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公开(公告)号：US5754044A
公开(公告)日：1998-05-19
申请号：US349421
申请日：1994-12-05
申请人： Aram Tanielian , George D. Carlsen, II , Alexey L. Solodov , Andrey Ya Chervonenkis , Vladimir L. Gribkov , Nikolay N. Kiryuhin
发明人： Aram Tanielian , George D. Carlsen, II , Alexey L. Solodov , Andrey Ya Chervonenkis , Vladimir L. Gribkov , Nikolay N. Kiryuhin
IPC分类号： G01N27/82 , G01R33/032 , G01R33/00 , G01R33/12
CPC分类号： G01N27/82 , G01R33/0325
摘要： A magnetooptic device to be used in industrial applications to investigate articles for flaws or defects. The magnetooptic device is capable of revealing defects in articles of nonmagnetic and magnetic conducting material. These results are achieved by designing a magnetooptic device having a magnetooptic transformer element on its bottom surface and incorporating a front electrical contact and a rear electrical contact on the bottom surface of the MO device. The respective electrical contacts are connected by wire conductors to the respective positive and negative terminals of a source of electrical current. The defect pattern of an article can be either visually viewed or the defect pattern can be recorded on a tape or magnetic rubber sheet placed between the bottom surface of the MO device and the top surface of the article being analyzed.
摘要翻译： 用于工业应用的磁光装置，用于研究物品的缺陷或缺陷。 磁光装置能够揭示非磁性和导磁材料制品中的缺陷。 这些结果通过在其底表面上设计具有磁光变压器元件的磁光装置来实现，并且在MO装置的底表面上并入前电接触和后电接触。 相应的电触头通过导线连接到电流源的相应的正极和负极端子。 制品的缺陷图案可以被视觉观看，或者可以将缺陷图案记录在放置在MO装置的底表面和被分析物品的顶表面之间的胶带或磁性橡胶片上。
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公开(公告)号：US4234805A
公开(公告)日：1980-11-18
申请号：US886716
申请日：1978-03-15
IPC分类号： H03K17/0412 , H03K17/12 , H03K17/60 , H03K3/26
CPC分类号： H03K17/04126 , H03K17/12
摘要： A circuit and method of paralleling power transistors connected as a Darlington circuit or device for use with electric motor controls. The circuit is comprised of a plurality of Darlington devices having a drive circuit from a motor controller connected to a common base connection and a plurality of active pull-down circuits for reducing the rise and fall times and effectively controlling the storage times of the power transistors. The active pull-down circuits are capacity coupled to an inverted drive signal to synchronize the turn-off time and speed-up discharge of storage in the power transistor circuit.
摘要翻译： 将作为达林顿电路连接的功率晶体管并联的电路和方法用于电动机控制。 该电路包括多个达林顿器件，具有来自连接到公共基极连接的电机控制器的驱动电路和用于减少上升和下降时间的多个有源下拉电路并有效地控制功率晶体管的存储时间 。 有源下拉电路电容耦合到反相驱动信号，以使功率晶体管电路中的关断时间和存储器的加速放电同步。
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3.发明授权Apparatus for reading analog sound tracks on film with circuit for averaging sound track boundaries to reduce the effect of noise 失效用于在胶片上读取模拟声轨的装置，用于平均声轨边界以减少噪声的影响
公开(公告)号：US5526075A
公开(公告)日：1996-06-11
申请号：US192365
申请日：1994-02-07
CPC分类号： G11B7/0032
摘要： An analog-digitizer sound system for motion pictures that automatically converts both old and new analog stereo film-sound tracks to digital quality sound. The system eliminates the noise, rumble and hiss from any standard 35 mm analog optical sound track. By simply playing the film through the projector sound head in the normal manner the system automatically converts the analog optical sound tracks to digital format. No special storing of digital data on film is required and no special digital decoder equipment is needed. The system produces noise-free sound, increased frequency response, expanded dynamic range and clarity of dialogue. Film studios will no longer need to maintain a double inventory of digital and analog sound or process sound tracks for noise reduction.
摘要翻译： 用于动态影像的模拟数字化仪音响系统，可自动将旧的和新的模拟立体声电影音轨转换为数字质量声音。 该系统消除了任何标准35 mm模拟光学声轨的噪音，隆隆声和嘶嘶声。 通过以正常方式简单地通过投影仪声音头播放电影，系统将自动将模拟光学音轨转换为数字格式。 不需要专门存储电影数字数据，不需要特殊的数字解码器设备。 该系统产生无噪音，增加频率响应，扩大动态范围和对话清晰度。 电影制片厂将不再需要保留数字和模拟声音或过程音轨的双重清单，以减少噪音。
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公开(公告)号：US5025473A
公开(公告)日：1991-06-18
申请号：US399236
申请日：1989-08-24
摘要： An arrangement of divergently mounted acoustic transducers in a hemispherical air tight enclosure, the enclosure being sized with regard to the loading requirements of the acoustic transducers to produce a small size speaker system having an omnidirectional sound radiation pattern and a flat frequency response without the need of a crossover network. The hemispherical enclosure being comprised of six flat equal sided pentagonal plates, five triangular shaped flat gussets and a flat base plate all of which when assembled forms a half dodecahedron polyhedron shaped enclosure with a closed base, with the base serving as the enclosure mounting surface.
