Digital interface cable
    2.
    发明授权
    Digital interface cable 失效
    数字接口电缆

    公开(公告)号:US5412356A

    公开(公告)日:1995-05-02

    申请号:US966313

    申请日:1992-10-26

    IPC分类号: H03H7/30 H04B3/00 H03H7/00

    CPC分类号: H04B3/00 H03H7/30

    摘要: A single-ended digital interface cable and a balanced digital interface cable having a source end and a load end for propagating audio frequency signals in a digital format is disclosed. Each of the cables comprises a fixed capacitor or a capacitor and switch network which is coupled at or near the load end of the cables for providing a fixed bandwidth or for use in selectively controlling the bandwidth of the cables and a series resistance at each end thereof to dampen ringing.

    摘要翻译: 公开了一种单端数字接口电缆和平衡数字接口电缆,其具有用于以数字格式传播音频信号的源端和负载端。 每个电缆包括固定电容器或电容器和开关网络,其耦合在电缆的负载端处或附近,以提供固定带宽或用于选择性地控制电缆的带宽和其每个端部的串联电阻 阻止振铃。

    Universal connector
    3.
    发明授权
    Universal connector 失效
    通用连接器

    公开(公告)号:US5791919A

    公开(公告)日:1998-08-11

    申请号:US640084

    申请日:1996-04-30

    摘要: An electrical connector is set forth which is suitable for connection to a conductor which includes a connector member suitable for attachment, for example by soldering or by a crimping device, to a conductor, such as a cable. The electrical connector also includes a terminal pin connectable to an electrical receptor or terminal, for example in a part of an audio system. The connector member also includes a threaded part onto which any one of several types of alternative connector units may be mounted to enable use of the same conductor and its attached connector with different types of audio system receptors or terminals. A right-angle adapter may also be used to join the electrical connector to one of the alternative connector units.

    摘要翻译: 提出了一种电连接器,其适于连接到导体,该导体包括适于例如通过焊接或通过压接装置连接到诸如电缆的导体的连接器构件。 电连接器还包括可连接到电接收器或终端的端子引脚,例如在音频系统的一部分中。 连接器构件还包括螺纹部件,几个类型的替代连接器单元中的任何一个可以安装在螺纹部分上,以使得能够使用不同类型的音频系统接收器或终端的相同导体及其连接的连接器。 也可以使用直角适配器将电连接器连接到替代连接器单元之一。

    Critically damped capacitor and method of making same
    4.
    发明授权
    Critically damped capacitor and method of making same 失效
    绝缘阻尼电容器及其制作方法

    公开(公告)号:US5144522A

    公开(公告)日:1992-09-01

    申请号:US689168

    申请日:1991-04-22

    申请人: Richard N. Marsh

    发明人: Richard N. Marsh

    IPC分类号: H01G4/40 H01G4/00 H01G7/00

    CPC分类号: H01G4/40 Y10T29/435

    摘要: A critically damped capacitor comprising a capacitance C having in series therewith a parasitic inductance L.sub.S, a parasitic resistance R.sub.S and an additional resistance R.sub.A in series with the plates of the capacitor. The value of R.sub.A is chosen such that ##EQU1## The additional resistance R.sub.A in one embodiment is provided by a layer of conductive epoxy which is attached or added to one or both of the end plates of the capacitor. Electrical leads are coupled to the end plate having the epoxy by being embedded in the epoxy. If epoxy is not used on an end plate, the lead is coupled to the end plate in a conventional manner. In another embodiment the additional resistance R.sub.A is provided by a discrete resistor which is welded, soldered or otherwise attached to one or both of the end plates. If only one resistor is used, one lead of the capacitor is coupled to its end plate in a conventional manner and the second lead is coupled to the free end of the resistor. In one embodiment, the resistor is enclosed and the ends of the capacitor sealed by a non-electrically conductive epoxy. In another embodiment, the capacitor and resistor are enclosed within a container filled with non-conductive epoxy and the leads of the capacitor extend externally therefrom in a conventional manner so as to form an integrated capacitive element or device.

