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    Circuit for supplying constant voltage
    1.
    发明授权
    Circuit for supplying constant voltage 有权
    提供恒压电路

    公开(公告)号：US07071671B2

    公开(公告)日：2006-07-04

    申请号：US10974769

    申请日：2004-10-28

    申请人： Masahiro Kitagawa ,  Akio Kojima ,  Junichi Nagata

    发明人： Masahiro Kitagawa ,  Akio Kojima ,  Junichi Nagata

    IPC分类号： G05F3/16

    CPC分类号： G05F3/242 ,  G05F1/573

    摘要： A constant voltage supplying circuit including an output transistor is connected to a power source line and an output terminal. A base-emitter voltage of the output transistor is detected by a voltage detecting circuit composed of a transistor. A current-outputting circuit for supplying a current determined based on the voltage detected by the voltage detector to a reference voltage supplying circuit is used in the constant voltage supplying circuit. The reference voltage is supplied to a base of the output transistor to cancel a base-emitter voltage of the output transistor and to equalize the output voltage to a voltage generated in a reference voltage generating element included in the reference voltage supplying circuit. In this manner, the output voltage is kept constant notwithstanding variation of output current.

    摘要翻译： 包括输出晶体管的恒压供电电路连接到电源线和输出端。 输出晶体管的基极 - 发射极电压由由晶体管构成的电压检测电路来检测。 在恒压供给电路中使用用于将基于由电压检测器检测出的电压确定的电流提供给基准电压供给电路的电流输出电路。 参考电压被提供给输出晶体管的基极以消除输出晶体管的基极 - 发射极电压，并将输出电压与在参考电压供应电路中包括的参考电压产生元件中产生的电压相等。 以这种方式，尽管输出电流的变化，输出电压保持恒定。

    Drive circuit and method of applying high voltage test thereon
    2.
    发明申请
    Drive circuit and method of applying high voltage test thereon 有权
    驱动电路及其上的高压测试方法

    公开(公告)号：US20050212568A1

    公开(公告)日：2005-09-29

    申请号：US11063853

    申请日：2005-02-24

    申请人： Masahiro Kitagawa ,  Akio Kojima ,  Junichi Nagata

    发明人： Masahiro Kitagawa ,  Akio Kojima ,  Junichi Nagata

    IPC分类号： G01R31/28 ,  H03K5/08 ,  H03K5/153 ,  H03K17/08 ,  H03K17/0812 ,  H03K17/082 ,  H03K17/10 ,  H03K17/687

    CPC分类号： H03K17/0822 ,  H03K5/08 ,  H03K17/08122 ,  H03K17/102

    摘要： A drive circuit that supplies electric power to an electric load from a DC electric source includes a pair of series-connected first and second MOSFETS of the same conduction type, a pair of clamp circuits respectively connected between the drains and gates of the first and second MOSFETS, a series circuit of a first resistor and a switch, a first test terminal; a second test terminal connected to a joint of the first and second MOSFETS, a third test terminal for operating the switch, a fourth test terminal connected a joint of the first resistor and the switch; and a second resistor connected between the gate of the second MOSFET and the first test terminal. The switch and the first resistor are connected between the gate and the source of the first MOSFET to close when the drive circuit is normally operated and to open when it is given a high voltage test.

    摘要翻译： 从DC电源向电负载供电的驱动电路包括一对相同导电类型的串联连接的第一和第二MOSFET，一对钳位电路，分别连接在第一和第二漏极的漏极和栅极之间 MOSFETS，第一电阻器和开关的串联电路，第一测试端子; 连接到第一和第二MOSFET的接头的第二测试端子，用于操作开关的第三测试端子，连接第一电阻器和开关的接头的第四测试端子; 以及连接在第二MOSFET的栅极和第一测试端子之间的第二电阻器。 当驱动电路正常工作时，开关和第一个电阻连接在第一个MOSFET的栅极和源极之间，并在进行高压测试时打开。

    Drive circuit and method of applying high voltage test thereon
    3.
    发明授权
    Drive circuit and method of applying high voltage test thereon 有权
    驱动电路及其上的高压测试方法

