Quasi-resonant PWM inverter
    1.
    发明授权
    Quasi-resonant PWM inverter 失效
    准谐振PWM逆变器

    公开(公告)号:US5572418A

    公开(公告)日:1996-11-05

    申请号:US294398

    申请日:1994-08-23

    IPC分类号: H02M7/48 H02M7/487 H02M3/24

    摘要: A quasi-resonant PWM inverter performs stable resonant operation utilizing a simple control system and a highly efficient inverter operation. A first condenser is connected between a connecting point between first and second main switches and to the first side of the first main switch. A second condenser is connected between the connecting point and the second side of the second main switch. The respective first and second sides of the first main switch and second main switch are connected to a DC power source having a first dividing point for the first potential and a second dividing point for the second potential. A terminal of a first auxiliary switch is connected to the first dividing point; and a terminal of a second auxiliary switch is connected to the second dividing point. A reactor is connected between the connecting points of the first and second auxiliary switches and the first and second main switches.

    摘要翻译: 准谐振PWM逆变器利用简单的控制系统和高效率的逆变器操作来执行稳定的谐振操作。 第一冷凝器连接在第一和第二主开关之间的连接点和第一主开关的第一侧之间。 第二冷凝器连接在第二主开关的连接点和第二侧之间。 第一主开关和第二主开关的相应的第一和第二侧连接到具有用于第一电位的第一分割点和用于第二电位的第二分割点的DC电源。 第一辅助开关的端子连接到第一分割点; 并且第二辅助开关的端子连接到第二分割点。 反应器连接在第一和第二辅助开关的连接点与第一和第二主开关之间。

    Direct current power unit having main and secondary direct current power
supplies
    2.
    发明授权
    Direct current power unit having main and secondary direct current power supplies 失效
    直流电源单元具有主和二次直流电源

    公开(公告)号:US5420497A

    公开(公告)日:1995-05-30

    申请号:US217935

    申请日:1994-03-25

    摘要: A direct current power unit has main and secondary direct current power supplies, a serial circuit, and first and second parallel circuits. One terminal of the secondary direct current power is connected to one terminal of the main direct current power supply. The serial circuit consists of a choke coil and a first capacitor, of which each terminal is connected to each terminal of the main direct current power supply. The first parallel circuit consists of a first diode and a first switching element, of which each terminal is connected to each terminal of the first capacitor. The second parallel circuit consists of a second capacitor, a second diode, and a second switching element connected between the serial connected point of the choke coil and the first capacitor and the other terminal of the secondary direct current power supply. Each terminal of a third capacitor is connected to each terminal of the secondary direct current power supply. Direct current power is supplied to a load from each terminal of the first capacitor.

    摘要翻译: 直流电源单元具有主和次级直流电源,串联电路以及第一和第二并联电路。 二次直流电源的一个端子连接到主直流电源的一个端子。 串联电路由扼流线圈和第一电容器构成,其中每个端子连接到主直流电源的每个端子。 第一并联电路由第一二极管和第一开关元件组成,其中每个端子连接到第一电容器的每个端子。 第二并联电路包括连接在扼流线圈的串联连接点与第一电容器和次级直流电源的另一端子之间的第二电容器,第二二极管和第二开关元件。 第三电容器的每个端子连接到次级直流电源的每个端子。 从第一电容器的每个端子向负载提供直流电力。

    Life indicator and cartridge for indicating total water flow
    4.
    发明授权
    Life indicator and cartridge for indicating total water flow 失效
    用于指示总水流量的寿命指示器和墨盒

    公开(公告)号:US5458766A

    公开(公告)日:1995-10-17

    申请号:US117757

    申请日:1993-09-08

    CPC分类号: B01D35/143 C02F2209/445

    摘要: A life indicator is so designed that an electric current flows to a light emitting diode utilizing a battery as a power source when two electrodes are electrically connected. The two electrodes are so installed as to be electrically connected by passing water through a water passage communicating with an objective equipment, and the discharge life of the battery is set equal to the service life of the equipment.

    摘要翻译: 寿命指示器被设计成当两个电极电连接时,利用电池作为电源,电流流向发光二极管。 这两个电极被安装成通过与目标设备连通的水路通过水电连接,并且将电池的放电寿命设定为等于设备的使用寿命。

    Sulfuric acid concentration sensor for lead storage battery
    5.
    发明授权
    Sulfuric acid concentration sensor for lead storage battery 失效
    铅酸蓄电池硫酸浓度传感器

    公开(公告)号:US5485744A

    公开(公告)日:1996-01-23

    申请号:US204418

    申请日:1994-03-15

    IPC分类号: G01N9/00 G01N29/036 H01M10/48

    摘要: A sulfuric acid concentration sensor for a lead storage battery comprising a quartz resonator changing its characteristic frequency in a manner of single-valued function according to the change of sulfuric acid concentration and an oscillation circuit (20) oscillating the quartz resonator, the quartz resonator is immersed in an electrolyte (6) so as to be oscillated, and a characteristic frequency of the quartz resonator at this moment is obtained so as to determine the sulfuric acid concentration. The sensor of this invention is compact in its size, simple in its structure and cheap in its cost, so that it can be applied to a lead storage battery for automobile.

