DC power supply circuit
    1.
    发明授权
    DC power supply circuit 失效
    直流电源电路

    公开(公告)号:US5576580A

    公开(公告)日:1996-11-19

    申请号:US358764

    申请日:1994-12-19

    摘要: A dc power supply circuit connects a plurality of dc circuit breakers to a semi-conductor converter, returning again to the semi-conductor converter through a dc driving part such as an electric railcar connected to each dc circuit breaker. A second dc circuit breaker of larger capacity than the above-mentioned dc circuit breakers is provided in a return circuit and opened when a short circuit current is detected. A current decreasing means opens the second dc circuit breaker to decrease the short circuit current and includes, for example, a series-circuit of a resistor R and a reactor L. The dc power supply circuit has a large interruption capacity with low resistance loss.

    摘要翻译: 直流电源电路将多个直流断路器连接到半导体转换器,通过连接到每个直流断路器的电气轨道直流驱动部分再次返回到半导体转换器。 在回路中提供具有比上述直流断路器容量大的第二直流断路器,并在检测到短路电流时断开。 电流减小装置打开第二直流断路器以减小短路电流,并且包括例如电阻器R和电抗器L的串联电路。直流电源电路具有大的中断容量并具有低电阻损耗。

    CIRCUIT BREAKER AND OPENING AND CLOSING METHOD THEREOF
    2.
    发明申请
    CIRCUIT BREAKER AND OPENING AND CLOSING METHOD THEREOF 有权
    断路器及其开路及闭合方法

    公开(公告)号:US20080156775A1

    公开(公告)日:2008-07-03

    申请号:US11961607

    申请日:2007-12-20

    IPC分类号: H01H33/66

    CPC分类号: H01H33/6662 H01H33/596

    摘要: A circuit breaker comprising a vacuum valve; an electromagnet including a first coil for driving an operating shaft of the vacuum valve toward an opening direction by electromagnetic repulsion, a movable core and a permanent magnet; and an operating mechanism which excites the first coil to close the vacuum valve, holds the vacuum valve closed by an attractive force of the permanent magnet and excites the first coil in a direction reverse to an excitation direction in closing operation to open the vacuum valve. In the circuit breaker, together with the first coil, a second coil which is excited simultaneously with an electromagnetic repulsion coil for electromagnetic repulsion in quick opening operation by electromagnetic repulsion is provided in the electromagnet.

    摘要翻译: 一种包括真空阀的断路器; 电磁体,包括用于通过电磁排斥驱动真空阀的操作轴朝向打开方向驱动的第一线圈,可动芯和永磁体; 以及激励第一线圈关闭真空阀的操作机构,通过永久磁铁的吸引力使真空阀保持关闭,并且在关闭操作中沿与激励方向相反的方向激励第一线圈以打开真空阀。 在断路器中,与第一线圈一起,在电磁体中设置有与通过电磁排斥的快速打开操作中的用于电磁排斥的电磁排斥线圈同时激励的第二线圈。

    Aqueous epoxy resin paint composition
    4.
    发明授权
    Aqueous epoxy resin paint composition 失效
    水性环氧树脂漆组合物

    公开(公告)号:US4104223A

    公开(公告)日:1978-08-01

    申请号:US666452

    申请日:1976-03-12

    摘要: An aqueous epoxy resin paint composition comprising an epoxy resin emulsion formed by emulsifying a bisphenol type epoxy resin or a mixture of a bisphenol type epoxy resing with an epoxy resin havng a compatibility with said bisphenol type epoxy resin and structure similar to that of said bisphenol type epoxy resin but being quite different therefrom in a part of the structure in water with a polyoxyethylene benzylated phenyl ether having an HLB value of at least 15, and a curing agent and, if desired, a pigment and other additives.

    摘要翻译: 一种水性环氧树脂涂料组合物,其包含通过乳化双酚型环氧树脂或双酚型环氧树脂与环氧树脂的混合物形成的环氧树脂乳液,与环氧树脂相容性与所述双酚型环氧树脂相容,并且与所述双酚型 环氧树脂,但是在一部分水结构中,与HLB值至少为15的聚氧乙烯苄基化苯基醚,以及固化剂,如果需要,还有颜料和其它添加剂,这些环氧树脂是完全不同的。

    Analog switch circuit for wide frequency band
    5.
    发明授权
    Analog switch circuit for wide frequency band 有权
    模拟开关电路用于宽频带

    公开(公告)号:US08076966B2

    公开(公告)日:2011-12-13

    申请号:US12710543

    申请日:2010-02-23

    IPC分类号: H03K17/16

    摘要: An analog switch circuit that includes a first field-effect transistor, a source of which is coupled to a first switch terminal, and a drain of which is coupled to a second switch terminal; a first capacitance storing electric charge; a second capacitance storing electric charge; a first switch circuit that couples the first capacitance between a direct current voltage node and a reference potential node; a second switch circuit that couples the first capacitance and the second capacitance in parallel; and a third switch circuit that couples the second capacitance between a gate and the source of the first field-effect transistor.

