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公开(公告)号：US3696312A
公开(公告)日：1972-10-03
申请号：US3696312D
申请日：1970-06-30
申请人： IBM
摘要： Electric field controllable devices which operate on the principle of velocity change of a wave passing therethrough. These waves can be magneto-elastic or spin waves, including surface waves. The materials used in these devices include Ga2 xFexO3, Cr2O3, and YIG. When the electric field across the device is changed, the cyclotron resonance frequency of the device is greatly shifted, resulting in wave velocity changes up to about 50 percent. A bias magnetic field is generally applied across the devices to establish a resonance frequency. Devices include variable delays, modulators, frequency translators, wave guides, tunable filters, etc.
摘要翻译： 电场可控设备，其工作原理是通过其中的波速度变化。 这些波可以是磁弹性或自旋波，包括表面波。 这些器件中使用的材料包括Ga2-xFexO3，Cr2O3和YIG。 当器件的电场发生变化时，器件的回旋加速器谐振频率会大大偏移，导致波速变化达到50％左右。 通常在器件上施加偏置磁场以建立谐振频率。 设备包括可变延迟，调制器，频率转换器，波导，可调谐滤波器等
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2.发明授权Method and device for detecting the velocity of droplets formed from a liquid stream 失效用于检测从液体流形成的液滴的速度的方法和装置
公开(公告)号：US3907429A
公开(公告)日：1975-09-23
申请号：US49569674
申请日：1974-08-08
申请人： IBM
摘要： Droplets from a liquid stream are directed between a pair of apertures and a light source, which is strobed at a selected frequency and directed toward the apertures. In one embodiment, the apertures are spaced less than a wavelength of the droplets apart and the light source is strobed at a frequency other than the frequency of the droplets. The time between when a first of the apertures is blocked by a droplet in the stream as indicated by the light being broken during a strobe and the time when a second of the apertures is blocked by another droplet when the light source is strobed is counted. This period of time will give the velocity of the droplets, and correction of the velocity is made, if the velocity of the droplets is not at the desired velocity, by changing the pressure, for example, of the manifold supplying the liquid stream until the desired velocity is obtained. In another embodiment, the apertures are spaced from each other a wavelength or an integral of the wavelength of the droplets, and the light source is strobed at the same frequency as the frequency at which the droplets are generated. The strobing frequency has its phase changed relative to the frequency of drop generation and the pressure of the stream changed until both of the apertures are blocked simultaneously. Any deviation from this indicates that the velocity of the droplets has changed and correction must be made.
摘要翻译： 来自液体流的液滴被引导在一对孔和光源之间，该光源以选定的频率被选通并指向孔。 在一个实施例中，孔径间隔小于液滴的波长，并且光源以不同于液滴的频率的频率被选通。 在第一个孔之间的时间之间被流中的液滴阻挡，如在选通期间被断开的光所示，并且当光源被选通时，第二个孔被另一个液滴阻挡的时间被计数。 这个时间段将给出液滴的速度，如果液滴的速度不是所需的速度，则通过改变供应液体流的歧管的压力直到 获得所需的速度。 在另一个实施例中，孔彼此间隔开波长或液滴的波长的整体，并且以与产生液滴的频率相同的频率选通光源。 选通频率相对于液滴产生的频率具有相位变化，并且流的压力改变，直到两个孔同时被阻挡。 与此有任何偏差，表示液滴的速度发生变化，必须进行校正。
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