Inductance L load actuating apparatus
    11.
    发明授权
    Inductance L load actuating apparatus 失效
    电感L负载致动装置

    公开(公告)号:US5883483A

    公开(公告)日:1999-03-16

    申请号:US743878

    申请日:1996-11-06

    CPC分类号: H02P8/34 H02P8/00

    摘要: In an actuation circuit for a stepping motor, one switching element and its associated coil are connected at one connecting point, while the other switching element and its associated coil are connected at another connecting point. A pair of switching circuits and a pair of rectifying circuits are provided between two connecting points. When one of switching elements is changed from an ON condition to an OFF condition, the voltage difference between two connecting points allows the current to flow in a designated direction through the switching circuit and the rectifying circuit combined, thereby releasing the energy stored in the coils.

    摘要翻译: 在用于步进电机的驱动电路中,一个开关元件及其相关联的线圈在一个连接点处连接,而另一个开关元件及其相关联的线圈在另一个连接点处连接。 一对开关电路和一对整流电路设置在两个连接点之间。 当开关元件中的一个从接通状态变为关闭状态时,两个连接点之间的电压差允许电流通过开关电路和整流电路在指定方向上流动,从而释放存储在线圈中的能量 。

    Temperature detecting using a forward voltage drop across a diode
    12.
    发明授权
    Temperature detecting using a forward voltage drop across a diode 失效
    使用二极管两端的正向压降进行温度检测

    公开(公告)号:US5918982A

    公开(公告)日:1999-07-06

    申请号:US927182

    申请日:1997-09-11

    CPC分类号: G01K7/01

    摘要: A temperature detecting circuit detects the rise of ambient temperature, using a forward voltage drop across a diode. The temperature detecting circuit comprises a temperature detecting diode whose cathode is grounded, a first constant current supply device connected with the anode of the temperature detecting diode, for supplying a constant current Ia to the temperature-detecting diode, a rectifying diode whose cathode is connected with the anode of the temperature detecting diode, a second constant current supply device connected with the anode of the rectifying diode, for supplying a constant current Ib to the temperature-detecting diode, a comparator, and a transistor. When the voltage at the anode of the temperature-detecting diode is lower than a reference voltage, the comparator produces a high-level signal indicative of overheating. In response to this, the transistor shorts the anode of the rectifying diode to ground potential to supply the constant current Ib from the second constant current supply device directly to ground potential.

    摘要翻译: 温度检测电路使用二极管两端的正向压降来检测环境温度的上升。 温度检测电路包括阴极接地的温度检测二极管,与温度检测二极管的阳极连接的第一恒流源装置,用于向温度检测二极管提供恒定电流Ia;其阴极连接的整流二极管 与温度检测二极管的阳极连接的第二恒流源装置与整流二极管的阳极连接,用于向温度检测二极管提供恒定电流Ib,比较器和晶体管。 当温度检测二极管的阳极电压低于参考电压时,比较器产生指示过热的高电平信号。 响应于此,晶体管将整流二极管的阳极短路到地电位,以将恒定电流Ib从第二恒定电流供应装置直接提供给地电位。

    Load actuation circuit
    13.
    发明授权
    Load actuation circuit 失效
    负载驱动电路

    公开(公告)号:US5999041A

    公开(公告)日:1999-12-07

    申请号:US857881

    申请日:1997-05-16

    IPC分类号: H03K17/082 H03K17/08

    CPC分类号: H03K17/0822

    摘要: An output MOS transistor and a current-detecting MOS transistor are connected commonly at their drains and gates. A gate voltage is fed to the gates of these transistors via signal lines. When the voltage of an output terminal is increased in response to excessive load current, a current-mirror circuit consisting of first and second transistors pulls in current from the signal line to reduce the gate voltage. Thus, the output current of output MOS transistor is limited within a predetermined level. Furthermore, a diode, provided in the signal line, produces a voltage drop equivalent to the base-emitter voltage of first transistor. By the function of this diode, the gate-source voltage of output MOS transistor is equalized with the gate-source voltage of current-detecting MOS transistor. As a result, the same operating point can be set for the output transistor and the current-detecting transistor.

