Abstract: A communication module capable of reducing power consumption in an electronic unit is provided. A communication module includes: a communication section; and a control section determining handling of data received by the communication section from an external unit, based on one or both of a power state of a connected host unit and a type of the received data.

Abstract: A neutralizer 1 includes: a power supply circuit 11; an output controlling circuit 12 configured to convert a DC voltage generated by the power supply circuit 11 to a high-frequency voltage with frequency equal to or higher than an audible frequency, and thus to output the resultant high-frequency voltage alternately to two output lines at regular intervals; a transforming circuit 13 configured to raise the high-frequency voltage; a discharger 20 including 2n (n is an integer equal to one or more) discharge needles configured to output positive ions in response to application of a positive polarity voltage, and to output negative ions in response to application of a negative polarity voltage, the discharge needles being disposed while being divided into first and second groups each including n discharge needles; a polarity reversing circuit 14 configured to convert the high-frequency high voltage outputted from the transforming circuit 13, to two rectangular-wave DC high voltages with different polarities dur

Abstract: An optical connector clearing tool (1) includes a holder (2), cleaner (5), and cap (6). The holder (2) includes, e.g., a cylindrical slider (10), a cylindrical body (12) installed to be rotatable and movable in the axial direction with respect to the slider (10), and a slider return spring (13) which biases the body (12) forward to return the slider (10) to the initial position. The slider (10) has a pair of elastic pieces (16) having guide projections (17). In the outer circumferential surface of the body (12), spiral grooves (25, 26) with which the guide projections (17) engage are formed within the angular range of 360°. When the slider (10) moves forward, the body (12) rotates by the cam action of the guide projections (17) and spiral grooves (25, 26). The cleaner (5) includes, e.g., a cleaning thread (41) accommodated in a rotary pod (40), a supply reel (42), a take-up reel (43), and a cleaning pin (44), and is connected to the body (12).

Abstract: A neutralizer 1 includes: a power supply circuit 11; an output controlling circuit 12 configured to convert a DC voltage generated by the power supply circuit 11 to a high-frequency voltage with frequency equal to or higher than an audible frequency, and thus to output the resultant high-frequency voltage alternately to two output lines at regular intervals; a transforming circuit 13 configured to raise the high-frequency voltage; a discharger 20 including 2n (n is an integer equal to one or more) discharge needles configured to output positive ions in response to application of a positive polarity voltage, and to output negative ions in response to application of a negative polarity voltage, the discharge needles being disposed while being divided into first and second groups each including n discharge needles; a polarity reversing circuit 14 configured to convert the high-frequency high voltage outputted from the transforming circuit 13, to two rectangular-wave DC high voltages with different polarities dur

Abstract: In order to suppress the occurrence of damage on a press-fit joining wiring board, a peak value of stress generated on the board in the case of a press-fitting a press-fit terminal into a through-hole is reduced so that it can not exceed the design standard value of the board. In the press-fit terminal in which a body part, retaining part, introducing part and forward end part are integrally formed, a cross-sectional area of the introducing part is reduced to be smaller than that of the retaining part, so that an intensity of the elastic force of the introducing part is decreased to be lower than that of the elastic force of the retaining part. Alternatively, on the wiring board, elastic material is filled into resin for combining sheet-like base material of the board so as to relieve an intensity of stress generated on the board itself.

Abstract: In order to suppress the occurrence of damage on a press-fit joining wiring board, a peak value of stress generated on the board in the case of a press-fitting a press-fit terminal into a through-hole is reduced so that it can not exceed the design standard value of the board. In the press-fit terminal in which a body part, retaining part, introducing part and forward end part are integrally formed, a cross-sectional area of the introducing part is reduced to be smaller than that of the retaining part, so that an intensity of the elastic force of the introducing part is decreased to be lower than that of the elastic force of the retaining part. Alternatively, on the wiring board, elastic material is filled into resin for combining sheet-like base material of the board so as to relieve an intensity of stress generated on the board itself.

Abstract: Nozzle openings 15a each including a straight duct portion 15s and a tapered portion 15t are situated at an upstream position of an air flow with respect to the straight duct portion. The nozzle openings are formed in a nozzle plate 15 such that the nozzle openings 15a are arranged in grid, and airborne microorganisms passing through the nozzle plate 15 can be effectively collected to form colonies. A degree of cleanness is measured by counting the colonies visually.

Abstract: After supporting a petri dish S having a culture medium K contained therein with a given thickness on a petri dish holder 17 of a housing 14, a nozzle holder 13 is clamped at a top of the housing 14. When a motor 19 is energized to rotate a high static pressure fan 18, air is introduced through nozzle openings 12a, and flows through a space between the nozzle 15 and the culture medium K. By setting a distance between the nozzle and the culture medium to 0.5-1.5 mm, a high collection efficiency can be attained.

Abstract: The housing 10 is formed such that when the tilting angle of a miniature card 70 is in a predetermined range of acute angle (e.g., 20 to 25 degrees), the lower end 70a of the miniature card 70 is insertable into the groove 14 of the housing 10. In addition, guide portions 27 and 28 are provided on the front surface of the rear wall 11 and on the upper end of the front wall 12, respectively, to lead the lower end 70a of the miniature card 70 which is tilted to an angle greater than the predetermined range. Thereby, the space required for the installation of the miniature card is made relatively small to produce a compact connector. The groove 14, into which the lower end 70a of the miniature card 70 is inserted for the installation of the miniature card, is formed or defined by the rear wall 11 and the front wall 12 of the housing 10, and lateral arms 13 are provided at the lateral ends of the rear and front walls 11 and 12 to connect these walls.

