专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明授权

US3944962A Variable resistance attenuator 失效
标题翻译：可变电阻衰减器
公开(公告)号：US3944962A
公开(公告)日：1976-03-16
申请号：US499653
申请日：1974-08-22
申请人： Hisashi Honda
发明人： Hisashi Honda
IPC分类号： H01P1/22 , H01C10/40 , H01C13/00 , H03H7/24 , H03H7/26 , H01C10/16 , H01C10/22 , H01C13/02
CPC分类号： H03H7/24
摘要： A variable-resistance attenuator having first and second resistive layers deposited upon an insulating substrate. Input and output terminals are electrically connected at spaced intervals to one of the resistive layers and a common terminal is electrically connected to the remaining one of the resistive layers. A pair of contacts are adapted to make slidable electrical engagement, each with an associated one of the resistive layers. Conductive bridging means mechanically and electrically connect the sliding contacts. Mechanical means are provided for simultaneous movement of the sliding contacts to change the resistance in a smooth and continuous fashion.
摘要翻译：一种可变电阻衰减器，其具有沉积在绝缘衬底上的第一和第二电阻层。输入和输出端子以间隔的间隔电连接到电阻层中的一个，并且公共端子与剩余的电阻层电连接。一对触点适于使可滑动的电接合，每个具有相关联的一个电阻层。导电桥接装置是机械和电气连接滑动触头。提供机械装置用于同时移动滑动触点，以平滑和连续的方式改变电阻。

52. 发明授权

US3924207A Variable attenuator apparatus 失效
标题翻译：可变衰减器装置
公开(公告)号：US3924207A
公开(公告)日：1975-12-02
申请号：US53151774
申请日：1974-12-11
申请人： PRECISION ELECTRONICS COMPONEN
发明人： SIMONI ARNOLD
IPC分类号： H03H7/24 , H03H7/26
CPC分类号： H03H7/24
摘要： The invention provides a variable attenuator apparatus for high frequency application comprising fixed and variable resistance elements moulded together as an integral part on an insulating base supported within an insulating housing, the variable resistance elements being operated in unison from a common rotatable shaft extending inwardly of the housing. A pair of spaced apart stationary insulating substrate elements are supported within the housing, one of the elements including a shaft-receiving aperture through which the rotatable shaft extends, and a contact brush carrier is disposed between the substrate elements and mounted on the rotatable shaft for rotation therewith. Each of the substrate elements has an arcuate resistance track and a conducting collector track, and one substrate element also has a pair of fixed resistors connected between one end of the arcuate resistance track and respective first and second terminals of said element. A pair of springloaded contact brushes are mounted on opposite faces of the contact brush carrier, each contact brush being spring biased into sliding bridging engagement with the arcuate resistance track and collector track of the respective substrate element to define a variable resistor. Three external terminal connections to the attenuator network are provided.
摘要翻译：本发明提供了一种用于高频应用的可变衰减器装置，其包括固定和可变电阻元件，该固定和可变电阻元件作为整体部分模制在支撑在绝缘壳体内的绝缘基底上，可变电阻元件与从内部延伸的公共可旋转轴一致地操作住房。一对间隔开的静止绝缘基板元件被支撑在壳体内，其中一个元件包括一个轴接收孔，可旋转的轴延伸穿过该孔，接触刷载体设置在基板元件之间并安装在可旋转轴上与其旋转。每个基板元件具有弧形电阻轨道和导电收集器轨道，并且一个基板元件还具有连接在弓形电阻轨道的一端与所述元件的相应第一和第二端子之间的一对固定电阻器。一对弹簧加载的接触刷安装在接触刷载体的相对表面上，每个接触刷被弹簧偏置成与相应基板元件的弓形电阻轨道和集电体轨迹滑动桥接，以限定可变电阻器。提供与衰减器网络的三个外部端子连接。

