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公开(公告)号：US3973143A
公开(公告)日：1976-08-03
申请号：US536853
申请日：1974-12-27
CPC分类号： H03K17/74
摘要： An electronic switch is disclosed comprising a transistor bridge having input and output signaling nodes and bias control nodes. A pair of matched current sources are selectively activated and deactivated in a series arrangement with symmetrical turn-on turn-off circuitry in response to a receipt of instruction signals. The instruction signals control the gating of a constant current to the turn-on/off circuitry for enabling the matched current sources to selectively apply and withdraw matched currents from bias control nodes. Switched turn-off circuitry is employed for reverse biasing the transistor bridge in response to a deactivation of the matched current sources. A pair of voltage reference and antisaturation circuits cooperate with bridge discharge circuits to effect the reverse biasing of the bridge and to discharge rapidly the effective electrical capacitance of that bridge shortly after the receipt of a bridge turn-off instruction.
摘要翻译： 公开了一种电子开关，其包括具有输入和输出信令节点和偏置控制节点的晶体管桥。 响应于接收到指令信号，一对匹配的电流源被选择性地以具有对称的导通关断电路的串联布置被激活和去激活。 指令信号控制向导通/断开电路施加恒定电流的门控，以使匹配的电流源能够有选择地从偏置控制节点应用和撤出匹配的电流。 开关关断电路用于响应于匹配的电流源的去激活来反向偏置晶体管桥。 一对电压基准和抗饱和电路与桥式放电电路配合，以实现桥接器的反向偏置，并在接收到桥接断开指令后不久快速放电该桥接器的有效电容。
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公开(公告)号：US4046968A
公开(公告)日：1977-09-06
申请号：US711810
申请日：1976-08-05
CPC分类号： H04M19/003
摘要： A line transformer circuit in which the DC component of magnetization produced in the tip and ring windings by the battery supplying loop current to the telephone set microphone may be neutralized by an oppositely-poled, serially-connected balancing winding is disclosed. One end of the balancing winding is connected to the supply battery and is, therefore, at AC ground. The other end is kept at a point of high AC impedance to ground by the collector of a transistor so that audio frequency voltages induced in the balancing winding cannot load the transformer. The AC currents in the tip and ring windings are provided with a virtual ground return path by means of a differential amplifier controlled Darlington pair in circuit between the tip and ring windings and the balancing winding. The AC components of the Darlington pair collector current are bypassed to ground by a shunt capacitor at the junction of the Darlington pair collector terminal and the third winding. The differential amplifier senses voltage changes at the virtual ground so that the Darlington pair is driven to suppress these changes. Advantageously, the differential amplifier may be powered from the voltage drop appearing across the Darlington pair thereby facilitating circuit integration.
摘要翻译： 公开了一种线路变压器电路，其中通过电池供电回路电流在电话机麦克风中在尖端和环绕组中产生的磁化的DC分量可被相对极化的串联连接的平衡绕组中和。 平衡绕组的一端连接到电源电池，因此处于AC地。 另一端通过晶体管的集电极保持在高交流阻抗的接地点，使得在平衡绕组中感应的音频电压不能加载变压器。 尖端和环绕组中的交流电流通过在尖端和环绕组与平衡绕组之间的电路中的差分放大器控制的达林顿对设置有虚拟接地返回路径。 达林顿对集电极电流的交流分量通过位于达林顿对集电极端子和第三绕组的连接处的并联电容器旁路接地。 差分放大器感测虚拟地面的电压变化，以便驱动达林顿对以抑制这些变化。 有利的是，差分放大器可以通过达林顿对出现的电压降来供电，从而便于电路集成。
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3.发明授权Inductor or low loss interconnect and a method of manufacturing an inductor or low loss interconnect in an integrated circuit 有权电感器或低损耗互连以及在集成电路中制造电感器或低损耗互连的方法公开(公告)号：US06395611B1
公开(公告)日：2002-05-28
申请号：US09432725
申请日：1999-11-01
申请人： Nathan Belk , William Thomas Cochran , Michel Ranjit Frei , David Clayton Goldthorp , Shahriar Moinian , Kwok K. Ng , Mark Richard Pinto , Ya-Hong Xie
发明人： Nathan Belk , William Thomas Cochran , Michel Ranjit Frei , David Clayton Goldthorp , Shahriar Moinian , Kwok K. Ng , Mark Richard Pinto , Ya-Hong Xie
IPC分类号： H01L2120
CPC分类号： H01L28/10 , H01L23/5227 , H01L23/645 , H01L27/08 , H01L2924/0002 , H01L2924/00
摘要： An integrated circuit with a buried layer for increasing the Q of an inductor formed in the integrated circuit. The substrate includes a highly doped buried preserving device and latchup characteristics. The inductor may also include an increased thickness conductive layer in the inductor to further increase Q. The present invention is also directed to a low loss interconnect.
摘要翻译： 一种具有埋层的集成电路，用于增加形成在集成电路中的电感器的Q。 衬底包括高掺杂掩埋保存装置和闭锁特性。 电感器还可以包括电感器中增加的厚度导电层以进一步增加Q.本发明还涉及一种低损耗互连。
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公开(公告)号：US3973141A
公开(公告)日：1976-08-03
申请号：US536851
申请日：1974-12-27
CPC分类号： H03K17/6271 , Y10T29/4987
摘要： This specification discloses transistor circuitry suitable for use as a switch or as a floating current driver to control the concurrent operation of a pair of utilization devices. The circuitry comprises an NPN and a PNP output transistor which are substantially simultaneously switchable to ON and OFF states by a bias control means. The output transistors each have a collector connectable to a utilization device and a voltage of a prescribed polarity. Emitters of the output transistors are connected together in a floating voltage arrangement via a resistor. The bias control means comprises a pair of NPN transistors and a diode connected PNP transistor illustrated for switching the NPN output transistor and then the PNP output transistor to ON and OFF states. A logic gate switches a constant current to the bias control transistors for controlling the switching operations.
摘要翻译： 本说明书公开了适合用作开关或浮动电流驱动器的晶体管电路，以控制一对利用装置的并行操作。 电路包括NPN和PNP输出晶体管，其通过偏置控制装置基本上可同时切换到导通和截止状态。 输出晶体管各自具有可连接到利用装置的集电极和规定极性的电压。 输出晶体管的发射极通过电阻器以浮置电压排列连接在一起。 偏置控制装置包括一对NPN晶体管和二极管连接的PNP晶体管，用于将NPN输出晶体管开关，然后将PNP输出晶体管切换到导通和截止状态。 逻辑门将恒定电流切换到偏置控制晶体管，以控制开关操作。
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