摘要:
A control apparatus for opening/closing a vehicle door includes a door opening/closing mechanism for operating the vehicle door, a driving source for driving the door opening/closing mechanism, a connecting/disconnecting apparatus interposed between the door opening/closing mechanism and the driving source, and a controlling apparatus for controlling the connecting/disconnecting apparatus. The controlling apparatus for opening/closing the vehicle door includes a door movement-detecting apparatus for detecting a movement of the vehicle door. The controlling apparatus switches the connecting/disconnecting apparatus from a connected state to a disconnected state when the driving source is stopped during in an opening/closing operation of the vehicle door. The controlling apparatus performs a repetition mode, in which the connecting/disconnecting apparatus repeats the connected state and the disconnected state, when the movement of the vehicle door is detected in the disconnected state of the connecting/disconnecting apparatus.
摘要:
A control apparatus for opening/closing a vehicle door includes a door opening/closing mechanism for operating the vehicle door, a driving source for driving the door opening/closing mechanism, a connecting/disconnecting apparatus interposed between the door opening/closing mechanism and the driving source, and a controlling apparatus for controlling the connecting/disconnecting apparatus. The controlling apparatus for opening/closing the vehicle door includes a door movement-detecting apparatus for detecting a movement of the vehicle door. The controlling apparatus switches the connecting/disconnecting apparatus from a connected state to a disconnected state when the driving source is stopped during in an opening/closing operation of the vehicle door. The controlling apparatus performs a repetition mode, in which the connecting/disconnecting apparatus repeats the connected state and the disconnected state, when the movement of the vehicle door is detected in the disconnected state of the connecting/disconnecting apparatus.
摘要:
The present invention provides a soldering alloy which does not include harmful Pb or Cd and which has an excellent tensile strength, elongation value, and melting point property. The soldering alloy according to the present invention can thus solve the conventional environmental problems, set the soldering temperature at a low level to thereby restrict the thermal damage to a soldered portion, and prevent breaking of the soldering alloy due to a heat cycle, with an excellent tensile strength and elongation value. A tin-silver-based soldering alloy according to the present invention consist essentially of 3 to 4% by weight of Ag, 2 to 6% by weight of Bi, 2 to 6% by weight of In, and the balance being Sn.
摘要:
A lead-free solder consisting of 1 to 4 wt % of Ag, at least one of Bi and In in respective amounts meeting the conditions that the value of expression (1), A, is equal to or greater than 5.00 and that the value of expression (2), B, is equal to or less than 6.90, and Sn for the balance:A=[Ag wt %]+1.23 [Bi wt %]+0.52 [In wt %] (1)B=[Ag wt %]+1.19 [Bi wt %]+0.50 [In wt %] (2)This solder has a tensile strength and an elongation as high as those of conventional Pb--Sn solder without containing neither lead nor cadmium, which can cause environmental contamination.
摘要:
The present invention provides a lead-free tin-silver-based soldering alloy which has a low melting point equal to alloy H without containing harmful lead, expensive In or the like, and has excellent mechanical characteristics, that is, a tensile strength, an elongation value and heat fatigue characteristic as compared with alloy H, and thus, is applicable to soldering work at a low temperature and can make products which have a high reliability and long useful life or durability. The lead-free tin-silver-based soldering alloy consists essentially of Ag: 2 to 4% by weight, Zn: 0.5 to 2% by weight, Bi: 2 to 6% by weight, and the balance being substantially Sn.
摘要:
Described is a lead-free tin-zinc-based soldering alloy made up of 7 to 9 wt. % of Zn and 0.1 to 0.5 wt. % of Cu or which further contains not more than 3 wt. % of Bi and, in either case, the balance being Sn except for inevitable impurities. The present invention has made it possible to provide a lead-free soldering alloy which has mechanical properties, such as tensile strength and elongation, comparable with those of conventional Pb--Sn soldering alloys without adding thereto lead which causes environmental pollution, has a melting point not higher than 200.degree. C., which is lower than the heat-resistant temperature of an IC package, and has a low cost.
摘要:
A semiconductor device includes a dynamic memory area formed in a semiconductor substrate and set in an inequilibrium potential state, and a plurality of MOS transistors which emit minority carriers or more than a predetermined number into said semiconductor substrate during operation in a saturation region. Each of the MOS transistors is so arranged that a prolonged line extending in a direction from the source region to the drain region may cross the dynamic memory area.
摘要:
A method for element isolation utilizing insulating materials in a semiconductor substrate is proposed. In this method an oxidizable material layer of polycrystalline silicon or the like is formed and then the oxidizable material layer is selectively oxidized, using an oxidation-proof mask thereby forming a thick oxide layer. Thereafter, the oxidation-proof mask is removed and unoxidized oxidizable material below the mask is perpendicularly etched off, leaving part of the oxidizable material which is then oxidized to form together with the thick oxide layer an element isolation. This invention further proposes a semi-conductor device having element isolation layer whose bird's beak is very small in length.