    AC line filter network for video applications
    5.
    发明授权
    AC line filter network for video applications 失效
    交流线路滤波网络用于视频应用

    公开(公告)号:US5920468A

    公开(公告)日:1999-07-06

    申请号:US921349

    申请日:1997-08-29

    IPC分类号: H02J3/01 H02M1/12

    CPC分类号: H02J3/01 Y02E40/40

    摘要: A filter network adapted to be placed in parallel with a power supply which acts like a short circuit at a specified frequency range above 80 kHz. The filter network comprises a plurality of parallel circuits, each of which comprise a capacitor, an inductor and a resistor in series with a second resistor coupled in parallel with the inductor.

    摘要翻译: 滤波器网络适于与在80kHz以上的指定频率范围内类似于短路的电源并联放置。 滤波器网络包括多个并联电路,每个并联电路包括电容器,电感器和与与电感器并联耦合的第二电阻器串联的电阻器。

    A-C power line filter
    6.
    发明授权
    A-C power line filter 失效
    A-C电源线滤波器

    公开(公告)号:US5260862A

    公开(公告)日:1993-11-09

    申请号:US665325

    申请日:1991-03-06

    申请人: Richard N. Marsh

    发明人: Richard N. Marsh

    IPC分类号: H02J3/18 H02M1/12 H03H7/00

    摘要: A filter network adapted to be placed in parallel with a power supply which provides a high impedance to the 60 Hz utility frequency but acts like a short circuit to all higher frequencies. The network comprises a plurality of parallel circuits, each of which comprise a capacitor, an inductor and a resistor in series with a second resistor coupled in parallel with the inductor. Signal levels above 60 Hz in a prototype circuit using seven such parallel circuits with a parallel capacitor coupled thereto shows that above 60 Hz the signal from the power supply is attenuated by 25-30 dB at 1 KHz and that the impedance is substantially resistive beyond 1 KHz.

    摘要翻译: 滤波器网络适于与电源并联放置,该电源对60Hz的使用频率提供高阻抗,但是像所有较高频率的短路一样。 网络包括多个并联电路,每个并联电路包括与电感器并联耦合的第二电阻器串联的电容器,电感器和电阻器。 使用七个这样的并联电容耦合到其上的并联电路的原型电路中的信号电平高于60Hz表明,在60Hz以上,来自电源的信号在1KHz被衰减25-30dB,并且阻抗基本上是阻抗超过1 千赫。

    Filter and power factor compensation network
    7.
    发明授权
    Filter and power factor compensation network 失效
    滤波器和功率因数补偿网络

    公开(公告)号:US5227962A

    公开(公告)日:1993-07-13

    申请号:US885312

    申请日:1992-05-18

    申请人: Richard N. Marsh

    发明人: Richard N. Marsh

    IPC分类号: H02J3/18 H02M1/12

    CPC分类号: H02J3/1864 H02M1/12 Y02E40/12

    摘要: A filter network adapted to be placed in parallel with a power supply which provides a high impedance to the 60 Hz utility frequency but acts like a short circuit to all higher frequencies. The network comprises a plurality of parallel circuits, each of which comprise a capacitor, an inductor and a resistor in series with a second resistor coupled in parallel with the inductor. Signal levels above 60 Hz in a prototype circuit using seven such parallel circuits with a parallel capacitor coupled thereto shows that above 60 Hz the signal from the power supply is attenuated by 25-30 dB at 1 KHz and that the impedance is substantially resistive beyond 1 KHz. To maximize the power factor of the circuit comprising the network and consequently the dynamic range of audio equipment coupled thereto, the magnitude of the total capacitance of the network is chosen to be as close as possible to the magnitude of the input inductance of the audio equipment. Switches are provided for selectively adjusting the number of parallel circuits in the network to change its frequency response as well as to accommodate loads having different input inductive reactance at 60 Hz.

    摘要翻译: 滤波器网络适于与电源并联放置,该电源对60Hz的使用频率提供高阻抗,但是像所有较高频率的短路一样。 网络包括多个并联电路,每个并联电路包括与电感器并联耦合的第二电阻器串联的电容器,电感器和电阻器。 使用七个这样的并联电容耦合到其上的并联电路的原型电路中的信号电平高于60Hz表明,在60Hz以上的情况下,来自电源的信号在1KHz被衰减25-30dB,阻抗基本上是电阻超过1 千赫。 为了最大化包括网络的电路的功率因数,并因此使耦合到其的音频设备的动态范围最大化,网络的总电容的大小被选择为尽可能接近音频设备的输入电感的幅度 。 提供开关用于选择性地调节网络中的并联电路的数量以改变其频率响应,以及适应具有60Hz的不同输入感抗的负载。