公开(公告)号：US20170373684A1

公开(公告)日：2017-12-28

申请号：US15191972

申请日：2016-06-24

申请人： Cree, Inc.

发明人： Yuequan Hu ,  Amruteshwar Hiremath ,  Kory A. Liszt

IPC分类号： H03K17/68

CPC分类号： H03K17/68 ,  H03K17/72 ,  H03K2217/0009 ,  H03K2217/0054

摘要： A high reliability AC load switching circuit is disclosed. In some embodiments, the AC load switching circuit includes a high-speed switch connected between the load and the voltage source, a cutoff switch connected between the load and the voltage source in parallel with the high-speed switch, and a level detector connected to the voltage source and to a control input of the high-speed switch. The high-speed switch may be a solid-state switch, for example, a TRIAC or a bidirectional switch, and the cutoff switch may be an electromechanical switch, for example, a relay. In some embodiments a snubber is connected in parallel with a solid-state switch. In some embodiments a microcontroller is connected to an eletromechanical switch and the level detector. In some embodiments, both a first cutoff switch and a second cutoff switch are used.

公开(公告)号：US20170310313A1

公开(公告)日：2017-10-26

申请号：US15612998

申请日：2015-12-04

申请人： Joulwatt Technology Inc. Limted

发明人： Pitleong Wong ,  Yang Lu ,  Yue Ji ,  Yuancheng Ren ,  Xunwei Zhou

IPC分类号： H03K5/1536 ,  H03K5/24 ,  G01R19/175 ,  H03K17/68 ,  H03K17/13

CPC分类号： H03K5/1536 ,  G01R19/0084 ,  G01R19/175 ,  H03K5/2454 ,  H03K5/2463 ,  H03K17/133 ,  H03K17/68 ,  H05B33/0815

摘要： A circuit and a method for detecting a current zero-crossing point, and a circuit and method for detecting a load voltage are disclosed. The circuit for detecting current zero-crossing point includes: a load power supply circuit (14), a voltage-dividing resistor (16), a transistor switch (15), a zero-crossing detection circuit (19); the load power supply circuit (14) includes: a load (11), a diode (13), and an inductor (12); one end of the load power supply circuit (14) is connected with the operating voltage input terminal, the other end of the load power supply circuit (14) is connected with a first end of the transistor switch (15) and a first end of the voltage-dividing resistor (16), a second end of the voltage-dividing resistor (16) and a second end of the transistor switch (15) are connected with the ground, the load voltage is controlled by the transistor switch (15), the voltage-dividing terminal of the voltage-dividing resistor (16) is connected to a signal input terminal of the zero-crossing detection circuit (19), the zero-crossing detection circuit (19) is used to determine whether the current of the diode (13) crosses zero to obtain the on time of the diode (13), and the circuit for detecting load voltage uses the on time of the diode (13) and the on time of the transistor switch (15) to obtain the load voltage. The circuits are simple, but with high detection efficiency and low cost.

公开(公告)号：US09787298B2

公开(公告)日：2017-10-10

申请号：US15267085

申请日：2016-09-15

申请人： Ideal Power Inc.

发明人： William C. Alexander ,  Richard A. Blanchard

IPC分类号： H01L29/73 ,  H03K17/06 ,  H01L29/16 ,  H01L29/735 ,  H01L27/06 ,  H01L29/10 ,  H01L29/08 ,  H03K17/66 ,  H03K17/68 ,  H01L29/747

CPC分类号： H01L29/0619 ,  H01L27/0694 ,  H01L29/0808 ,  H01L29/0821 ,  H01L29/1004 ,  H01L29/1008 ,  H01L29/16 ,  H01L29/66295 ,  H01L29/732 ,  H01L29/735 ,  H01L29/7393 ,  H01L29/747 ,  H03K17/06 ,  H03K17/08112 ,  H03K17/66 ,  H03K17/665 ,  H03K17/68 ,  H03K2217/0054 ,  H03K2217/0063 ,  H03K2217/0072

摘要： Methods and systems for operating a double-base bidirectional power bipolar transistor. Two timing phases are used to transition into turn-off: one where each base is shorted to its nearest emitter/collector region, and a second one where negative drive is applied to the emitter-side base to reduce the minority carrier population in the bulk substrate. A diode prevents reverse turn-on while negative base drive is being applied.

公开(公告)号：US09722608B2

公开(公告)日：2017-08-01

申请号：US15217294

申请日：2016-07-22

申请人： Mercury Systems, Inc.

