Switching power supply
    1.
    发明授权
    Switching power supply 失效
    开关电源

    公开(公告)号:US4595973A

    公开(公告)日:1986-06-17

    申请号:US712098

    申请日:1985-03-15

    IPC分类号: H02M3/338 H02M3/335

    CPC分类号: H02M3/338

    摘要: A switching power supply has a saturable transformer provided with first to fourth windings. The first winding is inserted in series in a first path from a DC power source to a primary winding of a power transmitting transformer. A main switch is inserted in series in the first path and controlled by an output of the second winding. The operation of the main switch is positively fed back through the saturable transformer. A capacitor is connected in parallel to a series circuit consisting of the main switch and the first winding. An auxiliary source for generating a predetermined direct current output is provided to drive the third winding by a polarity opposite to that of the first winding. An auxiliary switch is inserted in series in a second path from the auxiliary source to the third winding and controlled by an output of the fourth winding. The operation of the auxiliary switch is positively fed back through the saturable transformer.

    摘要翻译: 开关电源具有设置有第一至第四绕组的饱和变压器。 第一绕组串联插入从直流电源到功率传输变压器的初级绕组的第一路径中。 主开关串联插入第一路径并由第二绕组的输出端控制。 主开关的运行通过饱和变压器正向反馈。 电容器与由主开关和第一绕组组成的串联电路并联连接。 提供用于产生预定直流输出的辅助源,以与第一绕组相反的极性驱动第三绕组。 辅助开关串联插入从辅助源到第三绕组的第二路径,并由第四绕组的输出控制。 辅助开关的运行通过饱和变压器正向反馈。

    High frequency switching circuit
    2.
    发明授权
    High frequency switching circuit 失效
    高频开关电路

    公开(公告)号:US4417153A

    公开(公告)日:1983-11-22

    申请号:US349094

    申请日:1982-02-16

    CPC分类号: H02M3/33538 Y10T307/944

    摘要: A single-ended switching circuit is constituted by a primary winding of a transformer, a switching circuit connected between the primary winding and a DC power supply and on-off operated with a predetermined cycle and also with a predetermined "on" period and a resonance capacitor connected in parallel with the primary winding. A magnetic amplifier, a rectifying element and a choke coil are connected in series between a secondary side circuit of the transformer and the load. The magnetic amplifier includes a saturable reactor which is held saturated during a half cycle of the voltage induced in a secondary winding of the transformer and remains unsaturated during the other half cycle of the voltage.

    摘要翻译: 单端开关电路由变压器的初级绕组,连接在初级绕组和直流电源之间的开关电路和以预定的周期运行的开关电路以及预定的“开”周期和共振 电容器与初级绕组并联连接。 磁放大器,整流元件和扼流线圈串联连接在变压器的次级侧电路和负载之间。 磁放大器包括可饱和电抗器,其在变压器的次级绕组中感应的电压的半周期期间保持饱和,并且在电压的另一半周期期间保持不饱和。

    Single ended, separately driven, resonant DC-DC converter
    3.
    发明授权
    Single ended, separately driven, resonant DC-DC converter 失效
    单端,单独驱动,谐振式DC-DC转换器

    公开(公告)号:US4443839A

    公开(公告)日:1984-04-17

    申请号:US329438

    申请日:1981-12-10

    IPC分类号: H02M3/335

    摘要: A single ended, separately driven, resonant DC-DC converter including a transformer, a capacitor connected in parallel with a primary winding of the transformer, a switching transistor connected between one end of the primary winding of the transformer and one end of a DC power source, and a blocking oscillating circuit for driving the switching transistor. The blocking oscillating circuit is directly driven by the DC power source and contains circuits for properly setting a pulse width and a pulse stop period of output pulses from the blocking oscillating circuit.