Abstract: A plurality of signal contact grooves 21 are provided in a laterally extending row, each groove opening through the front surface of a rear wall 11 of a housing 10. In each of the signal contact grooves 21, a first signal-transmission contact 30 and a second signal-transmission contact 40 are mounted in a front and rear pair. The second arm portions 44 of the second signal-transmission contacts 40, which are positioned rearward, are positioned above and extend longer than the second arm portions 34 of the first signal-transmission contacts 30, which are positioned forward. As a result, the contact portions 35 and 45 of the first and second signal-transmission contacts 30 and 40 are aligned in upper and lower rows in front of the front surface of the rear wall 11. This design is advantageous in reducing the number of steps necessary for the production of the signal-transmission contacts of the connector, and it also makes the mounting of the contacts into the housing easy, improving productivity.

Abstract: A multi-level memory card connector has a plurality of memory card receiving compartments located in vertical alignment with each other at upper and lower levels and memory card ejection mechanisms at the sides of respective compartment also in vertical alignment. Ejection buttons for actuating respective ejection mechanisms are exposed to a memory card insertion face at upper and lower levels but are laterally offset to reduce the risk of the operators finger inadvertently pressing two adjacent buttons simultaneously.

Abstract: A surface-mounted electronic connector in which board connecting end portions of contacts of the connector extend in mutually parallel, closely spaced apart, coplanar relation and are maintained spaced apart above the board by feet of equal height which depend from tips of respective end portions. The height of each foot is not less than the sum the above-board height of a connection portion of a conductive layer of the board and the height of a reflow solder layer or pad thereon.

Abstract: An air flow visualizing device for introducing clean steam generating by a steam generating device into an insulating chamber in which a refrigerant such as liquid nitrogen or the like is enclosed so as to generate a misty tracer by rapidly cooling down the steam. The generated misty tracer is directly introduced into an air flow to be visually recognized or introduced after controlling the temperature of the misty tracer so as to be easily captured by the air flow.

Abstract: This electrostatic filter dust collector has a dust collecting section which is assembled by using a mini-pleat type filter member having a small width of the fold thereof and a short distance between the adjacent ridge portions thereof, whereby the dust collector is reduced in both its size and thickness. Since a plurality of spacers are inserted into the filter member from the upstream and downstream sides thereof, the percentage of the contacting area of the spacers with respect to the filter member is low, and the percentage of the dust collecting area thereof is high. In addition, it is possible to obtain a sufficiently large insulating distance. Either or both of the upstream and downstream spacers are electrically conductive, and a high voltage is applied between the corresponding conductive spacers, so that a uniform and stable electric field is generated on the filter member as a whole. This enables a high dust collecting efficiency to be obtained.

Abstract: This electrostatic filter dust collector has a dust collecting section which is assembled by using a mini-plate type filter member having a small width of the fold thereof and a short distance between the adjacent ridge portions thereof. Since a plurality of insulating spacers are inserted at suitable intervals into the filter member from the upstream and downstream sides thereof, the percentage of the contacting area of the spacers with respect to the filter member is low, and the percentage of the dust collecting area thereof is high. Electrodes are provided on the upstream and downstream ridge portions of the filter member, and a high voltage is applied between these electrodes, so that a uniform and stable electric field is generated on the filter member as a whole. This enables a high dust collecting efficiency to be obtained.

Abstract: An internal combustion engine has an intake system, a fuel injector for injecting fuel into the intake system, a means for supplying pressurized fuel to the fuel injector, and a means for controlling the pressure difference between the pressurized fuel and the current value of atmospheric pressure to be substantially equal to a determinate value. In this fuel injection method, an actual fuel injection time interval is calculated by determining a basic fuel injection time interval according to engine operational parameters, and subsequently: if the current value of atmospheric pressure is higher than a certain standard value, then a reduction correction amount is applied to the basic fuel injection time interval, to derive the actual fuel injection time interval, but otherwise an increase correction amount is applied. Then the fuel injector is controlled to be open for substantially the actual fuel injection time interval. A device is also disclosed for practicing this method.

Abstract: A high-efficiency electrostatic air filter device having high dust collecting efficiency and a long service life is provided. The device is composed of a charging section for electrically charging the dust particles in a gas to be treated, and a dust collecting section provided with a filter medium meandering in the direction orthogonal to the direction of passage of the gas to be treated, a plurality of separator electrodes disposed in the spaces between every adjoining part of said meandering filter medium with or without the medium of insulating spacers from both upstream side and downstream side of said filter medium, and electroconductive elements provided for effectively supplying a high DC voltage between said separator electrodes.

Abstract: An electronic fuel injecting method and device for an internal combustion engine, wherein a correction in accordance with the operating conditions or the like of the engine is effected on a basic injection time obtained in accordance with an intake pressure or an intake air flowrate, and a rotational speed of the engine, to thereby provide fuel in synchronism with the rotation of the engine. When the operating conditions of the engine reach a predetermined condition, fuel is provided at a predetermined injection time not in synchronism with the rotation of the engine. When requirements for non-synchronous injection take place during synchronous injection, the time period for the synchronous injection is prolonged by the appropriate non-synchronous injection time. When more than one non-synchronous injection requirement occurs during a single synchronous injection, the synchronous injection time is lengthened by a time corresponding to only one of the non-synchronous injection requirements.

Abstract: An improved high-efficiency electrostatic air filter device which has a high efficiency of dust collection and a long service life. The device is composed of a charging section having a plurality pairs of electrodes to charge the dust particles in the gas to be treated; and a dust collecting section which is provided with a corrugated filter medium and spacer electrodes that are disposed in the troughs of the corrugations of the filter medium, and one of each pair of the electrodes in the charging section and the specer electrodes on one side of the filter medium in the dust collecting section are applied with high electric voltage.