发明人： Robert V. Lazaravich

IPC分类号： H03K5/08 ,  H03K19/0185 ,  G05B19/05 ,  H03K17/68 ,  H03K17/795

CPC分类号： H03K19/018507 ,  G05B19/054 ,  H03K5/08 ,  H03K17/68 ,  H03K17/7955

摘要： Various systems may benefit from interfaces for handling multiple types of inputs. For example, a device with a trigger input from an external device may benefit from an isolated logic level trigger that is capable of addressing multiple types and values of voltage. An apparatus can include an input configured to receive an external trigger input signal having a trigger input voltage. The apparatus can also include circuitry configured to automatically adjust the trigger input voltage to a value configured to be compatible with a provided attached system. A working range of the trigger input voltage can exceed a compatible working range of the provided attached system.

公开(公告)号：US08823472B2

公开(公告)日：2014-09-02

申请号：US13885094

申请日：2012-04-03

申请人： Kouetsu Takaya ,  Yasuhiro Naka ,  Kenji Suzuki ,  Yuichi Yamamoto ,  Yuji Shiba

发明人： Kouetsu Takaya ,  Yasuhiro Naka ,  Kenji Suzuki ,  Yuichi Yamamoto ,  Yuji Shiba

IPC分类号： H01H63/02 ,  H01H51/06 ,  H03K17/68 ,  H01H50/16 ,  H01H50/38 ,  H01H9/44 ,  H01H1/06 ,  H01H50/14

CPC分类号： H01H1/06 ,  H01H9/443 ,  H01H50/14 ,  H01H50/163 ,  H01H50/22 ,  H01H50/38 ,  H01H50/42 ,  H01H51/065 ,  H03K17/68

摘要： An electromagnetic contactor has a contact device having a pair of fixed contacts and a movable contact; and an electromagnet unit including an exciting coil driving a movable plunger connected through a connecting shaft. The contact device is configured such that L-shaped portions have a contact portion formed in the pair of fixed contacts fixed maintaining a predetermined interval, and two ends of the movable contact are disposed to be capable of contacting to and separating from the contact portions of the L-shaped portion on a side opposite to that of the electromagnet unit. The electromagnet unit includes a magnetic yoke enclosing a plunger drive portion, a movable plunger having a leading end protruding through an aperture formed in the magnetic yoke and urged by a return spring, and a ring-form permanent magnet magnetized in a movable direction of the movable plunger and fixed to enclose a peripheral flange portion.

摘要翻译： 电磁接触器具有接触装置，该触点装置具有一对固定触头和可动触点; 以及包括驱动通过连接轴连接的活动柱塞的励磁线圈的电磁体单元。 接触装置被构造成使得L形部分具有形成在一对固定触点中的接触部分，固定保持预定间隔，并且可动触头的两端设置成能够接触和分离接触部分的接触部分 在与电磁体单元相反的一侧的L形部分。 电磁体单元包括一个包围柱塞驱动部分的磁轭，一​​个可移动的柱塞，其前端通过形成在磁轭中的孔而突出，并由复位弹簧推动，以及沿着可移动方向磁化的环形永磁体 活动柱塞并固定以包围周边凸缘部分。

公开(公告)号：US20090224738A1

公开(公告)日：2009-09-10

申请号：US12087211

申请日：2006-12-28

申请人： Raymond John Peto

发明人： Raymond John Peto

IPC分类号： G05F1/00

CPC分类号： H03K17/6874 ,  H02M5/293 ,  H03K17/13 ,  H03K17/68

摘要： A circuit is provided for providing a drive signal. The circuit comprises a live input and a neutral input, an output for providing a drive signal, a master logic gate. The first output is connected to the master logic gate output. A dc signal is connected to the input of the master logic gate so that the output of the master logic gate changes when the state of the input changes. A shunt is connected to the live input and is capable of being switched into and out of the circuit in response to the live input voltage changing from positive to negative with respect to the neutral input voltage and vice versa. The shunt is also arranged to provide a short circuit for the dc signal to bypass the input of the master logic gate.

摘要翻译： 提供用于提供驱动信号的电路。 电路包括有源输入和中性输入，用于提供驱动信号的输出，主逻辑门。 第一个输出连接到主逻辑门输出。 直流信号连接到主逻辑门的输入，使得当输入状态变化时，主逻辑门的输出变化。 分流器连接到有源输入端，并且能够响应于有效输入电压相对于中性输入电压从正变化到负值而能够切换到电路中和从电路输出，反之亦然。 分流器还被布置成为直流信号提供短路以绕过主逻辑门的输入。

公开(公告)号：US20050007214A1

公开(公告)日：2005-01-13

申请号：US10912160

申请日：2004-08-06

申请人： Bruce Francis Orr

发明人： Bruce Francis Orr

IPC分类号： H03H7/12 ,  H03K17/30 ,  H03K17/68 ,  H04L27/00 ,  H04L27/26 ,  H04M11/06 ,  H03H7/01

CPC分类号： H03K17/30 ,  H03K17/68 ,  H04L27/0002 ,  H04L27/2601 ,  H04M11/062

摘要： An ADSL/POTS filter includes a switchable impedance 220 which is inserted on the low frequency side of filter 2, 3, 5, 6, 7. The impedance is switched by switch 209 which is controlled by a line sensor so that the impedance is switched into the circuit when the telephone 44 goes off-hook.