    摘要翻译: 包括变压器,与变压器的初级绕组并联连接的电容器的单端单独驱动的谐振DC-DC转换器,连接在变压器初级绕组的一端和直流电源的一端之间的开关晶体管 源极和用于驱动开关晶体管的阻塞振荡电路。 阻塞振荡电路由直流电源直接驱动,并包含用于适当地设置来自阻塞振荡电路的输出脉冲的脉冲宽度和脉冲停止周期的电路。

    Resonance inverter with control means for detecting peak voltage and
having a starting circuit
    5.
    发明授权
    Resonance inverter with control means for detecting peak voltage and having a starting circuit 失效
    谐振逆变器,具有用于检测峰值电压并具有启动电路的控制装置

    公开(公告)号:US4698743A

    公开(公告)日:1987-10-06

    申请号:US910979

    申请日:1986-09-24

    CPC分类号: H02M7/5236 H02M3/315

    摘要: A resonance inverter includes a DC power source, a resonance capacitor, an inductor, and a plurality of semiconductor switches. The resonance capacitor and inductor form a parallel resonant circuit. The inverter further includes control means for detecting a peak value of the voltage across the resonance capacitor, and for alternately conducting said semiconductor switches with a certain lead phase with respect to the peak point of the capacitor terminal voltage.

    摘要翻译: 谐振逆变器包括直流电源,谐振电容器,电感器和多个半导体开关。 谐振电容器和电感器形成并联谐振电路。 逆变器还包括用于检测谐振电容器两端的电压的峰值的控制装置,并且用于相对于电容器端子电压的峰值点以一定的引线相交替地导通所述半导体开关。

    High frequency switching circuit having preselected parameters to reduce
power dissipation therein
    6.
    发明授权
    High frequency switching circuit having preselected parameters to reduce power dissipation therein 失效
    具有预选参数以降低功耗的高频开关电路

    公开(公告)号:US4318164A

    公开(公告)日:1982-03-02

    申请号:US129405

    申请日:1980-03-11

    摘要: A high frequency switching circuit in which, to reduce power dissipation of a switching element, the characteristic impedance defined by the inductance of a transformer connected in series with the switching element and the capacitance of a capacitor connected in parallel with the switching element, the ratio of the input voltage and an output voltage, and the ratio of ON time and a switching period T of the switching element are each selected within a given range. Alternatively, a ratio pertaining to a leakage inductance of the transformer and an inductance of an additional inductor, and a ratio pertaining to the output and input voltages are selected to satisfy a predetermined relation and the characteristic impedance is selected within a given range.

    摘要翻译: 一种高频开关电路,其中为了降低开关元件的功耗,由与开关元件串联连接的变压器的电感和与开关元件并联连接的电容器的电容所确定的特性阻抗, 的输入电压和输出电压,并且开关元件的导通时间和开关周期T的比率分别在给定范围内选择。 或者,选择与变压器的漏电感和附加电感的电感有关的比例以及与输出和输入电压有关的比例以满足预定关系,并且在给定范围内选择特征阻抗。

    Single-ended switching converter
    7.
    发明授权
    Single-ended switching converter 失效
    单端开关转换器

    公开(公告)号:US4383292A

    公开(公告)日:1983-05-10

    申请号:US255094

    申请日:1981-04-17

    CPC分类号: H02M3/155 H02M3/335

    摘要: A series circuit of a transistor serving as a switching element and an input power supply is connected in parallel with the primary side inductor of a transformer. A resonance capacitor and a damping diode are connected in parallel with the transistor. When the transistor is turned on in response to a pulse signal supplied from a pulse generator, the current from a DC power supply is supplied to the transformer. At the same time, a commutating diode is turned on to supply the output current from the transformer to a load resistor.

    摘要翻译: 用作开关元件的晶体管和输入电源的串联电路与变压器的初级侧电感器并联连接。 谐振电容器和阻尼二极管与晶体管并联连接。 当晶体管响应于从脉冲发生器提供的脉冲信号而导通时,来自直流电源的电流被提供给变压器。 同时,换向二极管导通以将变压器的输出电流提供给负载电阻。

    Display device and driving method
    8.
    发明授权
    Display device and driving method 失效
    显示装置及驱动方法

    公开(公告)号:US6107983A

    公开(公告)日:2000-08-22

    申请号:US41950

    申请日:1998-03-13

    IPC分类号: G09G3/20 G09G3/36

    摘要: A display device comprises a display panel, a scanning circuit section for supplying a scanning signal to scanning lines of the display panel, and a scanning control circuit section for supplying an n-bit (n: 2 or more positive integer) input numeral signal and an inverted replica of the input numeral signal to the scanning circuit section. In the display device, a scanning circuit section comprises an input connection line group having sets of input connection lines for receiving bits of the input numeral signal and bits of the inverted replica of the input numeral signal, a plurality of logic circuit sections, less in number than the scanning lines, for responding to combinations of the input numeral signal and its inverted replica, and an output distributing unit for assigning an output from one logic circuit section to at least two scanning lines. It is, therefore, possible to suppress an increase in the number of connection lines and of the logic circuit sections involving a high definition of a display device and hence to manufacture a display device in a high yield.

