公开(公告)号：US20220401142A1

公开(公告)日：2022-12-22

申请号：US17781238

申请日：2020-11-30

申请人： CREO MEDICAL LIMITED

发明人： Christopher Paul HANCOCK ,  Ilan DAVIES ,  George HODGKINS

IPC分类号： A61B18/12 ,  H01P3/06 ,  H03K3/335

摘要： A bipolar pulse generating circuit for an electrosurgical generator generates a waveform for electroporation of biological tissue comprising a voltage source connectable to a load via a switching element, and a coaxial transmission line having an inner conductor separated from an outer conductor. The inner conductor first end is connected between the switching element and the voltage source and second end is in an open circuit condition, whereby the line is charged when the switching element is OFF and discharged when the element is ON. The bipolar pulse generating circuit has an output connectable to the load, wherein the first output supports a positive pulse when the line discharges, and a second output supports a negative pulse when the line discharges. The impedance of the coaxial transmission line matches a sum of impedance of the switching element, the load at the first output, and the load at the second output.

公开(公告)号：US20130214966A1

公开(公告)日：2013-08-22

申请号：US13586327

申请日：2012-08-15

申请人： Howard M. Bandell

发明人： Howard M. Bandell

IPC分类号： H03K3/335 ,  G01S13/14

CPC分类号： H03K3/335 ,  G01S7/032 ,  G01S7/282 ,  G01S13/14 ,  G01S13/885

摘要： Circuits and methods for generating a pulse are provided. The generating can comprise receiving at least one trigger input signal with a pulse generating circuit; generating a voltage pulse having a duration less than the avalanche time of a transistor in response to at least a portion of the at least one trigger input signal with the pulse generating circuit; transmitting the voltage pulse from the pulse generating circuit to a terminal of the transistor, the transistor constructed and arranged to be operable in an avalanche mode; and outputting an avalanche pulse from at least one terminal of the transistor in response to the voltage pulse. In some embodiments, the pulse can be transmitted with an antenna in a radar system, and a return pulse can be received and processed.

摘要翻译： 提供用于产生脉冲的电路和方法。 该产生可以包括用脉冲发生电路接收至少一个触发输入信号; 响应于脉冲发生电路的至少一部分触发输入信号产生持续时间小于晶体管的雪崩时间的电压脉冲; 将所述脉冲发生电路的电压脉冲发送到所述晶体管的端子，所述晶体管构造并布置成以雪崩模式工作; 以及响应于所述电压脉冲从所述晶体管的至少一个端子输出雪崩脉冲。 在一些实施例中，脉冲可以用雷达系统中的天线传输，并且可以接收和处理返回脉冲。

公开(公告)号：US08299822B2

公开(公告)日：2012-10-30

申请号：US12987095

申请日：2011-01-08

申请人： Yasuo Shima ,  Katsuya Sonoyama ,  Yoichiro Kobayashi

发明人： Yasuo Shima ,  Katsuya Sonoyama ,  Yoichiro Kobayashi

IPC分类号： H03K3/335

CPC分类号： H03K19/017536

摘要： A driver circuit transmits a signal generated by a signal level generation circuit to a circuit to be measured by transmitting the signal to a output buffer circuit via a circuit (prebuffer circuit) that drives the output buffer circuit and causing the output buffer circuit to drive a transmission line. The driver circuit includes the prebuffer circuit and a replica buffer circuit formed by imitating the prebuffer circuit. The prebuffer circuit and the replica buffer circuit are disposed in parallel. The driver circuit temporarily increases input bias current to be supplied to output-stage transistors of the output buffer circuit on the basis of output current of the replica buffer circuit during transition of an input or output signal.

