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    Electrostatic transducer
    11.
    发明授权
    Electrostatic transducer 失效
    静电传感器

    公开(公告)号：US3859477A

    公开(公告)日：1975-01-07

    申请号：US38049773

    申请日：1973-07-18

    Applicant: TESLA NP

    Inventor： SKVOR ZDENEK

    IPC: H04R19/02 ,  H04R19/00

    CPC classification number: H04R19/02

    Abstract: An electrostatic transducer of the condenser type used as a loudspeaker and/or microphone comprising an assembly of at least one fixed electrode, a diaphragm and a spacer arranged therebetween. The assembly is spirally wound about a central core into a substantially cylindrical shape. The acoustic input/output thereof being situated at at least one of the frontal ends of the cylinder.

    Abstract translation: 用作扬声器和/或麦克风的聚光器类型的静电换能器包括至少一个固定电极，隔膜和间隔件的组件。 组件围绕中心芯螺旋缠绕成大致圆柱形。 其声输入/输出位于气缸的前端中的至少一个上。

    Indexing core holder for a toroidal winding machine
    12.
    发明授权
    Indexing core holder for a toroidal winding machine 失效
    索引用于电动卷绕机的芯支架

    公开(公告)号：US3618868A

    公开(公告)日：1971-11-09

    申请号：US3618868D

    申请日：1970-03-27

    Applicant: TESLA NP

    Inventor： VAVRINEC BOHUSLAV

    IPC: H01F41/08

    CPC classification number: H01F41/08 ,  Y10T74/1555

    Abstract: Small rectangular toroidal cores are held for winding by a pair of clamping jaws mounted on a slide to be indexed for precise placement of the winding by a reversible, step-by-step transmission. The transmission includes a driven cam acting through a stepping pawl and ratchet means to drive associated gearing terminating in a rack carried by the slide. The direction of indexing is reversed by a shiftable, two-way bevel clutch in said gearing. The clutch is controlled by adjustable switchactuating means carried by the slide and operably connected to clutch-operating means.

    Electrostatic horn loudspeaker
    13.
    发明授权
    Electrostatic horn loudspeaker 失效
    静电喇叭扬声器

    公开(公告)号：US3590169A

    公开(公告)日：1971-06-29

    申请号：US72210768

    申请日：1968-04-17

    Applicant: TESLA NP

    Inventor： MERHAUT JOSEF

    IPC: H04R1/30 ,  H04R19/02

    CPC classification number: H04R1/30 ,  H04R19/02

    Abstract: An electrostatic pressure loudspeaker with a diaphragm vibrating at the rhythm of a signal frequency actuated by electrostatic forces operating between the diaphragm and at least one back electrode. At least one side of the diaphragm is connected with a horn through the input cross section of the latter which is smaller than the active area of the diaphragm, the ratio being 1 : 5 to 1 : 15. The cross section of the horn increases gradually from the input side facing the diaphragm to the output side in accordance with a predetermined law. The back electrode is provided with openings forming the input part of the horn. The input part of the horn connected directly with the diaphragm and the back electrode has a constant cross section.

    Circuit arrangement for adding two signals in exact mutual phase position
    20.
    发明授权
    Circuit arrangement for adding two signals in exact mutual phase position 失效
    用于在精确相位位置添加两个信号的电路设置

    公开(公告)号：US3681648A

    公开(公告)日：1972-08-01

    申请号：US3681648D

    申请日：1969-06-12

    Applicant: TESLA NP

    Inventor： MACK ZDENEK

    IPC: H04H1/00 ,  H04H20/48 ,  H01J29/70

    CPC classification number: H04H20/48

    Abstract: A first signal is supplied to a first resonance amplifier and the second harmonic of the first signal is supplied to a second resonance amplifier. The first resonance amplifier is coupled to the vertical deflection plate system of a cathode ray oscilloscope and to an input of a summing device. The second resonance amplifier is coupled to the horizontal deflection plate system of the oscilloscope and to another input of the summing device.

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