53. 发明授权

US3908178A Plug-in adjustable attenuator construction 失效
标题翻译：插入式可调衰减器结构
公开(公告)号：US3908178A
公开(公告)日：1975-09-23
申请号：US47357974
申请日：1974-05-28
申请人： BEJED INC
发明人： JOHNSON BILL E , DANNENMANN JR JOHN E
IPC分类号： H03H7/24 , H03H7/26
CPC分类号： H03H7/24
摘要： A plug-in adjustable attenuator including a receptacle base adapted to receive different selected pairs of mating plug-in units, one for setting integral values of attenuation, and the other for setting fractional values. Electrically, the attenuator comprises a pair of series-connected balanced resistance networks, one establishing integral attenuation values, and the other, proper fractional values in a line to which the attenuator is connected. In addition to other advantages, employing separate networks for integral and fractional values of attenuation greatly reduces the number of plug-in parts needed to cover a desired attenuation range in small increments.
摘要翻译：一种插入式可调衰减器，包括适于接收不同选择的配对插件单元的接收器底座，一个用于设置衰减的积分值，另一个用于设置分数值。电子地，衰减器包括一对串联连接的平衡电阻网络，一个建立积分衰减值，另一个是衰减器连接的线路中适当的分数值。除了其他优点之外，采用单独网络的衰减量的积分值和分数值大大减少了以小增量覆盖所需衰减范围所需的插件数量。

54. 发明授权

US3898593A Switchable resistive attenuators 失效
标题翻译：可切换电阻衰减器
公开(公告)号：US3898593A
公开(公告)日：1975-08-05
申请号：US40086273
申请日：1973-09-26
申请人： SOLARTRON ELECTRONIC GROUP
发明人： QURESHI UMAR
IPC分类号： H03H7/24 , H03H7/26
CPC分类号： H03H7/24
摘要： An adjustable attenuator comprises first and second inputs, first and second resistors connected in series from the first input, and a switch for selectively connecting the end of the second resistor remote from the first resistor either to the first input or to the second input, the output of the attenuator being taken between the junction between the resistors and the second input. Thus when the switch is in its first state, the two resistors are connected in parallel with each other and in series with the first input, providing an attenuation factor substantially equal to one, while when the switch is in its second state, the two resistors are series connected between the first and second inputs as a potential divider chain. This arrangement insures that any stray capacitance introduced by the switch is not connected across the output of the attenuator.
摘要翻译：可调衰减器包括第一和第二输入端，与第一输入串联连接的第一和第二电阻器以及用于选择性地将第二电阻器的端部与第一电阻器连接到第一输入端或第二输入端的开关，衰减器的输出在电阻器和第二输入端之间的接合点之间。因此，当开关处于其第一状态时，两个电阻器彼此并联并与第一输入串联，提供基本上等于1的衰减因子，而当开关处于其第二状态时，两个电阻器串联在第一和第二输入之间作为分压器链。