    摘要翻译: PCT No.PCT / JP92 / 01178 Sec。 371日期1994年3月15日 102(e)1994年3月15日PCT 1992年9月16日PCT公布。 出版物WO93 / 06452 日本1994年4月1日。一种铅蓄电池用硫酸浓度传感器,其特征在于,包括石英谐振器,根据硫酸浓度的变化以单值功能的方式改变其特性频率,振荡电路(20) 石英谐振器,将石英谐振器浸入电解质(6)中振荡,此时获得石英谐振器的特征频率,从而确定硫酸浓度。 本发明的传感器尺寸紧凑,结构简单,成本便宜,可应用于汽车用铅蓄电池。

    Compressive and electro-osmotic dehydrator
    6.
    发明授权
    Compressive and electro-osmotic dehydrator 失效
    压缩和电渗脱水机

    公开(公告)号:US5034111A

    公开(公告)日:1991-07-23

    申请号:US457379

    申请日:1989-12-27

    摘要: A dehydrator comprising a filter press including a pair of first and second, electrically insulating press plates supported in parallel on a frame and adapted to be moved relative to each other. Each of the press plates has a wide recess, the recesses forming a closed space between them when they engage. A pair of filter cloths for enclosing feed liquid are provided between the plates. An electricaly insulating diaphragm is fixed at its margin to the first press plate, covers the associated recess, and is adapted to swell outwardly with compressed fluid collected between the diaphragm and the first plate. A metal core plate is embedded within the diaphragm to reinforce it except for its marginal portion, and the core plate is connected to one of the positive and negative poles of an electric DC power source. Electric conductors are fixed in electric connection to the core plate, and project outwardly through the diaphragm. Divided flush carbon electrode plates are fixed in electric connection to the conductors over the diaphragm and core plate. Another electrode plate is supported in the recess of the second press plate in parallel with the divided electrode plates, and connected to the other electric pole.

    Apparatus for separating spherical from non-spherical particles
    7.
    发明授权
    Apparatus for separating spherical from non-spherical particles 失效
    用于将球形与非球形颗粒分离的装置

    公开(公告)号:US4839033A

    公开(公告)日:1989-06-13

    申请号:US198498

    申请日:1988-05-25

    IPC分类号: B07B13/00

    摘要: An apparatus for separating particles in accordance with the sphericity of the particles is disclosed. The apparatus includes a housing which is supplied with air having a desired humidity, and which accommodates therein a cylindrical rotor with a horizontal shaft. The particles are charged into the housing from a hopper above the rotor, and tend to adhere onto the peripheral surface of the rotor with adhesive force which is dependent on the sphericity of each particle. The rotor is placed into a slow rotation and subjected to vibration whereby non-spherical particles and spherical particles are collected in respective receptacles arranged on both sides of the rotor shaft.

    摘要翻译: 公开了一种根据颗粒的球形度分离颗粒的装置。 该装置包括一个壳体,该壳体被供应有具有所需湿度的空气,并且在其中容纳有具有水平轴的圆柱形转子。 颗粒从转子上方的料斗装入壳体中,并且倾向于以取决于每个颗粒的球形度的粘合力粘附到转子的圆周表面上。 转子被放置成缓慢的旋转并经受振动,由此非球形颗粒和球形颗粒被收集在设置在转子轴的两侧的相应的容器中。

    Life indicator and lead-acid storage battery with life indicator
    8.
    发明授权
    Life indicator and lead-acid storage battery with life indicator 失效
    寿命指示器和铅酸蓄电池,带寿命指示器

    公开(公告)号:US5750285A

    公开(公告)日:1998-05-12

    申请号:US518333

    申请日:1995-08-23

    IPC分类号: H01M10/48

    CPC分类号: H01M10/48

    摘要: The purpose of this invention is to provide a life indicator which can detect an occurrence of growth and obtain various information based on it. A life indicator of this invention having at least a sensor portion, a sending circuit, a receiving circuit and a light emitting diode. The sensor portion is adapted to be applied with a pressure based on an elongation of a positive plate directly or indirectly, so as to detect the applied pressure as a change of electric parameter.

    摘要翻译: 本发明的目的是提供一种能够检测生长发生并基于此获得各种信息的寿命指示器。 本发明的寿命指示器至少具有传感器部分,发送电路,接收电路和发光二极管。 传感器部分适于直接或间接地施加基于正极板的伸长的压力,以便检测施加的压力作为电参数的变化。

    Sulfuric acid concentration sensor and lead acid battery equipped with
sulfuric acid concentration sensor
    10.
    发明授权
    Sulfuric acid concentration sensor and lead acid battery equipped with sulfuric acid concentration sensor 失效
    硫酸浓度传感器和铅酸蓄电池配备硫酸浓度传感器

    公开(公告)号:US5273841A

    公开(公告)日:1993-12-28

    申请号:US904324

    申请日:1992-06-25

    IPC分类号: G01N27/12 H01M10/48 G01N27/02

    CPC分类号: G01N27/126

    摘要: A sulfuric acid concentration sensor including a sensor body comprising a high molecular compound having a property to react with sulfuric acid and a property to change an electric conductivity in such a way as one-valued function with a change in sulfuric acid concentration, in which an electric current is flown through the sensor body impregnated in sulfuric acid solution to obtain the electric conductivity of sensor body so as to know the sulfuric acid concentration. Since the electric conductivity of high molecular compound changes corresponding to the sulfuric acid concentration, the sulfuric acid concentration can be known when the electric conductivity of the sensor body i.e. the high molecular compound is obtained, so that the concentration of sulfuric acid can be measured easily.

    摘要翻译: 一种硫酸浓度传感器,其包括具有与硫酸反应的性质的高分子化合物的传感器本体,并且具有随着硫酸浓度变化的一价函数而改变电导率的性质,其中, 电流通过浸渍在硫酸溶液中的传感器体流动,以获得传感器体的电导率,以便了解硫酸浓度。 由于高分子化合物的电导率随着硫酸浓度的变化而变化,所以当获得传感器体的电导率(即高分子化合物)时,硫酸浓度可以被知道,从而可以容易地测量硫酸的浓度 。