公开(公告)号：US20100007327A1

公开(公告)日：2010-01-14

申请号：US12171296

申请日：2008-07-11

申请人： HIROKI ANDOH ,  KUNIHIRO MATSUURA ,  SATOSHI KODERA

发明人： HIROKI ANDOH ,  KUNIHIRO MATSUURA ,  SATOSHI KODERA

IPC分类号： G01R19/00

CPC分类号： G01R31/31924 ,  G01R15/002 ,  G01R15/08 ,  G01R31/3008

摘要： Provided is a measurement apparatus that measures a current flowing through a load, including a power supply section that outputs a current supplied to the load; a current measuring section that measures a load current flowing between the load and the power supply section; a switch that is connected in parallel with the current measuring section between the load and the power supply section; and a control section that disconnects the switch during measurement of the load current and connects the switch when the load current falls outside of a predetermined reference range.

摘要翻译： 提供了一种测量流过负载的电流的测量装置，包括：输出供给到负载的电流的电源部; 电流测量部，其测量在负载和电源部之间流动的负载电流; 与负载和电源部之间的电流测量部并联连接的开关; 以及控制部，其在测量负载电流期间断开开关，并且当负载电流超出预定参考范围时连接开关。

公开(公告)号：US20080111539A1

公开(公告)日：2008-05-15

申请号：US11939947

申请日：2007-11-14

申请人： Satoshi Kodera

发明人： Satoshi Kodera

IPC分类号： G01R1/28 ,  G01R19/25 ,  H03L5/00

CPC分类号： G01R19/0092 ,  G01R31/31924

摘要： A direct current measuring apparatus includes a voltage generating part generating a voltage to be applied to a load being a measuring object; a current limiting part limiting a current flowing in the load to a set value; and an output terminal connected to the load. The current limiting part includes a D/A converter, a positive side limiting circuit, a D/A converter and a negative side limiting circuit. The positive side limiting circuit includes a negative feedback loop. The negative feedback loop includes a capacitor and a buffer circuit besides the feedback resistance. An output of the positive side limiting circuit positive side limiting circuit is connected to a non-inverting input terminal of the main amplifier through a diode.

摘要翻译： 直流测量装置包括产生施加到作为测量对象的负载的电压的电压产生部件; 限制在负载中流动的电流到设定值的限流部分; 以及连接到负载的输出端子。 限流部分包括D / A转换器，正极限制电路，D / A转换器和负侧限制电路。 正侧限制电路包括负反馈回路。 除了反馈电阻之外，负反馈回路还包括电容器和缓冲电路。 正侧限制电路正侧限制电路的输出通过二极管连接到主放大器的非反相输入端子。

公开(公告)号：US20080036539A1

公开(公告)日：2008-02-14

申请号：US11777296

申请日：2007-07-13

申请人： SATOSHI KODERA

发明人： SATOSHI KODERA

IPC分类号： H03F3/18

CPC分类号： G01R31/31924 ,  H03F3/3018 ,  H03F3/3022

摘要： Power amplifier circuit outputs an output voltage corresponding to an input voltage supplied, and includes positive and negative-side output units including a positive or negative-side output resistor and a positive or negative-side transistor having its source terminal connected to one end of the positive or negative-side output resistor to make a current corresponding to a voltage supplied to its gate terminal flow to the positive or negative-side output resistor, positive and negative-side bias generating units which generate a positive or negative-side bias voltage corresponding to the input voltage, and positive and negative-side control units which control the voltage to be applied to the gate terminal of the positive or negative-side transistor such that the positive or negative-side bias voltage and source voltage of the positive or negative-side transistor become generally equal, and the voltage at connection node between the positive and negative-side output units is output as the output voltage.

