摘要:
(.+-.)-2-Amino-1-butanol and/or (.+-.)-mandelic acid are optically resolved with a high resolution efficiency and high optical purities by preferentially crystallizing out one of the pair of less soluble enantiomeric salts (or optical antipodes), namely (+)-2-amino-1-butanol-(+)-mandelic acid salt and (-)-2-amino-1-butanol-(-)-mandelic acid salt.
摘要:
A vehicle charging apparatus includes: an electric generator 3 that is driven by an internal combustion engine 1 and outputs an adjustable alternating-current voltage; a rectifier 4 that converts the outputted alternating-current voltage to a direct-current voltage; an electric storage device 5 that is charged with the converted direct-current voltage; and a voltage sensor 6 that measures an output voltage of the rectifier 4. The vehicle charging apparatus is provided with a control device 7 that controls the electric generator 3 for a charging voltage to be a target charging voltage calculated from the output voltage in order to suppress a charging current to be lower than a charging current upper limit value when the electric storage device 5 is charged. It thus becomes possible to achieve efficiency higher than that of a charging apparatus in the related art while preventing deterioration or damage of the electric storage device.
摘要:
In QFN packages for vehicles which are required to have high reliability, the side surface of leads is mostly covered with lead-to-lead resin protrusions, which prevent smooth formation of solder fillets during reflow mounting. When the lead-to-lead protrusions are mechanically removed using a punching die, there is a high possibility of causing cracks of the main body of the package or terminal deformation. When a spacing is provided between the punching die and the main body of the package in order to avoid such damages, a resin residue is produced to hinder complete removal of this lead-to-lead resin protrusion. The present invention provides a method for manufacturing semiconductor device of a QFN type package using multiple leadframes having a dam bar for tying external end portions of a plurality of leads. This method includes a step of removing a sealing resin filled between the circumference of a mold cavity and the dam bar by using laser and then carrying out surface treatment, for example, solder plating.
摘要:
An interrupt control unit provides controls on an interrupt from an accelerator to a CPU based on a packet transmitted to or received from a controlled object. The interrupt control unit includes: a storage part for storing therein an interrupt control timing table in which a condition of switching a mode of the interrupt control is described; and an interrupt control mode switching part for switching the mode of the interrupt control to the CPU between a permission mode and a mask mode, based on the interrupt control timing table in the storage part.
摘要:
A metalized film capacitor includes metalized films, each of which is formed of an insulating film made of dielectric, and a vapor deposited metal electrode formed on an upper surface of the insulating film. An end of the vapor deposited metal electrode extends together with an end of the insulating film, and both the ends are connected to an electrode terminal. The vapor deposited metal electrode of the metalized film includes a center region and a low resistance section that is made of Al—Zn—Mg alloy. The low resistance section is disposed at an end of the electrode and is thicker than the center region. This metalized film capacitor has high humidity resistance.
摘要:
A molded capacitor includes a capacitor-element assembly, a package covering the capacitor-element assembly, and a supporter embedded in the package. The capacitor-element assembly includes a capacitor element having a first electrode, and a busbar joined to the electrode of the capacitor element. The busbar has a terminal. The package is made of norbornene-based resin and covers the capacitor-element assembly while exposing the terminal of the busbar. The supporter has first and second end section and is made of heat-conductive insulating material. The first end section contacts the capacitor-element assembly. The second end section is exposed from the package. This molded capacitor has high heat resistance and a small, light-weighted body, and can be manufactured inexpensively.
摘要:
A chip type solid electrolytic capacitor includes a capacitor element-laminate. In the capacitor element-laminate, a plurality of capacitor elements, each having an anode portion and a cathode portion, are laminated so that the anode portions of the adjacent capacitor elements are disposed in the direction opposite to each other. Anode lead terminals are joined to the bottom faces of the anode portions of the capacitor elements disposed at both ends of the capacitor element-laminate. A cathode lead terminal is joined to the bottom face of the cathode portion of the capacitor element disposed in the center of the capacitor element-laminate. An Electrically insulating exterior resin coats the capacitor element-laminate so as to expose at least a part of the bottom faces of the anode lead terminals and a part of the cathode lead terminal.
摘要:
An interrupt control unit provides controls on an interrupt from an accelerator to a CPU based on a packet transmitted to or received from a controlled object. The interrupt control unit includes: a storage part for storing therein an interrupt control timing table in which a condition of switching a mode of the interrupt control is described; and an interrupt control mode switching part for switching the mode of the interrupt control to the CPU between a permission mode and a mask mode, based on the interrupt control timing table in the storage part.
摘要:
A clock generator includes a ring oscillator for outputting a basic signal, a divide-by-N frequency divider for dividing the basic signal by a division ratio N to generate a clock signal having a target frequency, a divide-by-two frequency divider for dividing the clock signal by two when an enable signal is on, a counter for counting the number of pulses of the basic signal for a predetermined period of time, a calculator for calculating the division ratio N, and a comparator for comparing a count value of the counter with a threshold value. When the count value of the counter is less than the threshold value, the comparator turns on the enable signal. Thus, when a temperature of the ring oscillator increases, the frequency of the clock signal is reduced to half the target frequency.
摘要:
An owner code (service-recipient code) assigned to a package, which is an object to which a service is provided by transportation installations or facilities (i.e., shared service resource) including a pickup branch office 2, a first transit station 3, a second transit station 4 and a delivery transit station 5, is read at the transit stations 3, 4. An owner (recipient) designated by the service-recipient code is authorized with a control right which enables the owner to control a service (i.e., package delivery treatment performed in the transit stations 3, 4) provided by the shared service resource with respect to the package (service-provided object).