公开(公告)号：US20070252571A1

公开(公告)日：2007-11-01

申请号：US11683436

申请日：2007-03-08

申请人： KAZUNARI HIRATA ,  TADAAKI SATOH ,  MASAHIRO NAGATA

发明人： KAZUNARI HIRATA ,  TADAAKI SATOH ,  MASAHIRO NAGATA

IPC分类号： G05F3/02 ,  G01R19/00

CPC分类号： G01R31/31924

摘要： There is provided an electric power applying circuit for applying a direct current power to a load. The electric power applying circuit includes an output buffer that (i) is supplied with, as power source voltages, positive and negative high voltages which are determined in accordance with a range of an applied voltage which is to be applied to the load, (ii) generates a voltage in accordance with an input voltage, within a range defined by the power source voltages, and (iii) applies the generated voltage to the load, a main amplifier that amplifies a voltage input thereto to generate the input voltage, and inputs the generated input voltage into the output buffer, wherein the main amplifier exhibits a higher accuracy in terms of voltage generation than the output buffer, and a floating power source that generates positive and negative floating voltages by using, as a reference, a voltage determined in accordance with a voltage output from the output buffer, and supplies the generated positive and negative floating voltages to the main amplifier as power source voltages thereof, wherein a difference in voltage between the positive and negative floating voltages is smaller than a difference in voltage between the positive and negative high voltages.

摘要翻译： 提供了一种向负载施加直流电力的电力施加电路。 电力施加电路包括输出缓冲器，其（i）被提供作为电源电压，根据施加到负载的施加电压的范围确定的正和负高电压，（ii ）在由电源电压限定的范围内根据输入电压产生电压，并且（iii）将所产生的电压施加到负载，放大输入电压以产生输入电压的主放大器，以及输入 将产生的输入电压输入到输出缓冲器中，其中主放大器在电压产生方面表现出比输出缓冲器更高的精度;以及浮动电源，其通过使用以下方式确定的电压来产生正和负浮置电压： 根据来自输出缓冲器的电压输出，并将产生的正和负浮动电压作为其电源电压提供给主放大器， 控制正，负浮动电压之间的电压差小于正电压和负电压之间的电压差。

公开(公告)号：US20070268022A1

公开(公告)日：2007-11-22

申请号：US11748496

申请日：2007-05-15

申请人： MASAHIRO NAGATA

发明人： MASAHIRO NAGATA

IPC分类号： G01R31/08

CPC分类号： G01R31/31924 ,  G01R31/3004

摘要： There is provided a measurement circuit including a main amplifier that generates a direct voltage in accordance with an input voltage and applies the generated voltage to a device under test, a feedback element that feeds back the direct voltage to the main amplifier and controls the direct voltage generated from the main amplifier to a voltage according to the input voltage, a current detecting circuit that outputs a detecting voltage according to a current value of the direct current, and a clamping circuit that restricts the current value of the direct current output from the main amplifier, in which the clamping circuit includes a first limiting-voltage output section that outputs a limiting voltage according to a limiting value of the direct current, a first bias generating section that generates a bias voltage making use of the input voltage as a reference voltage based on a magnitude relation between the limiting voltage and the detecting voltage, and a limiting-current supplying element that is provided between a connecting point between the main amplifier and the feedback element and the first bias generating section and supplies a limiting current restricting the direct current to the device under test via the feedback element in accordance with a voltage difference between a voltage in the connecting point and the bias voltage.

摘要翻译： 提供了一种测量电路，包括：主放大器，其根据输入电压产生直流电压，并将产生的电压施加到被测器件;将反馈元件反馈到主放大器的直流电压并控制直流电压 从主放大器产生的电压根据输入电压的电压;电流检测电路，其根据直流电的当前值输出检测电压;以及钳位电路，其限制从主电源输出的直流电流的电流值 放大器，其中钳位电路包括根据直流电流的极限值输出极限电压的第一极限电压输出部分，产生利用输入电压的偏置电压作为参考电压的第一偏置产生部分 基于限制电压和检测电压之间的大小关系，以及极限电流供应 所述元件设置在所述主放大器和所述反馈元件之间的连接点与所述第一偏置产生部之间，并且通过所述反馈元件根据所述电压之间的电压差向所述反馈元件提供限制所述直流电流的限制电流 在连接点和偏置电压。