摘要翻译： 通过驱动输出缓冲电路的电路（预缓冲电路）将信号发送到输出缓冲器电路，驱动电路将由信号电平产生电路产生的信号发送到要测量的电路，并使输出缓冲电路驱动 传输线。 驱动器电路包括预缓冲电路和通过模拟预缓冲器电路形成的复制缓冲电路。 预缓冲电路和复制缓冲电路并联布置。 基于输入或输出信号的转换期间的副本缓冲电路的输出电流，驱动电路暂时增加输出偏置电流以提供给输出缓冲电路的输出级晶体管。

公开(公告)号：US5519348A

公开(公告)日：1996-05-21

申请号：US456576

申请日：1995-06-01

申请人： Satoru Tanoi

发明人： Satoru Tanoi

IPC分类号： G11C11/407 ,  G01R19/15 ,  H03K3/037 ,  H03K3/335

CPC分类号： G01R19/15 ,  G11C2211/5614

摘要： A Schmitt trigger circuit has a field effect transistor coupled between a first fixed potential and an output terminal, and a variable negative resistance circuit coupled between the output terminal and a second fixed potential; the gate of the field effect transistor and the control input of the negative resistance circuit are coupled to the input terminal of the Schmitt trigger circuit; wherein the negative resistance circuit includes a first field effect transistor coupled between the output terminal and the second fixed potential, and a gate coupled to an internal node; a second field effect transistor coupled between the internal node and the second fixed potential, and a gate coupled to the input terminal; and a third field effect transistor coupled between the first fixed potential and the internal node, and a gate coupled to the output terminal.

摘要翻译： 施密特触发电路具有耦合在第一固定电位和输出端之间的场效应晶体管和耦合在输出端和第二固定电位之间的可变负电阻电路; 场效应晶体管的栅极和负电阻电路的控制输入耦合到施密特触发电路的输入端; 其中所述负电阻电路包括耦合在所述输出端和所述第二固定电位之间的第一场效应晶体管和耦合到内部节点的栅极; 耦合在所述内部节点和所述第二固定电位之间的第二场效应晶体管，以及耦合到所述输入端子的栅极; 以及耦合在所述第一固定电位和所述内部节点之间的第三场效应晶体管，以及耦合到所述输出端子的栅极。

公开(公告)号：US4371794A

公开(公告)日：1983-02-01

申请号：US193070

申请日：1980-10-02

申请人： Wolfgang Gollinger

发明人： Wolfgang Gollinger

IPC分类号： G01R31/28 ,  G01R31/3185 ,  G04D7/00 ,  G06F11/267 ,  H01L21/66 ,  H01L21/822 ,  H01L27/04 ,  H03K5/13 ,  H03K3/335

CPC分类号： G04D7/003 ,  G06F11/267

摘要： For the multiple utilization of an external IC terminal, e.g. as input for some options e.g. a testing sequence, there is provided in the IC a special clock generator for three clock signals which are combined in such a way via switches and an inverter that different potentials at the external terminal are "recognized" and converted into different binary signals.

摘要翻译： 对于外部IC终端的多次利用，例如， 作为一些选项的输入，例如 测试序列中，IC中提供了一种用于三个时钟信号的特殊时钟发生器，这些时钟信号以这种方式经由开关和反相器组合，其中外部端子上的不同电位被“识别”并转换为不同的二进制信号。

公开(公告)号：US4115708A

公开(公告)日：1978-09-19

申请号：US708219

申请日：1976-07-23

申请人： Shing-Gong Liu

发明人： Shing-Gong Liu

IPC分类号： H03K3/80 ,  H03K5/01 ,  H03K1/00 ,  H03K3/335

CPC分类号： H03K3/80

摘要： A fast-switching pulse modulator for generating a high-power output pulse in response to a low-power input pulse to apply a bias signal to a microwave apparatus having a high efficiency avalanche semiconductor diode such as a TRAPATT diode or IMPATT diode formed of GaAs. The modulator uses a transistor operating in a switching mode. The transistor is biased to a non-conducting state preferably by a negative D.C. bias voltage and switched to a first conducting mode upon application of the positive input pulse to the transistor. At this first conducting mode the transistor switches current from zero to a low-current level during which no RF output signal exists. Upon application of a threshold signal to, for example, the TRAPATT diode, the diode is triggered into the TRAPATT mode generating thereby an RF output pulse. As the diode is triggered into the TRAPATT mode the transistor is switched to a second conducting mode at a high current level. The rise time of the RF output pulse is fast as a result of the transistor switching from the low-current level to the high-current level.