    摘要翻译: 输出MOS晶体管和电流检测MOS晶体管通常连接在其漏极和栅极。 栅极电压通过信号线馈送到这些晶体管的栅极。 当输出端子的电压响应于过大的负载电流而增加时,由第一和第二晶体管组成的电流镜电路从信号线引出电流以降低栅极电压。 因此,输出MOS晶体管的输出电流被限制在预定的水平。 此外,设置在信号线中的二极管产生等效于第一晶体管的基极 - 发射极电压的电压降。 通过该二极管的功能,输出MOS晶体管的栅极 - 源极电压与电流检测MOS晶体管的栅极 - 源极电压相等。 结果,可以为输出晶体管和电流检测晶体管设置相同的工作点。

    DC power supply with output voltage detection and control
    14.
    发明授权
    DC power supply with output voltage detection and control 失效
    直流电源具有输出电压检测和控制

    公开(公告)号:US06531855B2

    公开(公告)日:2003-03-11

    申请号:US09892534

    申请日:2001-06-28

    IPC分类号: G05F140

    CPC分类号: G05F1/575 Y10S323/901

    摘要: A series circuit including a capacitor and a resistor for detecting variation of the output voltage of dc power supply is further provided. During startup, a charge current corresponding to the rising rate of the output voltage flows through the series circuit. This reduces the base current of the power transistor to suppress the rising rate to suppress overshoot and undershoot. A clamp circuit is provided to the differential amplifier for detecting the error voltage. This prevents the saturation in the differential amplifier or limit the voltage variation amplitude to accelerate the operation of the operational amplifier and suppress undershoot. A delay circuit for disabling to driving circuit for the power transistor for the initial interval may be further provided to suppress the initial rapid rise of the output voltage.

    摘要翻译: 还提供一种包括用于检测直流电源的输出电压的变化的电容器和电阻器的串联电路。 在启动期间,与输出电压的上升率相对应的充电电流流过串联电路。 这降低了功率晶体管的基极电流,以抑制上升速率以抑制过冲和下冲。 钳位电路提供给差分放大器,用于检测误差电压。 这样可以防止差分放大器的饱和或者限制电压变化幅度,从而加速运算放大器的工作并抑制下冲。 可以进一步提供用于禁止用于初始间隔的功率晶体管的驱动电路的延迟电路,以抑制输出电压的初始快速上升。

    Charge pump circuit
    15.
    发明授权
    Charge pump circuit 失效
    电荷泵电路

    公开(公告)号:US6075403A

    公开(公告)日:2000-06-13

    申请号:US17495

    申请日:1998-02-02

    IPC分类号: H02M3/07 G05F1/10

    CPC分类号: H02M3/073

    摘要: A charge pump circuit comprises a plurality of capacitors arranged to charge and discharge for generating a charged-up voltage. An oscillation circuit generates a clock signal to be applied to the plurality of capacitors to alternately charge and discharge these charge-up capacitors. A monitoring circuit detects electrical potentials on at least two of the charge-up capacitors and controls the clock signal. An oscillating condition of the oscillation circuit based on the electrical potentials on the at least two of the charge-up capacitors.

    摘要翻译: 电荷泵电路包括多个电容器,其布置成充电和放电以产生充电电压。 振荡电路产生施加到多个电容器的时钟信号,以交替地对这些充电电容器进行充电和放电。 监控电路检测至少两个充电电容器的电位并控制时钟信号。 基于至少两个充电电容器上的电位的振荡电路的振荡条件。

    Driving apparatus for an inductive load
    16.
    发明授权
    Driving apparatus for an inductive load 失效
    用于感性负载的驱动装置

    公开(公告)号:US5977756A

    公开(公告)日:1999-11-02

    申请号:US042191

    申请日:1998-03-13

    摘要: A first switching element opens or closes a power supply route of an inductive load in accordance with a first driving signal. A clamping element prevents a voltage ot the power supply route from exceeding a first clamp voltage when the power supply route is opened. A second switching element opens or closes the current flow route, provided in parallel with the power supply route, in response to a second driving signal. A rectifying means is responsive to the second switching element to change the clamp voltage to a second clamp voltage when the first switching element is turned off. The second switching element is constituted by a MOSFET. A charging element charges a capacitor of MOSFET.

    摘要翻译: 第一开关元件根据第一驱动信号打开或关闭感性负载的电源路径。 当供电路径打开时,夹紧元件防止电源线路上的电压超过第一钳位电压。 第二开关元件响应于第二驱动信号而打开或关闭与电源路径并联提供的电流流动路径。 当第一开关元件关闭时,整流装置响应于第二开关元件将钳位电压改变为第二钳位电压。 第二开关元件由MOSFET构成。 充电元件对MOSFET的电容器充电。

    Semiconductor diffused resistor
    18.
    发明授权
    Semiconductor diffused resistor 失效
    半导体扩散电阻

    公开(公告)号:US5661332A

    公开(公告)日:1997-08-26

    申请号:US378273

    申请日:1995-01-26

    CPC分类号: H01L29/8605

    摘要: A diffused resistor capable of suppressing variation of characteristics caused by leakage of current occurring under high-temperature conditions. An N-type layer is epitaxially grown on a P-type substrate, and an N-type resistor island isolated by a P-type isolation region is formed. A P-type diffused resistor is formed in the island. An N-type region of high impurity concentration is disposed in close proximity to the high-potential end of the P-type diffused resistor. An electrode is brought into contact with not only the high-potential end but also the N-type high-impurity concentration region through the same contact hole. Thus, a parasitic transistor, which is formed from the P-type diffused resistor, the N-type resistor island and the P-type substrate (P-type isolation region), can be prevented from turning on with a minimal increase of the element area.