    摘要翻译: 显示装置包括显示面板,用于向显示面板的扫描线提供扫描信号的扫描电路部分和用于提供n位(n:2或更多正整数)输入数字信号的扫描控制电路部分和 输入数字信号的反转副本到扫描电路部分。 在显示装置中,扫描电路部分包括具有用于接收输入数字信号的位和输入数字信号的反相副本的位的输入连接线组的输入连接线组,多个逻辑电路部分 用于响应输入数字信号和其反相副本的组合,以及输出分配单元,用于将来自一个逻辑电路部分的输出分配给至少两条扫描线。 因此,可以抑制连接线的数量的增加和涉及显示装置的高清晰度的逻辑电路部分的增加,从而以高产量制造显示装置。

    Display device and its driving method
    9.
    发明授权
    Display device and its driving method 失效
    显示装置及其驱动方法

    公开(公告)号:US5801672A

    公开(公告)日:1998-09-01

    申请号:US432165

    申请日:1995-05-08

    IPC分类号: G09G3/20 G09G3/36

    摘要: A display device comprises a display panel, a scanning circuit section for supplying a scanning signal to scanning lines of the display panel, and a scanning control circuit section for supplying an n-bit (n: 2 or more positive integer) input numeral signal and an inverted replica of the input numeral signal to the scanning circuit section. In the display device, a scanning circuit section comprises an input connection line group having sets of input connection lines for receiving bits of the input numeral signal and bits of the inverted replica of the input numeral signal, a plurality of logic circuit sections, less in number than the scanning lines, for responding to combinations of the input numeral signal and its inverted replica, and an output distributing unit for assigning an output from one logic circuit section to at least two scanning lines. It is, therefore, possible to suppress an increase in the number of connection lines and of the logic circuit sections involving a high definition of a display device and hence to manufacture a display device in a high yield.

    摘要翻译: PCT No.PCT / JP94 / 01502 Sec。 371日期1995年5月8日 102(e)日期1995年5月8日PCT 1994年9月9日PCT公布。 WO95 / 07493 PCT出版物 日期1995年3月16日显示装置包括显示面板,用于向显示面板的扫描线提供扫描信号的扫描电路部分和用于提供n位(n:2或更多正整数)的扫描控制电路部分 )输入数字信号和输入数字信号的反相副本到扫描电路部分。 在显示装置中,扫描电路部分包括具有用于接收输入数字信号的位和输入数字信号的反相副本的位的输入连接线组的输入连接线组,多个逻辑电路部分 用于响应输入数字信号和其反相副本的组合,以及输出分配单元,用于将来自一个逻辑电路部分的输出分配给至少两条扫描线。 因此,可以抑制连接线的数量的增加和涉及显示装置的高清晰度的逻辑电路部分的增加,从而以高产量制造显示装置。

    Oscillator using a piezo-electric device
    10.
    发明授权
    Oscillator using a piezo-electric device 失效
    振荡器采用压电装置

    公开(公告)号:US4897621A

    公开(公告)日:1990-01-30

    申请号:US312557

    申请日:1989-02-21

    申请人: Youichi Masuda

    发明人: Youichi Masuda

    IPC分类号: H03B5/32

    CPC分类号: H03B5/326

    摘要: In an oscillator of this invention, a differential amplifier circuit is constituted by connecting the collectors of first and second transistors to one terminal of a DC power source respectively through first and second resistors, the emitters of the first and second transistors to the other terminal of the DC power source through a common current-source, and the bases of the first and second transistors to a bias circuit for applying a bias voltage, at least one port of a piezo-electric device having at least two ports on a single substrate is connected between the collectors of the first and second transistors, and the remaining port is connected between the bases of the first and second transistors. The transistors can be field effect transistors, and the common current-source can be a resistor. In this oscillator, since no DC voltage is applied across transducers of each port, degradation of a piezo-electric device can be prevented. The circuit has a complete symmetrical arrangement, and only a DC current flows in from the power source. For this reason, the circuit does not serve as a noise source for another circuit connected to the power source, and is not easily influenced by noise from the other circuit. Since no large-capacitance capacitor is required, the oscillator is suitable for an integrated circuit.