摘要翻译： 一种快速切换脉冲调制器，用于响应于低功率输入脉冲产生高功率输出脉冲，以将偏置信号施加到具有高效雪崩半导体二极管的微波装置，例如由GaAs形成的TRAPATT二极管或IMPATT二极管 。 调制器使用以开关模式工作的晶体管。 晶体管优选地通过负直流偏置电压被偏置到非导通状态，并且在将正输入脉冲施加到晶体管时切换到第一导通模式。 在该第一导通模式下，晶体管将电流从零切换到低电平，在此期间不存在RF输出信号。 在向例如TRAPATT二极管施加阈值信号时，二极管被触发到TRAPATT模式，从而产生RF输出脉冲。 当二极管触发到TRAPATT模式时，晶体管以高电流电平切换到第二导通模式。 由于晶体管从低电流电平切换到高电流电平，RF输出脉冲的上升时间很快。

公开(公告)号：US3882421A

公开(公告)日：1975-05-06

申请号：US37510073

申请日：1973-06-29

申请人： HONEYWELL INC

发明人： STEIN JEFFREY P

IPC分类号： H03K3/3525 ,  H03K3/335

CPC分类号： H03K3/3525

摘要： A pulse generator circuit using a programmable unijunction transistor produces an output pulse by turning ''''on'''' the transistor by means of an integrator circuit connected across the anode and cathode of the transistor and integrating an output of a power supply while the turn-off of the transistor is achieved by exceeding a normal gate electrode current of the transistor. The augmented gate electrode current is produced by a conductive state of a zener diode to produce a low impedance, high current path to the gate electrode whereby the transistor is turned ''''off'''' shortly after the transistor has been turned ''''on'''' by the integrator. The output pulse is generated by an output transistor responsive to an inductor in the cathode circuit of the unijunction transistor which inductor produces a back voltage with a decrease in the cathode circuit current to turn ''''off'''' the output transistor.

摘要翻译： 使用可编程单结晶体管的脉冲发生器电路通过在晶体管的阳极和阴极之间连接的积分器电路来导通晶体管，从而产生输出脉冲，并且在电源的关断时对电源的输出进行积分 晶体管通过超过晶体管的正常栅电极电流来实现。 扩大的栅电极电流由齐纳二极管的导通状态产生，以产生到栅电极的低阻抗高电流通路，从而在晶体管被积分器“接通”之后不久将晶体管“截止”。 输出脉冲由响应于单结晶体管的阴极电路中的电感器的输出晶体管产生，该电感器产生背电压，阴极电路电流降低以使输出晶体管“截止”。

公开(公告)号：US3719836A

公开(公告)日：1973-03-06

申请号：US3719836D

申请日：1971-06-23

申请人： POSSELL C

发明人： POSSELL C

IPC分类号： G01L9/00 ,  G01L9/02 ,  H03K17/73 ,  H03K3/335

CPC分类号： G01L9/02 ,  G01L9/0058 ,  H03K17/73

摘要： An electrical circuit for energizing a load and continuing to supply current to said load so long as a sensor forming a part of said circuit is subjected to a particular physical condition that permits said sensor to impress a voltage of a predetermined magnitude on the gate of a controlled rectifier. The flow of current from said rectifier to said load is further controlled by a transistor, the base of which is subjected to a pulsating current, with said transistor being conductive only during one of said pulses. The current flow to said load is terminated within the time interval between two of said pulses when said impressed voltage of said gate falls below said predetermined magnitude. The switching function of the circuit consequently has a small deadband.

公开(公告)号：US3549898A

公开(公告)日：1970-12-22

申请号：US3549898D

申请日：1969-07-02

申请人： SYLVANIA ELECTRIC PROD

发明人： NELSON KENNETH W

IPC分类号： H03K3/335 ,  H03K3/00

CPC分类号： H03K3/335

公开(公告)号：US3308308A

公开(公告)日：1967-03-07

申请号：US37363764

申请日：1964-06-09

申请人： TEXAS INSTRUMENTS INC

发明人： BRAY WILLIAM E

IPC分类号： H03K3/335

CPC分类号： H03K3/335