55. 发明授权

US3870976A Integrated attenuation element comprising semiconductor body 失效
标题翻译：集成衰减元件包含半导体器件
公开(公告)号：US3870976A
公开(公告)日：1975-03-11
申请号：US32103173
申请日：1973-01-04
申请人： SIEMENS AG
发明人： KRAUSE GERHARD
IPC分类号： H03H1/00 , H01L21/331 , H01L21/822 , H01L27/04 , H01L29/00 , H01L29/66 , H01L29/73 , H01L29/86 , H03H7/25 , H01P1/22 , H03H7/24
CPC分类号： H03H7/255 , H01L29/00
摘要： An integrated attenuation element having a variable attenuation characteristic for high frequency signals comprises a semiconductor body of one conductivity type in one face of which there are arranged two zones of the other conductivity type. The semiconductor body has a contact electrode on the face opposite to that containing the two zones. One of the two zones serves as an input or as an output and the contact electrode serves as an output or as an input, respectively, for the high frequency signals, and the other of the two zones serves as a control zone. In a controllable attenuation circuit means are provided for applying a first control signal between the input and output of the attenuation element, the output being decoupled from ground with respect to high frequencies. The amplitude of the first signal is variable in such a manner that for minimum attenuation it possesses a value at which the p-n junction defining the input zone in the semiconductor body is biased in the forward direction, and to provide increased attenuation the first signal falls to a limiting value at which the p-n junction does not conduct. Means are also provided for applying a second control signal between the control zone, which is connected to ground for high frequencies, and the output. The amplitude of the second control signal is variable in such a manner that for minimum attenuation it possesses a value at which the p-n junction defining the control zone in the semiconductor body does not conduct current, and to provide increased attenuation up to a maximum amount, the signal increases with a polarity such that the p-n junction continuously conducts current to an increasing extent.
摘要翻译：具有用于高频信号的可变衰减特性的集成衰减元件包括一个导电类型的半导体本体，其一面中布置有另一导电类型的两个区域。半导体本体在与包含两个区域的面相对的面上具有接触电极。两个区域中的一个用作输入或作为输出，并且接触电极分别用作高频信号的输出或输入，并且两个区域中的另一个用作控制区。在可控制的衰减电路中，提供了用于在衰减元件的输入和输出之间施加第一控制信号的装置，该输出相对于高频从地面分离。第一信号的幅度可以这样的方式变化，即对于最小衰减，它具有一个值，在该值处，限定半导体主体中的输入区的pn结在向前方向被偏置，并且为了提供增加的衰减，第一信号下降到 pn结不导通的极限值。还提供了用于在与高频接地的控制区域和输出端之间施加第二控制信号的装置。第二控制信号的幅度可以这样的方式变化，即对于最小衰减，它具有一个值，在该值处，限定半导体主体中的控制区的pn结不传导电流，并且提供增加到最大量的衰减，信号以极性增加，使得pn结连续地传导电流到增加的程度。

56. 发明授权

US3858128A 1 db step attenuator 失效
标题翻译： 1个DB STEP衰减器
公开(公告)号：US3858128A
公开(公告)日：1974-12-31
申请号：US43962374
申请日：1974-02-04
申请人： TEXTRON INC
发明人： MULLIN C
IPC分类号： H03H7/24 , H03H7/26
CPC分类号： H03H7/24
摘要： An attenuator for audiometers and including a 5 dB step attenuator ladder, additional 1 dB step attenuator resistances connected in series with each other and connected by means of switching areas and wiper contacts moving over such switching areas of a switching plate to sequentially connect all of such resistances in series with the attenuator ladder and progressively short each such resistance out of the attenuation circuit as the wiper contacts move across the switching areas and thereby obtain a 1 dB step attenuation while maintaining the large increments in the 5 dB step attenuator ladder.
摘要翻译：一个用于听力计的衰减器，包括一个5 dB的阶梯衰减器梯形图，另外1 dB的阶跃衰减器电阻相互串联连接，并通过开关区域和擦拭器触点连接，这些开关区域和擦拭器触点在切换板的这种开关区域上移动，与衰减器梯子串联的电阻，并且随着擦拭器触头移动穿过开关区域，衰减电路中的每个这样的电阻逐渐变短，从而获得1dB的阶跃衰减，同时保持在5dB阶跃衰减梯子中的大增量。

