摘要:
A voltage-controlled oscillator has a feedback circuit connected to the gate of a transistor which controls a current flowing through an oscillation unit. The feedback circuit applies a voltage depending on the DC voltage of an oscillated signal to the gate of the transistor. When the oscillated signal is reduced in level to lower the DC voltage, the feedback circuit lowers the voltage applied to the gate of the transistor. The current flowing through the oscillation unit is reduced to increase the level of the oscillated signal. When the oscillated signal is increased to increase the DC voltage, the feedback circuit increases the voltage applied to the gate of the transistor. The current flowing through the oscillation unit is increased to reduce the level of the oscillated signal. The feedback process prevents the voltage-controlled oscillator from operating unstably regardless of manufacturing variations of transistors from design values.
摘要:
The present invention provides a sheet made of a polyester resin composition, which composition shows no adhesion to calender rolls and can be made into a sheet by calendering. Specifically, the present invention provides a sheet made of a polyester resin composition, wherein the polyester resin composition comprises100 parts by weight of a copolyester resin obtained by replacing, in production of polyethylene terephthalate resin, 10 to 40 mole % of the ethylene glycol component with cyclohexanedimethanol, and0.1 to 2 parts by weight of a fatty acid ester lubricant.
摘要:
A dynamic latch circuit or a dynamic flip-flop circuit of the present invention includes a transfer gate to be controlled by a clock and provided with a complementary configuration using a P-channel and an N-channel MOS (Metal Oxide Semiconductor) transistor. The transfer gate allows the individual node included in the circuit to fully swing between a high potential power source and a low potential power source. This causes a minimum of decrease to occur in an ON current for driving the respective node and thereby realizes high-speed operation. Further, the balance of the rising time and falling time of an output signal is improved, reducing the deviation of the duty of the output signal from 50%. The circuit is therefore operable with sufficient operation margins at positive- and negative-going edges. Consequently, the entire macrocircuit using the circuit of the present invention can have its operation frequency and therefore power consumption lowered.
摘要:
In a hot runner exchange apparatus for use in a vertical type injection molding machine made up of a metal mode, a mold clamping device for opening and closing the metal mold in the vertical direction, an injection device having a nozzle provided at the front end of a heating cylinder and a hot runner acting as a passage of molten resin supplied to the metal mold, there are provided a hanger for hanging the hot runner, a device for vertically moving the hung hot runner and a driving device for moving the hung hot runner in the axial direction thereof.
摘要:
Products having a relatively large thickness such as optical lenses for various industrial applications are molded by an injection molding machine by advancing the screw by operating an injection cylinder for filling metered quantity of a molten resin into a metal mold. The screw is rotated while it is being advanced. A plurality of position setters are provided along the stroke of the screw and their outputs are respectively compared with the output of a screw position detector by using comparators. The outputs of the comparators are used to effect a program control of screw rotation in multistages. According to a modified embodiment, during the filling step effected by screw rotation, the injection speed is varied stepwisely. The injection speed is reduced to zero for a short interval and then increased again. The number of revolutions of the screw, however, is maintained at a constant value until the injection speed is increased again.
摘要:
An apparatus applicable to a digital copier, a digital printer, a printer using a mimeograph and others for specifying a desired region of an original document by use of a marking sheet, and erasing, extracting or otherwise editing a portion of the image of the original document which lies in the particular region. An image of the marking sheet read by an image scanner are converted into two-level pixel data. The pixel data are reduced in density before written in a memory, such that pixels are extracted, or thinned, one out of each predetermined number of pixels in each of the column and row address directions of the memory. One of two differnt image modes is selected: a text mode with applies MTF (modulation transfer function) processing to a text document, and a graphic mode which applies dither processing or like halftone processing to a graphic document. When the marking sheet is to be read, the text mode is set up automatically.
摘要:
In a solar cell module 100, the wiring member 11 is connected onto the connection electrode 40 through a resin adhesive 12; and the connection electrode 40 includes a plurality of projections 40a which are in direct contact with the wiring member.
摘要:
In the solar cell module 100, the resin adhesive 12 includes a plurality of removed portions 12a on the principal surface of the photoelectric conversion part 20 by removing the resin adhesive 12 in a vertical direction. The plurality of removed portions 12a are formed in the row in cross directions K.
摘要:
A power generator according to the present invention includes: a power generating section (101) for outputting DC energy; an oscillator (103) for converting the DC energy into RF energy having a frequency f0; a first antenna (107) for transmitting the RF energy; a second antenna, which receives, by coupling a resonant magnetic field, at least a part of the RF energy transmitted by the first antenna (107); and an output converting section (120) for converting the RF energy supplied from the second antenna (109) into AC energy having a lower frequency than the RF energy. If the oscillator (103) has a voltage step-up ratio Voc, the output converting section (120) has a voltage step-up ratio Vtr, the first inductor (107a) of the first antenna (107) has an inductance L1, the second inductor (109a) of the second antenna (109) has an inductance L2, and the first and second antennas (107, 109) have a coupling coefficient k, the power generator satisfies (L2/L1)≧(k/(Voc×Vtr))2.
摘要:
A mobile electronic apparatus includes a memory that stores a search range of an object and a processor that executes a process. The process includes acquiring a moving speed of the mobile electronic apparatus, determining the search range of the object on a basis of the moving speed, detecting the object existing within the search range, detecting whether a display unit of the mobile electronic apparatus is in an active state, and notifying that the object is detected when the display unit is detected to be in the active state and the object existing within the search range is detected.