    公开(公告)号：US07167030B2

    公开(公告)日：2007-01-23

    申请号：US11063853

    申请日：2005-02-24

    申请人： Masahiro Kitagawa ,  Akio Kojima ,  Junichi Nagata

    发明人： Masahiro Kitagawa ,  Akio Kojima ,  Junichi Nagata

    IPC分类号： H03K3/00

    CPC分类号： H03K17/0822 ,  H03K5/08 ,  H03K17/08122 ,  H03K17/102

    摘要： A drive circuit that supplies electric power to an electric load from a DC electric source includes a pair of series-connected first and second MOSFETS of the same conduction type, a pair of clamp circuits respectively connected between the drains and gates of the first and second MOSFETS, a series circuit of a first resistor and a switch, a first test terminal; a second test terminal connected to a joint of the first and second MOSFETS, a third test terminal for operating the switch, a fourth test terminal connected a joint of the first resistor and the switch; and a second resistor connected between the gate of the second MOSFET and the first test terminal. The switch and the first resistor are connected between the gate and the source of the first MOSFET to close when the drive circuit is normally operated and to open when it is given a high voltage test.

    摘要翻译： 从DC电源向电负载供电的驱动电路包括一对相同导电类型的串联连接的第一和第二MOSFET，一对钳位电路，分别连接在第一和第二漏极的漏极和栅极之间 MOSFETS，第一电阻器和开关的串联电路，第一测试端子; 连接到第一和第二MOSFET的接头的第二测试端子，用于操作开关的第三测试端子，连接第一电阻器和开关的接头的第四测试端子; 以及连接在第二MOSFET的栅极和第一测试端子之间的第二电阻器。 当驱动电路正常工作时，开关和第一个电阻连接在第一个MOSFET的栅极和源极之间，并在进行高压测试时打开。

    Circuit for supplying constant voltage
    4.
    发明申请
    Circuit for supplying constant voltage 有权
    提供恒压电路

    公开(公告)号：US20050140350A1

    公开(公告)日：2005-06-30

    申请号：US10974769

    申请日：2004-10-28

    申请人： Masahiro Kitagawa ,  Akio Kojima ,  Junichi Nagata

    发明人： Masahiro Kitagawa ,  Akio Kojima ,  Junichi Nagata

    IPC分类号： G05F1/56 ,  G05F1/573 ,  G05F3/04 ,  G05F3/22 ,  G05F3/24

    CPC分类号： G05F3/242 ,  G05F1/573

    摘要： A constant voltage supplying circuit including an output transistor is connected to a power source line and an output terminal. A base-emitter voltage of the output transistor is detected by a voltage detecting circuit composed of a transistor. A current-outputting circuit for supplying a current determined based on the voltage detected by the voltage detector to a reference voltage supplying circuit is used in the constant voltage supplying circuit. The reference voltage is supplied to a base of the output transistor to cancel a base-emitter voltage of the output transistor and to equalize the output voltage to a voltage generated in a reference voltage generating element included in the reference voltage supplying circuit. In this manner, the output voltage is kept constant notwithstanding variation of output current.

    摘要翻译： 包括输出晶体管的恒压供电电路连接到电源线和输出端。 输出晶体管的基极 - 发射极电压由由晶体管构成的电压检测电路来检测。 在恒压供给电路中使用用于将基于由电压检测器检测出的电压确定的电流提供给基准电压供给电路的电流输出电路。 参考电压被提供给输出晶体管的基极以消除输出晶体管的基极 - 发射极电压，并将输出电压与在参考电压供应电路中包括的参考电压产生元件中产生的电压相等。 以这种方式，尽管输出电流的变化，输出电压保持恒定。

    Power supply circuit with series regulator
    5.
    发明申请
    Power supply circuit with series regulator 有权
    电源电路带串联调节器

    公开(公告)号：US20060158164A1

    公开(公告)日：2006-07-20

    申请号：US11328418

    申请日：2006-01-10

    申请人： Akio Kojima ,  Junichi Nagata

    发明人： Akio Kojima ,  Junichi Nagata

    IPC分类号： G05F1/56 ,  G05F1/40

    CPC分类号： G05F1/575

    摘要： A series-regulator type of power supply circuit is provided. In the circuit, the emitter and collector of a transistor are connected to power input/output terminals. A control circuit controls a base current of the transistor based on the output voltage detected at the power output terminal and a given target voltage. A resistor circuit connects the base and the collector of the transistor. A bypass circuit connects the emitter and the base of the transistor and passes a bypass current. The accepting circuit connected to the power output terminal accepts (absorbs) current from an output current. An amount of the acceptance current is equal to or larger than an amount of the bypass current and a product of the bypass current and a resistance value of the resistance circuit is equal to or more than a difference between a voltage at the power input terminal and the target voltage.