57. 发明授权

US3676807A Film attenuator with distributed capacitance high frequency compensation 失效
标题翻译：具有分布式电容高频补偿的薄膜衰减器
公开(公告)号：US3676807A
公开(公告)日：1972-07-11
申请号：US3676807D
申请日：1971-05-19
申请人： TEKTRONIX INC
发明人： BOER MACHIEL
IPC分类号： H03H7/24
CPC分类号： H03H7/24 , Y10T29/49002
摘要： A thick film attenuator including series and shunt resistances coated on an insulator substrate is described in which the first distributed capacitance of a lead conductor connecting a variable capacitor in parallel with the series resistance is compensated by the second distributed capacitance of a ground conductor on the opposite side of such series resistance. This prevents the attenuation ratio from changing with frequency for high frequency input signals which tends to be caused by such first distributed capacitance with high impedance attenuators due to the greater length of the series resistance. The spacing between the lead conductor and the series resistance decreases with distance along such resistor from the terminal connected to the variable capacitor, while the spacing between the ground conductor and the series resistance increases with such distance to provide the first and second distributed capacitances which change hyperbolically with such distance so that the attenuation ratio of the capacitance divider is the same as that of the resistance divider at any point along the series resistance.
摘要翻译：描述了包括涂覆在绝缘体基板上的串联和分流电阻的厚膜衰减器，其中连接可变电容器与串联电阻并联的引线导体的第一分布电容由相对的接地导体的第二分布电容补偿这样的串联电阻。这可以防止由于串联电阻的较大长度而导致的具有高阻抗衰减器的这种第一分配电容倾向于引起的高频输入信号的衰减比随频率变化。引线导体和串联电阻之间的间距随着连接到可变电容器的端子沿着这种电阻器的距离而减小，而接地导体和串联电阻之间的间距随着这样的距离而增加，以提供改变的第一和第二分布电容双极性地具有这样的距离，使得电容分压器的衰减比与电阻分压器在串联电阻的任何点的衰减比相同。

58. 发明授权

US3673492A Voltage controlled hybrid attenuator 失效
标题翻译：电压控制混合衰减器
公开(公告)号：US3673492A
公开(公告)日：1972-06-27
申请号：US3673492D
申请日：1971-07-27
申请人： US ARMY
发明人： GILSON RUSSELL A
IPC分类号： H01P1/22 , H03H7/25 , H03H7/24
CPC分类号： H03H7/255 , H01P1/227
摘要： This disclosure relates to attenuators and, particularly, to controllable, constant-impedance attenuators. More particularly, this disclosure describes a voltage or current-controlled absorptive attenuator, using a four terminal hybrid circuit, wherein the amount of power passed from the input terminal to the output terminal can be varied from zero to maximum by controlling the amount of power diverted to the other two, quadrature terminals of the hybrid network.
摘要翻译：本公开涉及衰减器，特别是涉及可控的恒定阻抗衰减器。更具体地，本公开描述了使用四端混合电路的电压或电流控制吸收衰减器，其中从输入端子到输出端子的功率量可以从零变化到最大值，通过控制转向的功率量到另外两个，混合网络的正交终端。

59. 发明授权

US3626352A Attenuator switches having deposited layer-type circuitry 失效
标题翻译：具有沉积层型电路的衰减器开关
公开(公告)号：US3626352A
公开(公告)日：1971-12-07
申请号：US3626352D
申请日：1970-04-06
申请人： BECKMAN INSTRUMENTS INC
发明人： MCCOIG KENNETH W
IPC分类号： H01C10/06 , H01C10/08 , H03H7/24 , H01C9/04
CPC分类号： H01C10/08 , H01C10/06 , H03H7/24
摘要： Attenuator switches having deposited layer-type resistors, conductors, and switch pads. In one embodiment, a step attenuator comprises a plurality of pi attenuator sections formed of resistive and conductive films disposed on stationary ceramic wafers. Relatively rotatable ceramic wafers carry conductive film switch pads which cooperate with switch contacts extending from the stationary wafers to bypass or insert selected pi sections into an electrical circuit. A bridged-T embodiment includes an electrically insulative wafer having interconnected film-type resistors and switch pads on both faces thereof. A set of rotatable wiper contacts cooperates with the pads to control the effective attenuation of the bridged-T circuit.

60. 发明授权

US3594632A Adjustable attenuators and filter apparatus 失效
标题翻译：可调节的衰减器和过滤器
公开(公告)号：US3594632A
公开(公告)日：1971-07-20
申请号：US3594632D
申请日：1970-03-13
申请人： LUGER PAUL P
发明人： LUGER PAUL P
IPC分类号： H03H7/06 , H03H7/24 , G05F3/00
CPC分类号： H03H7/06 , H03H7/24
摘要： Three types of potentiometer circuits, resistive, capacitive and inductive are employed in overall adjustable attenuator systems. Each element in a switching network is either a single-terminal element or a double-terminal element and minimum contact between networks follow a switch rule principle.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式