摘要翻译： 在半球形密封外壳中的分散安装的声学传感器的布置，该外壳的尺寸相对于声学换能器的载荷要求而定尺寸，以产生具有全向声辐射图案和平坦频率响应的小尺寸扬声器系统，而不需要 交叉网络。 该半球形外壳包括六个平的等边五边形板，五个三角形扁平角撑板和一个平底座板，所有这些板组装在一起形成具有封闭底座的半十二面体多面体形状的外壳，底座用作外壳安装表面。
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公开(公告)号：US06351302B1
公开(公告)日：2002-02-26
申请号：US09569145
申请日：2000-05-11
IPC分类号： G03B3102
CPC分类号： G11B20/24 , G03B31/02 , G11B7/0032 , G11B20/10
摘要： The system eliminates the noise, rumble and hiss from any standard 35 mm analog optical sound track. By simply feeding the film through the projector sound head in a normal manner the system automatically converts the analog optical sound tracks to digital quality. No special storing of digital data on film is required and no special digital decoder equipment is needed. The system produces noise-free sound, increased frequency response, expanded dynamic range and clarity of the dialogue. Film studios will no longer need to carry a double inventory of films having digital and analog sound tracks or to process the sound tracks for noise reduction.
摘要翻译： 该系统消除了任何标准35 mm模拟光学声轨的噪音，隆隆声和嘶嘶声。 通过简单地通过投影机声头馈送胶片，系统将模拟光学声道自动转换为数字质量。 不需要专门存储电影数字数据，不需要特殊的数字解码器设备。 该系统产生无噪音，增加频率响应，扩大动态范围和对话清晰度。 电影制片厂将不再需要携带具有数字和模拟声轨的电影的双重库存，或者处理音轨以降噪。
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公开(公告)号：US4310731A
公开(公告)日：1982-01-12
申请号：US63058
申请日：1979-08-02
CPC分类号： H04R23/00
摘要： A source of driving signals is coupled to a thermal transducer wire to provide a completed circuit. The source may include a DC bias supply and an audio amplifier. The bias supply heats the wire to a predetermined temperature, and the amplifier heats and cools the wire above and below the predetermined temperature. The wire expands and contracts in response to the audio signals, thus providing for acoustic reproduction thereof. The wire may be coupled to a diaphragm, such as a conventional speaker cone, to accomplish the acoustic reproduction. A lever arrangement coupled between the wire and the diaphragm may be employed to obtain increased diaphragm motion. A lever arrangement employing two wires in a push-pull configuration is also provided for obtaining increased motion. Additionally, a true RMS meter and a relay are provided which incorporate the heated wire thermal motion arrangement.
摘要翻译： 驱动信号源耦合到热传感器导线以提供完整的电路。 源可以包括DC偏置电源和音频放大器。 偏置电源将电线加热到预定温度，并且放大器加热并冷却电线高于和低于预定温度。 线路响应于音频信号而膨胀和收缩，从而提供其声音再现。 线可以耦合到诸如常规扬声器锥体的隔膜，以实现声音再现。 可以使用耦合在线和隔膜之间的杠杆布置来获得增加的隔膜运动。 还提供了采用推挽配置的两根电线的杠杆装置，用于获得增加的运动。 另外，提供了真正的RMS计和继电器，其包括加热的线热运动装置。
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公开(公告)号：US4253070A
公开(公告)日：1981-02-24
申请号：US36050
申请日：1979-05-04
CPC分类号： H03F1/347
摘要： An arrangement to provide feedback to amplifier systems incorporating an electrical load. A current transformer in conjunction with a resistor is incorporated to provide a feedback correction signal to an amplifier which corrects for distortion caused by both the amplifier and the inductive load. A first embodiment provides a single-ended amplifier driving a load and incorporates the current transformer between the output of the amplifier and the load. The secondary winding of the transformer is in series with the input to the amplifier, and a resistor is connected across the secondary winding. The transformer determines the frequency bandwidth of the entire amplifier system, and the resistor value determines the gain of the amplifier. Such a configuration provides negative feedback to the amplifier which is directly proportional to changes in current in the load due to distortions caused by the amplifier or load. The second embodiment applies the principles of the present invention to a differential amplifier configuration. The primary winding of the current transformer is connected between the output of the amplifier and one end of the load. A secondary winding of the transformer is connected to the other end of the load and to the negative input of the differential amplifier. A resistor is connected across the secondary winding of the transformer.
摘要翻译： 一种为包含电负载的放大器系统提供反馈的装置。 结合电阻器的电流互感器被结合以向放大器提供反馈校正信号，该放大器校正由放大器和感性负载引起的失真。 第一实施例提供驱动负载的单端放大器，并且将放大器的输出端与负载之间的电流互感器并入。 变压器的次级绕组与放大器的输入串联，并且电阻器连接在次级绕组两端。 变压器决定了整个放大器系统的频率带宽，电阻值决定了放大器的增益。 这种配置向放大器提供负反馈，其由于由放大器或负载引起的失真而与负载中的电流变化成正比。 第二实施例将本发明的原理应用于差分放大器配置。 电流互感器的初级绕组连接在放大器的输出端和负载的一端之间。 变压器的次级绕组连接到负载的另一端和差分放大器的负输入端。 在变压器的次级绕组两端连接一个电阻。
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