公开(公告)号：US4912451A

公开(公告)日：1990-03-27

申请号：US291649

申请日：1988-12-29

Applicant: Yoshinobu Sugiyama ,  Munecazu Tacano ,  Hajime Soga

Inventor： Yoshinobu Sugiyama ,  Munecazu Tacano ,  Hajime Soga

IPC: H01L43/06

CPC classification number: H01L43/065

Abstract: The heterojunction magnetic field sensor is basically a heterojunction structure forming a two-dimensional electron gas layer having a high carrier mobility at the junction portion of at least two different kinds of semiconductor layers having a different band gap, respectively, and further, at least one semiconductor layer having a quantum well structure is provided adjacent to and in contact with the two dimensional electron gas layer, the energy level of the ground state subband thereof being higher than that of the two-dimensional electron gas layer. This heterojunction magnetic field sensor has a high sensitivity which is not saturated even under a high electric field and provides an enhanced output even under the high electric field.

Abstract translation: 异质结磁场传感器基本上是异相结构，其分别在具有不同带隙的至少两种不同种类的半导体层的接合部分分别形成具有高载流子迁移率的二维电子气体层，此外，至少一个 提供与二维电子气层相邻并与之接触的具有量子阱结构的半导体层，其基态子带的能级高于二维电子气层的能级。 该异质结磁场传感器具有高灵敏度，即使在高电场下也不饱和，甚至在高电场下也能提供增强的输出。

公开(公告)号：US06476582B2

公开(公告)日：2002-11-05

申请号：US09964457

申请日：2001-09-28

Applicant: Saburo Yokokura ,  Munecazu Tacano ,  Toshiaki Matsui

Inventor： Saburo Yokokura ,  Munecazu Tacano ,  Toshiaki Matsui

IPC: H01M1046

CPC classification number: H02J7/0047 ,  G01R1/30

Abstract: In a battery power supply apparatus for low-noise measurement systems or ultra high-sensitivity sensor elements (ultra-sensitive light or microwave sensors, or SQUID, SIS/SNS or other Josephson effect devices, etc.), the power supply device that supplies power to the outside and the control device that controls the power supply device perform bidirectional communications by means of an optical communications circuit, and thus it is possible to prevent noise arising in the control device from reaching the power supply device. In addition, it is possible to prevent the introduction of noise from the optical communications circuit into the power supply device within a shield case. Accordingly, it is possible to control the operation of the power supply device enclosed within the shield case from the control device outside of the shield case without having external noise affecting the power supply device. Moreover, based on commands from the control device, the power supply control device controls the battery control device and resistance control device, thus adjusting the current/voltage supplied to the outside from the power supply circuit of the power supply device and then, the startup/shutdown control device shuts off the supply of operating power, thereby eliminating noise generated by various functional blocks within the power supply device. Furthermore, the set states of the battery control device and resistance control device are maintained even after the operating power is shut off, so it is possible to continue the supply of battery power to the outside at the desired current/voltage settings at low noise.

Abstract translation: 在用于低噪声测量系统或超高灵敏度传感器元件（超灵敏光或微波传感器或SQUID，SIS / SNS或其他约瑟夫逊效应器件等）的电池供电装置中，供电装置 控制电源装置的控制装置通过光通信电路进行双向通信，能够防止控制装置中产生的噪声到达供电装置。 此外，可以防止从光通信电路将噪声引入屏蔽壳内的电源装置。 因此，可以将屏蔽壳内的电源装置的操作从屏蔽壳外部的控制装置控制，而不会影响到电源装置的外部噪声。 另外，根据来自控制装置的命令，电源控制装置控制电池控制装置和电阻控制装置，从而从供电装置的电源电路调整向外部供给的电流/电压，然后启动 /关闭控制装置切断供电的动力，从而消除供电装置内的各种功能块产生的噪声。 此外，即使在关闭操作电源之后，电池控制装置和电阻控制装置的设定状态也被保持，因此可以以低噪声以期望的电流/电压设置继续向外部供应电池电力。