Current restriction element responsive to applied voltage
    3.
    发明授权
    Current restriction element responsive to applied voltage 失效
    响应于施加的电压的电流限制元件

    公开(公告)号:US4484251A

    公开(公告)日:1984-11-20

    申请号:US425076

    申请日:1982-09-20

    CPC分类号: H01G7/06 H01C7/115

    摘要: A current restriction device for alternate circuit with small size, low producing cost and low power loss has been found by using a ferro-electric body with rectangular hysterisis characteristics. Said device is used for instance as a ballast for restricting current in a fluorescent lamp. Said ferro-electric body has main component of B.sub.a T.sub.i O.sub.3, additive of S.sub.r or P.sub.b for substitution of part of B.sub.a and Z.sub.n or S.sub.n for substitution of part of T.sub.i, and a mineralizer of M.sub.n o or C.sub.r2 O.sub.3. The voltage-current characteristics of said ferro-electric body show non-linearity that the impedance ratio (Z.sub.2 /Z.sub.1) of the impedance Z.sub.2 measured with alternate field of 500 volts/mm to the impedance Z.sub.1 measured with alternate field of 5 volts/mm is less than 1/10.

    摘要翻译: PCT No.PCT / JP82 / 00047 Sec。 371日期1982年9月20日 102(e)1982年9月20日PCT提交1982年2月20日PCT公布。 出版物WO83 / 0302800 日期:1983年9月1日。通过使用具有矩形滞后特性的铁电体,发现了具有体积小,生产成本低,功率损耗小的交流电路限流装置。 所述装置例如用作限制荧光灯中的电流的镇流器。 所述铁电体具有BaTiO3的主要成分,Sr或Pb的添加剂,用于取代一部分Ba和Zn或Sn以取代部分Ti,以及MnO或Cr2O3的矿化剂。 所述铁电体的电压 - 电流特性显示出以500伏/毫米的交变场测量的阻抗Z2的阻抗比(Z2 / Z1)与以5伏/毫米的交变场测量的阻抗Z1的阻抗比(Z2 / Z1)非线性 小于1/10。

    Tobacco drying machine
    4.
    发明授权
    Tobacco drying machine 失效
    烟草烘干机

    公开(公告)号:US4578878A

    公开(公告)日:1986-04-01

    申请号:US671848

    申请日:1984-11-15

    IPC分类号: A24B1/02 A24B3/04 F26B21/08

    CPC分类号: A24B3/04

    摘要: A tobacco drying machine of rotary cylindrical type having a steam pipe at the wall thereof and a heated air source at the lower side of a material supply inlet, comprises means for detecting the flow of tobacco raw material at a pretreatment process line of the drying machine; a water spraying nozzle at the raw material supply inlet into which pressurized air is supplied as a carrier; and a control circuit for providing a signal to the water spraying nozzle when a predetermined period of time has passed since said circuit received a signal representative of the passage of the front or rear end of the tobacco raw material through the detector.

    摘要翻译: 一种在其壁上具有蒸汽管的旋转圆筒型烟草干燥机和在供料口下侧的加热空气源,包括用于检测在烘干机的预处理生产线上的烟草原料的流动的装置 ; 在供给加压空气的原料供给口的喷水喷嘴作为载体; 以及控制电路,用于在经过预定时间段之后向喷水嘴提供信号,因为该电路接收到表示烟草原料的前端或后端通过检测器的信号。