摘要翻译： 功率放大器电路输出与所提供的输入电压相对应的输出电压，并且包括正极和负极侧输出单元，其包括正或负侧输出电阻器以及正或负侧晶体管，其源极端子连接到 正或负侧输出电阻器，以使与其栅极端子的电压相对应的电流流到正或负侧输出电阻器，正负侧偏置产生单元，其产生相应的正或负侧偏置电压 控制施加于正侧或负侧晶体管的栅极端子的电压的正侧和负侧控制单元，使正或负侧偏置电压和正或负极的源极电压 侧晶体管变得大体上相等，并且正负侧输出单元之间的连接节点处的电压被输出a 的输出电压。

公开(公告)号：US07277303B2

公开(公告)日：2007-10-02

申请号：US11517745

申请日：2006-09-08

申请人： Hironori Tanaka ,  Kunihiro Matsuura ,  Satoshi Kodera

发明人： Hironori Tanaka ,  Kunihiro Matsuura ,  Satoshi Kodera

IPC分类号： H02M7/00

CPC分类号： H02J1/10 ,  Y10T307/549

摘要： There is provided a power source apparatus that includes a master circuit and a slave circuit provided in parallel and outputs an electric current that adds an electric current output from the master circuit and an electric current output from the slave circuit as a power-supply current. The master circuit includes: a main circuit side output section operable to output an electric current depending on a given voltage; a main circuit side reference power source operable to generate a reference voltage corresponding to a power-supply voltage that the power source apparatus is to output; and a main circuit side control section operable to supply the voltage corresponding to the reference voltage to the main circuit side output section in order to control the current output from the main circuit side output section. The slave circuit includes a sub-circuit side output section operable to receive a voltage based on the electric current output from the main circuit side output section and to output an electric current depending on the voltage, the sub-circuit side output section having the same characteristic as that of the main circuit side output section.

公开(公告)号：US20120049893A1

公开(公告)日：2012-03-01

申请号：US13219566

申请日：2011-08-26

申请人： Satoshi Kodera ,  Takahiko Shimizu

发明人： Satoshi Kodera ,  Takahiko Shimizu

IPC分类号： H03K5/22

CPC分类号： G01R31/2839

摘要： A voltage source generates a power supply voltage VOUT stabilized such that it matches the voltage level that corresponds to a reference voltage VREF, and supplies the power supply voltage to a DUT. A current detection circuit generates a detection voltage Vm that corresponds to an output current IOUT that flows through the DUT. In the initial state, the reference voltage VREF generated by a reference voltage generating circuit is set to an initial voltage level that corresponds to an input voltage VIN. After the output current IOUT flows, the reference voltage transits to a first voltage level VL1 obtained by shifting the initial voltage level by a first voltage step that corresponds to the detection voltage Vm. Subsequently, the reference voltage VREF transits to a second voltage level VL2 obtained by shifting the initial voltage level by a second voltage step that corresponds to the detection voltage Vm.

摘要翻译： 电压源产生稳定的电源电压VOUT，使其与对应于参考电压VREF的电压电平相匹配，并将电源电压提供给DUT。 电流检测电路产生对应于流过DUT的输出电流IOUT的检测电压Vm。 在初始状态下，将由基准电压产生电路产生的基准电压VREF设定为对应于输入电压VIN的初始电压电平。 在输出电流IOUT流过之后，参考电压转换到通过将初始电压电平移位到与检测电压Vm相对应的第一电压阶跃而获得的第一电压电平VL1。 随后，参考电压VREF转变到通过将初始电压电平移位到与检测电压Vm相对应的第二电压阶跃而获得的第二电压电平VL2。

公开(公告)号：US20090015221A1

公开(公告)日：2009-01-15

申请号：US12122642

申请日：2008-05-16

申请人： Satoshi Kodera

发明人： Satoshi Kodera

IPC分类号： G05F1/565

CPC分类号： G01R31/2841 ,  G01R31/31924

摘要： A voltage generating apparatus generates an output voltage based on an input voltage. A voltage generator includes a first operational amplifier operative to receive the input voltage and a feedback voltage proportional to the output voltage. The voltage generator regulates the output voltage so that a virtual short circuit is produced in the first operational amplifier. An output capacitor smoothes the output voltage generated by the voltage generating apparatus. A sense signal generator detects a current flowing in the output capacitor and generates a sense signal proportional to the current detected. An adder-subtractor circuit superimposes the sense signal on at least one of the input and the output of the first operational amplifier.