    摘要翻译: 一种模拟开关电路,其包括第一场效应晶体管,其源极耦合到第一开关端子,其漏极耦合到第二开关端子; 存储电荷的第一电容; 存储电荷的第二电容; 第一开关电路,其将直流电压节点和参考电位节点之间的第一电容耦合; 第二开关电路,并联第一电容和第二电容; 以及第三开关电路,其将第二电容耦合在第一场效应晶体管的栅极和源极之间。

    ANALOG SWITCH CIRCUIT
    6.
    发明申请
    ANALOG SWITCH CIRCUIT 有权
    模拟开关电路

    公开(公告)号:US20100214004A1

    公开(公告)日:2010-08-26

    申请号:US12710543

    申请日:2010-02-23

    IPC分类号: H03K17/687

    摘要: An analog switch circuit that includes a first field-effect transistor, a source of which is coupled to a first switch terminal, and a drain of which is coupled to a second switch terminal; a first capacitance storing electric charge; a second capacitance storing electric charge; a first switch circuit that couples the first capacitance between a direct current voltage node and a reference potential node; a second switch circuit that couples the first capacitance and the second capacitance in parallel; and a third switch circuit that couples the second capacitance between a gate and the source of the first field-effect transistor.

    摘要翻译: 一种模拟开关电路,其包括第一场效应晶体管,其源极耦合到第一开关端子,其漏极耦合到第二开关端子; 存储电荷的第一电容; 存储电荷的第二电容; 第一开关电路,其将直流电压节点和参考电位节点之间的第一电容耦合; 第二开关电路,并联第一电容和第二电容; 以及第三开关电路,其将第二电容耦合在第一场效应晶体管的栅极和源极之间。

    Rust preventing coating composition
    7.
    发明授权
    Rust preventing coating composition 失效
    防锈涂料组合物

    公开(公告)号:US4040842A

    公开(公告)日:1977-08-09

    申请号:US734596

    申请日:1976-10-21

    IPC分类号: C09D1/02 C09D5/08 C09D5/10

    CPC分类号: C09D5/08 C09D1/02

    摘要: A rust preventive coating composition having a long pot life and providing a coating in which generation of white rust is greatly reduced, said coating composition being obtained by incorporating a small amount of at least one salt selected from the group consisting of molybdate salts, tungstate salts, phosphomolybdate salts and phosphotungstate salts into a coating composition comprising as main components an alkali metal silicate or ammonium silicate and zinc powder.

    摘要翻译: 一种防腐涂料组合物,其使用寿命长并且提供了大大降低白锈产生的涂层,所述涂料组合物是通过加入少量选自钼酸盐,钨酸盐的至少一种盐 ,磷钼酸盐和磷钨酸盐形成包含作为主要组分的碱金属硅酸盐或硅酸铵和锌粉末的涂料组合物。

    Aqueous epoxy resin paint composition
    10.
    发明授权
    Aqueous epoxy resin paint composition 失效
    水性环氧树脂漆组合物

    公开(公告)号:US3983056A

    公开(公告)日:1976-09-28

    申请号:US509315

    申请日:1974-09-25

    摘要: An aqueous epoxy resin paint composition comprising an epoxy resin emulsion formed by emulsifying a bisphenol type epoxy resin or a mixture of a bisphenol type epoxy resin with an epoxy resin having a compatibility with said bisphenol type epoxy resin and a structure similar to that of said bisphenol type epoxy resin but being quite different therefrom in a part of the structure in water with a polyoxyethylene benzylated phenyl ether having an HLB value of at least 15, and a curing agent and, if desired, a pigment and other additives.

    摘要翻译: 一种水性环氧树脂漆组合物,其包含通过将双酚型环氧树脂或双酚型环氧树脂与具有与所述双酚型环氧树脂具有相容性的环氧树脂的混合物乳化而形成的环氧树脂乳液和类似于所述双酚型环氧树脂的结构 在水的一部分结构中,与HLB值为至少15的聚氧乙烯苄基化苯基醚和固化剂,以及如果需要的话,颜料和其它添加剂在一部分结构中完全不同。