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    • 1. 发明申请
    • INVERTER
    • 逆变器
    • US20150326156A1
    • 2015-11-12
    • US14763035
    • 2014-01-21
    • Takao KANZAKITomoo YAMABUKI
    • Takao KANZAKITomoo YAMABUKI
    • H02P6/12H02P27/06H02M7/537
    • H02P6/12G01R31/028G01R31/343H02M1/32H02M7/537H02M7/53871H02M2001/322H02P27/06
    • An inverter includes a first series circuit in which a first switching element and a second switching element are connected in series; a capacitor connected in parallel to the first series circuit; a first current detection device that detects current that flows in the first series circuit; and a discharge test execution device that outputs a signal of bringing the first switching element and the second switching element to a conducting state, and that outputs a signal of switching one of the first switching element and the second switching element to a non-conducting state before predefined power flows in the first switching element, based on a detection result by the first current detection device.
    • 逆变器包括第一串联电路,其中第一开关元件和第二开关元件串联连接; 与第一串联电路并联连接的电容器; 检测在第一串联电路中流动的电流的第一电流检测装置; 以及放电测试执行装置,其输出将所述第一开关元件和所述第二开关元件导通到导通状态的信号,并且将所述第一开关元件和所述第二开关元件中的一个切换到非导通状态的信号 在第一开关元件中的预定功率流动之前,基于第一电流检测装置的检测结果。
    • 5. 发明申请
    • INVERTER
    • 逆变器
    • US20130181731A1
    • 2013-07-18
    • US13738529
    • 2013-01-10
    • Takao KANZAKIKoichi SAKATAYusuke SHINDOYasuaki IGARASHI
    • Takao KANZAKIKoichi SAKATAYusuke SHINDOYasuaki IGARASHI
    • G01R31/02
    • G01R31/028G01R31/42
    • In a test of discharging a capacitor by electrically turning on a first switching element and a second switching element that are inserted in series in a conductor connecting a positive electrode and a negative electrode of the capacitor, a discharge current that passes through the first and second switching elements tend to apply stress on the first and second switching elements. In this discharge test, while a first control signal for putting the first switching element into a low resistance state is being applied to the first switching element, a second control signal increasing a voltage thereof over time is applied to the second switching element, and application of one of or both of the first and second control signals is stopped when a current detector detects a current. Since a discharge test ends when a limited discharge current starts flowing, stress associated with the discharge test is reduced.
    • 在通过电连接串联插入连接电容器的正极和负极的导体的第一开关元件和第二开关元件来放电电容器的测试中,通过第一和第二开关元件的放电电流 开关元件倾向于对第一和第二开关元件施加应力。 在该放电试验中,当将用于将第一开关元件置于低电阻状态的第一控制信号被施加到第一开关元件时,随着时间推移将其电压增加的第二控制信号施加到第二开关元件,并且应用 当电流检测器检测到电流时,停止第一和第二控制信号中的一个或两者。 由于放电试验在有限的放电电流开始流动时结束,所以与放电试验有关的应力降低。
    • 6. 发明授权
    • Amplifier circuit and power supply provided therewith
    • 放大器电路和电源
    • US06850118B2
    • 2005-02-01
    • US10623580
    • 2003-07-22
    • Koichi HanafusaTakao Kanzaki
    • Koichi HanafusaTakao Kanzaki
    • G05F1/56G05F1/575H03F3/45H03F3/04
    • G05F1/575
    • An amplifier circuit includes first and second resistors that are serially connected to each other between bases of first and second transistors that flow the same current as that in a differential transistor pair made up of two transistors. A capacitor is provided between a junction of the first and second resistors and the collector of the first transistor on the output side. The amplifier circuit has a gain whose frequency characteristic is determined by a low-pass filter realized by the second resistor and capacitor connected to the second transistor. The frequency characteristic lowers a gain of the frequency that causes output oscillation, thereby preventing output oscillation. The two resistors divide a resistance between the bases of the sub transistors, so as to reduce a resistance of the second resistor. As a result, the effect of phase compensation becomes weaker and the load response characteristic of the power supply improves. This enables the DC regulated power supply, even if it is of an intermediate current type which produces an output current of about 500 mA, to prevent output oscillation without reducing the load response characteristic, even when a chip-stacked ceramic capacitor is used as the output capacitor.
    • 放大器电路包括在第一和第二晶体管的基极之间串联连接的第一和第二电阻器,其流过与由两个晶体管构成的差分晶体管对中的电流相同的电流。 电容器设置在第一和第二电阻器的结点与输出侧第一晶体管的集电极之间。 放大器电路具有其频率特性由连接到第二晶体管的第二电阻器和电容器实现的低通滤波器确定的增益。 频率特性降低导致输出振荡的频率增益,从而防止输出振荡。 两个电阻器在子晶体管的基极之间划分电阻,以便减小第二电阻器的电阻。 结果,相位补偿的影响变弱,电源的负载响应特性提高。 这使得直流调节电源即使是产生大约500mA的输出电流的中间电流型,即使当使用芯片堆叠的陶瓷电容器作为时,也可以防止输出振荡而不降低负载响应特性 输出电容。
    • 10. 发明授权
    • Inverter
    • 逆变器
    • US09372220B2
    • 2016-06-21
    • US13738529
    • 2013-01-10
    • Takao KanzakiKoichi SakataYusuke ShindoYasuaki Igarashi
    • Takao KanzakiKoichi SakataYusuke ShindoYasuaki Igarashi
    • G01R31/00G01R31/02G01R31/42
    • G01R31/028G01R31/42
    • In a test of discharging a capacitor by electrically turning on a first switching element and a second switching element that are inserted in series in a conductor connecting a positive electrode and a negative electrode of the capacitor, a discharge current that passes through the first and second switching elements tend to apply stress on the first and second switching elements. In this discharge test, while a first control signal for putting the first switching element into a low resistance state is being applied to the first switching element, a second control signal increasing a voltage thereof over time is applied to the second switching element, and application of one of or both of the first and second control signals is stopped when a current detector detects a current. Since a discharge test ends when a limited discharge current starts flowing, stress associated with the discharge test is reduced.
    • 在通过电连接串联插入连接电容器的正极和负极的导体的第一开关元件和第二开关元件来放电电容器的测试中,通过第一和第二开关元件的放电电流 开关元件倾向于对第一和第二开关元件施加应力。 在该放电试验中,当将用于将第一开关元件置于低电阻状态的第一控制信号被施加到第一开关元件时,随着时间推移将其电压增加的第二控制信号施加到第二开关元件,并且应用 当电流检测器检测到电流时,停止第一和第二控制信号中的一个或两者。 由于放电试验在有限的放电电流开始流动时结束,所以与放电试验有关的应力降低。