the fluctuations of the power source voltage Vcc, can be solved.
摘要:
A network management device for managing a plurality of network elements has a network element management data acquisition unit for acquiring, in stages, various management data possessed by the network elements when a session with a network element is resumed and when the network management device itself is started up, a rule management table for storing a dependence relationship between an operation and management data necessary to execute the operation, a feasible operation decision processing unit which, when an operation has been specified, refers to the dependence relationship to determine whether management data necessary to execute the operation has been acquired. If the necessary management data has been acquired, a network management execution unit executes network management conforming to the operation.
摘要:
A magnetic recording medium improved in electromagnetic conversion characteristics and runnability is disclosed. The magnetic recording medium is formed by coating a non-magnetic substrate with a magnetic layer. The magnetic layer contains a fine ferromagnetic powder having a specific surface area larger than 45 m.sup.2 /g, a binder having polar groups such as --SO.sub.3 M and --OSO.sub.3 M in the molecule in an amount of 0.2 to 0.8 .mu.mol per m.sup.2 of the specific surface area of the ferromagnetic powder, and a compound having 2 or more carboxylic groups in an amount of 0.5 to 5.0 .mu.mol per m.sup.2 of the specific surrface of the ferromagnetic powder. The magnetic layer is further incorporated with a carbon powder having a mean diameter of 200 to 400 nm and a specific surface area of 5 to 20 m.sup.2 /g to improve the runnability of the magnetic recording medium while keeping the improved magnetic characteristics.
摘要:
An information processing unit is disclosed that includes a load circuit, a pair of terminals that are capable of being connected to and removed from a direct current power source, a first capacitor connected between power terminals of the load circuit, a rush current suppressing circuit configured to suppress rush current flowing from the direct current power source to the first capacitor or the load circuit via the terminals, a buffer circuit connected between the terminals and buffers voltage fluctuation between the terminals, a second capacitor connected in series with the rush current suppressing circuit and the first capacitor in a line parallel to the buffer circuit, a switch connected parallel to the second capacitor, and a first controller configured to turn on the switch when a designated period of time is elapsed after hot insertion of the terminals into the direct current power source.
摘要:
Provided is a mask blank substrate that can reduce the change in flatness of a main surface thereof before and after chucking to make very small the position offset caused by a photomask and that can significantly reduce the difference in tendency of substrate deformation before and after chucking between photomasks. In a mask blank substrate having two main surfaces and four end faces, a central point is set on the main surface, a first axis of symmetry that passes through the central point and that is parallel to one of the end faces and a second axis of symmetry that passes through the central point and that is perpendicular to the first axis of symmetry are respectively set, measurement points are set in the form of a grid with respect to the first axis of symmetry and the second axis of symmetry so as to measure heights of the main surface from a reference plane at the measurement points, respectively, differences each between measured height values at those measurement points located at positions that are axisymmetric with respect to the first axis of symmetry are calculated, and those differences corresponding to at least 95% of the total number of the calculated differences between the measured height values are within a predetermined value.
摘要:
A plurality of primary power supplies convert a primary power supply voltage into intermediate voltages. Secondary power supplies convert the intermediate voltages converted by the primary power supplies into supply voltages and output the same. A timing adjuster is inputted thereto plural sorts of power converted into the intermediate voltages from the plural primary power supplies to perform timing adjustment to absorb a difference in start timing between the plural primary power supplies, and causes the secondary power supplies to output the supply voltages. When the power is supplied from the plural power supplies to the load elements, stable power can be supplied to the load elements even if a difference in start time generates between the plural power supplies.
摘要:
A display device comprising a plurality of scan signal lines; a plurality of picture signal lines three-dimensionally intersecting the plurality of scan signal lines; and numerous TFT elements arranged in a matrix; and having a display panel in which each of the TFT elements has a gate connected to one of the plurality of scan signal lines, and a drain or source connected to one of the plurality of picture signal lines; wherein the TFT elements respectively differ in terms of channel width, channel length, or both, depending on a distance from a signal input terminal of the scan signal line to which the gate is connected and a distance from a signal input terminal of the picture signal line to which one of the drain and the source is connected.
摘要:
The present invention is intended to prevent the flow of a large input current into a DC/DC converter, to which power is fed from a power supply, before a supply voltage delivered from the power supply reaches a rated output voltage. A control unit included in the DC/DC converter includes a steady state detection block that detects a condition in which an input voltage to be applied to the DC/DC converter has been stabilized, and inhibits the power feed from the DC/DC converter until the input voltage delivered from a power supply in a preceding stage is stabilized.
摘要:
[Problem] To provide a compound which has an excellent activity to modulate the functions of CCR4 or TARC and/or MDC and can be used for the prevention and/or treatment of various inflammatory diseases, allergic diseases, autoimmune diseases and the like. [Means for Resolution] An acylaminopiperidine compound represented by the formula (I) or a pharmaceutically acceptable salt thereof. [Symbols in the formula represent the following meanings; A: a single bond or C1-C6 alkylene, R1: phenyl which may be substituted, etc., R2: —H or C1-C6 alkyl, R3: —H, C1-C6 alkyl or C3-C8 cycloalkyl, R4: pyrrolidin-2-yl which may be substituted, etc., and D: benzene ring or pyrazole ring].