    摘要翻译： 提供串联稳压器型电源电路。 在电路中，晶体管的发射极和集电极连接到电源输入/输出端子。 控制电路基于在功率输出端检测到的输出电压和给定的目标电压来控制晶体管的基极电流。 电阻电路连接晶体管的基极和集电极。 旁路电路连接晶体管的发射极和基极，并传递旁路电流。 连接到电力输出端子的接受电路从输出电流接受（吸收）电流。 接受电流的量等于或大于旁路电流的量，并且旁路电流与电阻电路的电阻值的乘积等于或大于电力输入端子处的电压和 目标电压。

    Output circuit
    6.
    发明授权
    Output circuit 有权

    公开(公告)号：US06518803B2

    公开(公告)日：2003-02-11

    申请号：US10052981

    申请日：2001-11-08

    申请人： Junichi Nagata ,  Akio Kojima

    发明人： Junichi Nagata ,  Akio Kojima

    IPC分类号： H03K300

    CPC分类号： H03K17/16 ,  H03K4/94 ,  H03K17/04126 ,  H03K2217/0036

    摘要： The present invention discloses an output circuit, by which it is possible to reduce power consumption while maintaining maximum voltage value to be outputted at high level. In this output circuit, a charge-and-discharge circuit uses a terminal voltage Vc of a capacitor as a trapezoidal wave voltage, and a drive circuit drives an output transistor based on the terminal voltage Vc, and a voltage Vo equal to the terminal voltage Vc is outputted to the load. A voltage detection circuit detects an emitter voltage (Vc+VF) of the transistor and generates an electric current proportional to the terminal voltage Vc. This electric current is turned to a base current of the output transistor via a variable current circuit. Therefore, a base current proportional to the output voltage Vo is supplied to the output transistor.

    Power supply circuit with series regulator
    7.
    发明授权
    Power supply circuit with series regulator 有权
    电源电路带串联调节器

    公开(公告)号：US07400125B2

    公开(公告)日：2008-07-15

    申请号：US11328418

    申请日：2006-01-10

    申请人： Akio Kojima ,  Junichi Nagata

    发明人： Akio Kojima ,  Junichi Nagata

    IPC分类号： G05F1/40 ,  G05F1/56

    CPC分类号： G05F1/575

    摘要： A series-regulator type of power supply circuit is provided. In the circuit, the emitter and collector of a transistor are connected to power input/output terminals. A control circuit controls a base current of the transistor based on the output voltage detected at the power output terminal and a given target voltage. A resistor circuit connects the base and the collector of the transistor. A bypass circuit connects the emitter and the base of the transistor and passes a bypass current. The accepting circuit connected to the power output terminal accepts (absorbs) current from an output current. An amount of the acceptance current is equal to or larger than an amount of the bypass current and a product of the bypass current and a resistance value of the resistance circuit is equal to or more than a difference between a voltage at the power input terminal and the target voltage.

    摘要翻译： 提供串联稳压器型电源电路。 在电路中，晶体管的发射极和集电极连接到电源输入/输出端子。 控制电路基于在功率输出端检测到的输出电压和给定的目标电压来控制晶体管的基极电流。 电阻电路连接晶体管的基极和集电极。 旁路电路连接晶体管的发射极和基极，并传递旁路电流。 连接到电力输出端子的接受电路从输出电流接受（吸收）电流。 接受电流的量等于或大于旁路电流的量，并且旁路电流与电阻电路的电阻值的乘积等于或大于电力输入端子处的电压和 目标电压。

    Test mode circuit and reset control method therefor
    9.
    发明授权
    Test mode circuit and reset control method therefor 有权
    测试模式电路及其复位控制方法

    公开(公告)号：US07451025B2

    公开(公告)日：2008-11-11

    申请号：US11288170

    申请日：2005-11-29

    申请人： Akio Kojima ,  Nobutomo Takagi

    发明人： Akio Kojima ,  Nobutomo Takagi

    IPC分类号： G01R31/28

    CPC分类号： G01R31/34 ,  G01R31/006

    摘要： A power control circuit is provided in a vehicle control ECU mounted in a vehicle. The control circuit, when making a shift to a test mode by a test mode circuit, closes a relay to supply a power voltage from a battery to a power line in the similar manner as an ignition main switch is turned on. A logic circuit section of the test mode circuit is reset by an OR logic of a set level of a test terminal and a level of the power line.

    摘要翻译： 在安装在车辆中的车辆控制ECU中设置有电力控制电路。 控制电路在通过测试模式电路转换到测试模式时，以与点火主开关接通的方式相似的方式闭合继电器以将电池从电池提供给电力线。 测试模式电路的逻辑电路部分由测试终端的设定电平的OR逻辑和电源线的电平复位。