    摘要翻译: 一种扩散电阻器,其能够抑制由高温条件下发生的电流泄漏引起的特性变化。 在P型衬底上外延生长N型层,并且形成由P型隔离区隔离的N型电阻器岛。 岛内形成P型扩散电阻。 高杂质浓度的N型区域靠近P型扩散电阻器的高电位端设置。 电极不仅通过相同的接触孔与高电位端而且与N型高杂质浓度区域接触。 因此,可以防止由P型扩散电阻器,N型电阻岛和P型衬底(P型隔离区域)形成的寄生晶体管以元件的最小增加而导通 区。

    Driving apparatus for cross-coil type analog indicating instrument
having reduced ripple
    19.
    发明授权
    Driving apparatus for cross-coil type analog indicating instrument having reduced ripple 失效
    交叉线圈型模拟指示仪的驱动装置具有减小的纹波

    公开(公告)号:US5313155A

    公开(公告)日:1994-05-17

    申请号:US885730

    申请日:1992-05-19

    CPC分类号: G01R5/16 G01R7/06

    摘要: A driving apparatus used for an analog indicating instrument having a pair of cross coils comprises a pulse signal generating device for generating a pulse signal having a frequency proportional to a quantity to be measured, a frequency-voltage conversion device for generating a ripple voltage proportional to the frequency of the pulse, holding a mean voltage of the ripple voltage as an analog voltage while restraining the ripple, and controlling the analog voltage so as to change following a mean value of the ripple voltage, thereby to supply the analog voltage, and driving devices for supplying a current in accordance with the analog voltage to the cross coils so as to drive these cross coils. The driving apparatus has effects on improving responsibility of frequency-voltage conversion operation in a low frequency region and reducing the deflection of a pointer of an instrument by restraining the ripples.

    摘要翻译: 用于具有一对交叉线圈的模拟指示仪的驱动装置包括:脉冲信号发生装置,用于产生具有与被测量成比例的频率的脉冲信号;频率电压转换装置,用于产生与 脉冲的频率,在抑制纹波的同时将纹波电压的平均电压保持为模拟电压,并且控制模拟电压以随着纹波电压的平均值而改变,从而提供模拟电压,并驱动 用于根据模拟电压向交叉线圈提供电流以驱动这些交叉线圈的装置。 驱动装置具有改善低频区域中的频率 - 电压转换操作的责任并通过抑制波纹来减少仪器的指示器的偏转的效果。

    Groove machining method by means of water jet, heat exchanger member, and heat exchanger
    20.
    发明授权
    Groove machining method by means of water jet, heat exchanger member, and heat exchanger 有权
    通过喷水,换热器构件和热交换器进行槽加工

    公开(公告)号:US07972198B2

    公开(公告)日:2011-07-05

    申请号:US11680985

    申请日:2007-03-01

    IPC分类号: B24B1/00

    摘要: There is provided a groove machining method by means of water jet which machines grooves by means of a water jet device including injection nozzles for injecting a water jet on a face to be machined of a member to be machined, including a step of disposing protection members which are more resistive against an injection power of the water jet than the member to be machined so as to cover a portion which is a part of the face to be machined, and on which grooves are not to be formed in order to form ends of the machined grooves in a travel direction of the injection nozzles inside an outline of the face to be machined, and a step of moving the nozzles across the protection members and the face to be machined while injecting the water jet at a predetermined injection power from the injection nozzles.

    摘要翻译: 提供了一种通过水喷射的凹槽加工方法,该方法通过水喷射装置对水槽进行加工,该喷水装置包括用于将喷嘴喷射在待加工构件的被加工面上的喷嘴,包括设置保护构件 其比待加工的构件更能抵抗水射流的喷射力,以覆盖作为被加工面的一部分的部分,并且在其上不形成槽以形成端部 在被加工面的轮廓内的注射喷嘴的行进方向上的机械加工凹槽,以及将喷嘴横跨保护构件和待加工面喷射的步骤,同时以预定的喷射功率从 喷嘴。