摘要翻译： 电压产生装置基于输入电压产生输出电压。 电压发生器包括可操作以接收输入电压的第一运算放大器和与输出电压成比例的反馈电压。 电压发生器调节输出电压，从而在第一运算放大器中产生虚拟短路。 输出电容平滑由电压产生装置产生的输出电压。 感测信号发生器检测在输出电容器中流动的电流，并产生与检测到的电流成正比的感测信号。 加法器 - 减法器电路将感测信号叠加在第一运算放大器的输入和输出中的至少一个上。

公开(公告)号：US07446554B2

公开(公告)日：2008-11-04

申请号：US11939947

申请日：2007-11-14

申请人： Satoshi Kodera

发明人： Satoshi Kodera

IPC分类号： G01R31/26

CPC分类号： G01R19/0092 ,  G01R31/31924

摘要： A direct current measuring apparatus includes a voltage generating part generating a voltage to be applied to a load being a measuring object; a current limiting part limiting a current flowing in the load to a set value; and an output terminal connected to the load. The current limiting part includes a D/A converter, a positive side limiting circuit, a D/A converter and a negative side limiting circuit. The positive side limiting circuit includes a negative feedback loop. The negative feedback loop includes a capacitor and a buffer circuit besides the feedback resistance. An output of the positive side limiting circuit positive side limiting circuit is connected to a non-inverting input terminal of the main amplifier through a diode.

摘要翻译： 直流测量装置包括产生施加到作为测量对象的负载的电压的电压产生部件; 限制在负载中流动的电流到设定值的限流部分; 以及连接到负载的输出端子。 限流部分包括D / A转换器，正极限制电路，D / A转换器和负侧限制电路。 正侧限制电路包括负反馈回路。 除了反馈电阻之外，负反馈回路还包括电容器和缓冲电路。 正侧限制电路正侧限制电路的输出通过二极管连接到主放大器的非反相输入端子。

公开(公告)号：US07119547B2

公开(公告)日：2006-10-10

申请号：US10776030

申请日：2004-02-10

申请人： Kunihiro Matsuura ,  Hiroki Ando ,  Hironori Tanaka ,  Yasuhiro Urabe ,  Satoshi Kodera

发明人： Kunihiro Matsuura ,  Hiroki Ando ,  Hironori Tanaka ,  Yasuhiro Urabe ,  Satoshi Kodera

IPC分类号： G01R31/02 ,  G01R31/00

CPC分类号： H03F3/3018 ,  G01R31/2851 ,  G01R31/31924 ,  H03F1/342

摘要： A testing apparatus includes a first power supply unit and first and second coaxial cables. The first power supply supplies current to a device under test. The first coaxial cable includes a first internal conductor and a first external conductor. The second coaxial cable includes a second internal conductor and a second external conductor. The first internal conductor and the second external conductor conducts current from the first power supply unit to the device under test. The second internal conductor and the first external conductor conducts current from the device under test to the first power supply unit.

摘要翻译： 测试装置包括第一电源单元和第一和第二同轴电缆。 第一个电源向被测设备供电。 第一同轴电缆包括第一内部导体和第一外部导体。 第二同轴电缆包括第二内部导体和第二外部导体。 第一内部导体和第二外部导体将电流从第一电源单元传导到被测器件。 第二内部导体和第一外部导体将电流从被测器件传导到第一个电源单元。

