摘要:
A method of producing an ocular lens, comprising the steps of: (a) preparing a lens blank which gives an ocular lens, the lens blank having a concave back surface and a convex front surface, at least a portion of the front surface being tapered to give a tapered surface; (b) forming a back curved surface of the ocular lens by effecting a cutting operation on the concave back surface of the lens blank, while the lens blank is supported on a spindle of a back surface cutting device such that the tapered surface of the lens blank is drawn onto a tapered holding surface of the spindle under a negative pressure applied to the lens blank, the tapered holding surface following a profile of the tapered surface of the lens blank; and (c) forming a front curved surface of the ocular lens by effecting a cutting operation on the front surface of the lens blank whose back surface has been cut to form the back curved surface, while the lens blank is supported on a spindle of a front surface cutting device such that the back curved surface of the lens blank is drawn onto a holding surface of the spindle of the front surface cutting device under a negative pressure applied to the lens blank.
摘要:
A switching power supply system controlling switching operations of switching devices by a control circuit to convert an input voltage into a desired output voltage, the system being provided with a under voltage lock out circuit including: an input voltage detection unit detecting an input voltage and producing an input voltage digital signal corresponding to the input voltage Vin; and a voltage level comparison unit carrying out digital comparison of the input voltage digital signal with each of two voltage detection level data and outputting the results of the comparisons as an output signal, in which by changing voltage detection level data stored in two registers, desired voltage detection levels and hysteresis characteristic are easily actualized.
摘要:
A potentiometric titration method including calculating a titration curve and a differential curve from measured values; computing a straight line (D) connecting the two measured values on the titration curve which are present adjacent to a tentative terminal point (P); computing a first estimation line (B1) and a second estimation line (B2) by a least squares method based on a set of the measured values (d1), (d2) and (d3) and a set of the measured values (d4), (d5) and (d6), respectively, on the titration curve, which are respectively spaced by a predetermined level apart from the tentative terminal point (P) by using the number of decision points (n) as an index where the number of decision points (n) represents the number of measured values on the previously set titration curve; computing an intermediate line (C) between the first estimation line (B1) and the second estimation line (B2); and computing an intersection point (A) of the intermediate line (C) and the straight line (D) to read out a value of the intersection point on an abscissa axis as a terminal point (a) of the titration.
摘要:
There is proposed a control unit for an internal combustion engine, which comprises a boost circuit, a switching element, a current detecting resistor and a controller and is designed to be actuated such that the boost circuit is used to boost a power source voltage to create a boosted voltage and the controller is used to control the switching element so as to enable the boosted voltage to flow to the injector solenoid coil. This control unit is designed such that, when the boost circuit goes out of order, the injector solenoid coil is excited by making use of the power source voltage without using the boosted voltage and without creating a peak current to thereby generate a first holding current required for opening the injector and a second holding current required for retaining the opened state of the injector, the second holding current being lower in intensity than the first holding current.
摘要:
To provide an apparatus that may impart a complicated bend deformation to an object to be machined such as a ceramic bar elongated in one direction or the like, and may reduce the non-uniformity in machining amount of the object to be machined upon the machining work of the object to be machined, specifically a correcting mechanism for deforming the object to be machined together with a jig holding the object to be machined is provided in a machining apparatus. The correcting mechanism includes a base, a plurality of levers provided at first ends with pins, a shaft fixed to the base for rotatably supporting the levers, and a plurality of correcting drive means coupled to second ends of said levers for pivoting the levers to the shaft to thereby pivoting the pins. The jig includes a plurality of load receiving portions arranged in a holding portion elongated on one direction for holding the object to be machined whereby portions corresponding to the load receiving portion in the holding portion are deformed together with the object to be machined in accordance with pivoting of each pin.
摘要:
A p-type oxide thermoelectric material which has a high output factor and a low environmental load. The thermoelectric material is composed of an oxide represented by the compositional formula (Ni1-xCux) (Mn2-yCuy)O4 and having a structure in which Ni elements occupying the Ni sites and/or Mn elements occupying the Mn sites are partially replaced by Cu elements, wherein 0≦x≦0.7, 0≦y≦0.7, and 0.4≦x+y. In such a thermoelectric material, preferably, 0.2≦x≦0.5 and 0.2≦y≦0.5, and preferably, the output factor at 50° C. to 800° C. is 10×10−6 W/mK2 or more.
摘要翻译:具有高输出因数和低环境负荷的p型氧化物热电材料。 热电材料由组成式(Ni1-xCux)(Mn2-yCuy)O4表示的氧化物构成,并且具有占据Mn位置的Ni元素和/或Mn元素的Mn元素部分被Cu取代的结构 元素,其中0 <= x <= 0.7,0 <= y <= 0.7和0.4 <= x + y。 在这种热电材料中,优选为0.2≤x≤0.5且0.2≤y≤0.5,优选50℃〜800℃的输出系数为10×10 -6 W / m·K以上。
摘要:
An electronic circuit device comprises: a printed circuit board mounted with electronic components; a resin-molded portion formed of resin so disposed that the electronic components are covered therewith; a convex connector that has metal terminals for connection and is exposed from the resin-molded portion; and a sealing member wrapped around the resin-molded portion.
摘要:
According to the present invention, the operation of a diagnostic circuit within a load drive circuit, which has been built into an electronic control device, is checked without modifying the electronic control device or the like. The load drive circuit, which drives a load such as a solenoid using a DC power supply as a power supply, includes a drive circuit and a diagnostic circuit which is independently provided within the drive circuit. Upon input of a drive-stop signal from a control circuit that controls the drive circuit, the operation of at least the drive circuit stops, so that whether the diagnostic circuit, which diagnoses the condition of the load, is normally operating or not is checked in a condition in which the load drive circuit has been built into the electronic control device.
摘要:
An engine control circuit device which has higher heat resistance and can be installed in a place exposed to severe thermal environments. In an engine control circuit device comprising a circuit board on which a plurality of packaged electronic parts are mounted, and a connector mounted on the circuit board for connection to an external circuit, the device further comprises a resin portion formed of a thermo-setting resin and covering the connector except for a connecting portion thereof and the circuit board, and a cooling pipe integrally molded in the resin portion and allowing a coolant to flow through it, thereby cooling the resin portion.
摘要:
A processing jig comprises: a main body to be fixed to a processing apparatus; a retainer that is long in one direction for retaining a bar as an object long in one direction; four couplers for coupling the retainer to the main body; three load application sections, coupled to the retainer, to each of which a load is applied for deforming the retainer; and three arms for coupling the load application sections to the retainer. The retainer has a beam structure that is bent with an application of external force. A bar fixing section to which the bar is fixed is provided at a lower end of the retainer. Both ends of the retainer are not coupled to the main body but left open.