摘要翻译： ADSL / POTS滤波器包括插入在滤波器2,3,5,6,7的低频侧的可切换阻抗220.阻抗由开关209切换，开关209由线传感器控制，使得阻抗被切换 当电话44摘机时进入电路。

公开(公告)号：US20030112053A1

公开(公告)日：2003-06-19

申请号：US10289444

申请日：2002-11-07

发明人： Rolf Reber ,  Michael Ludwig

IPC分类号： H03K017/60

CPC分类号： H03K17/68

摘要： A semiconductor circuit for switching and/or amplitude influencing of an analog desired signal fed to the input (EA, AE) of the circuit (1) to an analog actual signal in the high-frequency range generated by the circuit at the output (AE, EA). The circuit (1) has two bipolar transistors (T1, T2) arranged with respect to one another such that the collector terminal (K1, K2) of the one bipolar transistor (T1, T2) is connected with the emitter terminal (E2, E1) of the other bipolar transistor (T2, T1) and vice-versa. The bipolar transistors (T1, T2) are controlled by a control quantity fed to the base terminals (B1, B2) of the transistors (T1, T2).

摘要翻译： 一种半导体电路，用于将馈送到电路（1）的输入（EA，AE）的模拟期望信号切换和/或振幅影响为由输出端（AE）产生的高频范围内的模拟实际信号 ，EA）。 电路（1）具有相对于彼此布置的两个双极晶体管（T1，T2），使得一个双极晶体管（T1，T2）的集电极端子（K1，K2）与发射极端子（E2，E1 ）的另一个双极晶体管（T2，T1），反之亦然。 双极晶体管（T1，T2）由馈送到晶体管（T1，T2）的基极（B1，B2）的控制量控制。

公开(公告)号：US5032739A

公开(公告)日：1991-07-16

申请号：US353483

申请日：1989-05-18

申请人： Young-san Koh

发明人： Young-san Koh

IPC分类号： H03K17/00 ,  H03K17/14 ,  H03K17/16 ,  H03K17/62 ,  H03K17/68

CPC分类号： H03K17/68 ,  H03K17/005 ,  H03K17/14 ,  H03K17/16 ,  H03K17/62

摘要： An input selection circuit using a plurality of bidirectional analogue switches disclosed which is constituted such that a feedback circuit is installed between the input terminals of a bidirectional analogue switch device and the output terminal of an amplifier, characterized in that the directional conduction deviations of bidirectional switches provided in the bidirectional switch device can be reduced during the transmission of signals. Therefore, the input selection circuit according to the present invention can reduce the signal distortions due to the directional conduction deviations.

摘要翻译： 一种使用公开的多个双向模拟开关的输入选择电路，其构成为使得反馈电路安装在双向模拟开关器件的输入端子与放大器的输出端子之间，其特征在于双向开关的方向导通偏差 在双向开关装置中提供的信号可以在传输过程中减少。 因此，根据本发明的输入选择电路可以减少由于方向传导偏差引起的信号失真。

公开(公告)号：US4835652A

公开(公告)日：1989-05-30

申请号：US215690

申请日：1988-07-06

申请人： William W. Billings ,  David A. Fox

发明人： William W. Billings ,  David A. Fox

IPC分类号： G01R19/155 ,  G05F1/10 ,  H02H3/087 ,  H02H7/20 ,  H02J1/10 ,  H02M3/155 ,  H03G3/30

CPC分类号： H02H3/087 ,  H02J1/10 ,  H03K17/68 ,  H03K2217/0009 ,  H03K2217/0027

摘要： A bi-directional DC power controller is provided with a bi-directional DC switch connected between a pair of terminals for connection to a pair of line power conductors. A first difference amplifier is connected to receive voltages at these terminals and to produce an output voltage signal which is proportional to the difference in voltages between these terminals when the voltage at one of the terminals is greater than the voltage at the other terminal, and is constant when the voltage at the second terminal is greater than the voltage at the first terminal. A second differential amplifier also receives voltage signals from these terminals and produces an output voltage signal which is proportional to the difference in voltages between the terminals when the voltage at the second terminal is greater than the voltage at the first terminal, and which is constant when the voltage at the first terminal is greater than the voltage at the second terminal. The outputs of the difference amplifiers are combined to produce a control voltage signal having a magnitude that is proportional to the absolute value of the difference between voltages at the terminals. This control signal is used to control the operation of the bi-directional DC switch.