公开(公告)号：US20060116843A1

公开(公告)日：2006-06-01

申请号：US11081803

申请日：2005-03-16

申请人： Satoshi Kodera

发明人： Satoshi Kodera

IPC分类号： G01M19/00

CPC分类号： G01R31/31924 ,  G01R31/31721

摘要： A power circuit which can reduce power consumption. More specifically, a testing apparatus for testing an electronic device which includes: a pattern generation unit for generating a test pattern which is supplied to the electronic device; a power supply circuit for supplying power to the electronic device; and a decision unit for deciding pass/fail of the electronic device based on an output signal output from the electronic device, wherein the power supply circuit has: a voltage source for generating a predetermined input voltage to be applied to the electronic device; a power device for supplying the power to the electronic device based on the input voltage generated by the voltage source; a power supply for supplying drive power of the power device; and a voltage control unit for controlling a drive voltage applied by the power supply to the power device based on the power output from the power device.

摘要翻译： 电源电路，可以降低功耗。 更具体地说，一种用于测试电子设备的测试设备，包括：图案生成单元，用于产生提供给电子设备的测试图案; 用于向电子设备供电的电源电路; 以及决定单元，用于基于从电子设备输出的输出信号来决定电子设备的通过/失败，其中电源电路具有：用于产生要施加到电子设备的预定输入电压的电压源; 电源装置，用于基于由电压源产生的输入电压向电子装置供电; 用于提供动力装置的驱动力的电源; 以及电压控制单元，用于基于从功率器件输出的功率来控制对电力设备的电源施加的驱动电压。

公开(公告)号：US20050174105A1

公开(公告)日：2005-08-11

申请号：US10776030

申请日：2004-02-10

申请人： Kunihiro Matsuura ,  Hiroki Ando ,  Hironori Tanaka ,  Yasuhiro Urabe ,  Satoshi Kodera

发明人： Kunihiro Matsuura ,  Hiroki Ando ,  Hironori Tanaka ,  Yasuhiro Urabe ,  Satoshi Kodera

IPC分类号： G01R1/00 ,  G01R31/28 ,  G01R31/319 ,  H03F1/34 ,  H03F3/30

CPC分类号： H03F3/3018 ,  G01R31/2851 ,  G01R31/31924 ,  H03F1/342

摘要： A testing apparatus includes a first power supply unit for generating a current to be supplied to the device under test and first and second coaxial cables through which the current generated by the first power supply unit is supplied to the device under test, wherein the first power supply unit includes a current detecting unit for detecting an amount of a voltage drop when the current generated by the first power supply unit passes through a predetermined resistor and a current controlling unit for controlling the current being supplied to the device under test in response to the amount of the voltage drop detected by the current detecting unit, the first coaxial cable includes a first internal conductor for conducting the current from the first power supply unit towards the device under test and a first external conductor provided around the first internal conductor with an insulator interposed therebetween for conducting the current from the device under test towards the first power supply unit, and the second coaxial cable includes a second internal conductor for conducting the current from the device under test towards the first power supply unit and a second external conductor around the first internal conductor with an insulator interposed therebetween for conducting the current from the first power supply unit towards the device under test.

摘要翻译： 测试装置包括：第一电源单元，用于产生要供给到被测器件的电流;以及第一和第二同轴电缆，由第一电源单元产生的电流通过该第一和第二同轴电缆提供给被测器件，其中第一功率 供电单元包括电流检测单元，用于当由第一电源单元产生的电流通过预定电阻器时检测电压降的量;以及电流控制单元，用于响应于所述电流控制单元控制供应给被测设备的电流 由电流检测单元检测的电压降的量，第一同轴电缆包括用于将来自第一电源单元的电流传导到被测器件的第一内部导体，以及设置在第一内部导体周围的第一外部导体，绝缘体 插入其间以将来自被测器件的电流传导到第一电源 r供电单元，并且第二同轴电缆包括用于将来自被测器件的电流传导到第一电源单元的第二内部导体，以及围绕第一内部导体的第二外部导体，其间插入绝缘体，用于将电流从 第一个供电单元朝向被测设备。