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    • 1. 发明授权
    • Controllable phase shifter
    • 可控移相器
    • US4302716A
    • 1981-11-24
    • US92348
    • 1979-11-08
    • Hans GlavitschGerhard Guth
    • Hans GlavitschGerhard Guth
    • H02J3/18H03H7/21H03K3/352
    • H02J3/1864H03H7/21Y02E40/12
    • Controllable phase shifters containing reactances and valve switching devices are used for compensation and stabilizing purposes in alternating current-energy transmission systems. There is desired a phase shift which can be continuously controlled within variable limits and with comparatively low expenditure in circuit components. There is provided at least one shunt circuit branch between primary terminals having mutual phase shifted voltages, and a tap provided as a secondary terminal supplies a secondary voltage or potential having a phase between that of the primary terminals. At both sides of the secondary terminal there are arranged in the shunt circuit branch preferably complementary reactive impedances. At least one valve switching device, controllable with respect to its gating behavior, is arranged in series or parallel to one such impedance and renders possible changing the magnitude of the impedance which is effective for the fundamental oscillation, and thus, a change of the control phase angle. Preferably valve switching devices are provided at both sides, and, if desired, in combination parallel and in series with the impedances to both sides of the secondary terminal, thereby realizing the advantage of a phase angle control in both directions and over wide ranges of the primary phase angle.
    • 含有电抗器和阀门开关装置的可控移相器用于交流电能传输系统中的补偿和稳定。 期望可以在可变限制内连续地控制相位偏移,并且在电路部件中具有相对较低的支出。 在具有相互相移电压的主端子之间提供至少一个并联电路分支,并且作为次级端子提供的抽头提供具有在一次端子之间的相位的次级电压或电位。 在次级端子的两侧布置有分流电路支路,优选地是互补的无功阻抗。 至少一个阀控开关装置可相对于其门控行为可控制地串联或平行于一个这样的阻抗,并且使得可能改变对于基本振荡有效的阻抗的大小,并因此改变控制 相位角。 优选地,阀开关装置设置在两侧,并且如果需要,与次端子的两侧的阻抗并联并串联,从而实现在两个方向上和在宽范围内的相位角控制的优点 主相位角。
    • 5. 发明授权
    • Generation of stepped voltages for color television and the like
    • 生成彩色电视机的阶梯电压等
    • US3887838A
    • 1975-06-03
    • US80511369
    • 1969-03-04
    • POLAROID CORP
    • THURSTON RICHARD P
    • H03K3/35H03K3/352H04N9/27H01J29/80
    • H03K3/35H03K3/352H04N9/27
    • This specification discloses a high voltage switching system for driving the screen of a color television picture tube in order to generate different color images on the screen thereof in accordance with different video signals. The switching system comprises a transformer, which is connected into a resonant circuit with the capacitance provided by the screen of the color television system. The inductance provided by the transformer is periodically switched between low and high inductance and simultaneously with the switching, energy is coupled into and out of the resonant circuit to generate a step waveform across the capacitance provided by the screen of the picture tube.
    • 本说明书公开了一种用于驱动彩色电视显像管的屏幕的高压开关系统,以便根据不同的视频信号在其屏幕上产生不同的彩色图像。 开关系统包括变压器,其连接到由彩色电视系统的屏幕提供的电容的谐振电路中。 由变压器提供的电感周期性地在低电感和高电感之间切换,并且与开关同时,能量被耦合到谐振电路中并从谐振电路输出,以在由显像管的屏幕提供的电容之间产生一个阶跃波形。
    • 7. 发明授权
    • Time delay relay
    • 延时延时
    • US3737732A
    • 1973-06-05
    • US3737732D
    • 1971-08-30
    • MATSUSHITA ELECTRIC WORKS LTD
    • SUEMASA HHONDA KYODA KHANAHARA T
    • H03K3/352H03K17/28H01H47/18
    • H03K3/352H03K17/28
    • A time delay relay of the type in which a semiconductor switching element is made conductive after a predetermined time by a RC time constant circuit so as to actuate a relay connected in series with the semiconductor switching element with respect to a power source. The RC time constant circuit is connected to the semiconductor switching element through a transistor element and, among leakage current of the semiconductor switching element, the current flowing through resistor of the RC time constant circuit is restrained to be low utilizing amplifying action of the transistor element, thereby enabling a delaying action for a long time period.
    • 一种时间延迟继电器,其中半导体开关元件在预定时间之后由RC时间常数电路导通,以便致动与半导体开关元件相对于电源串联连接的继电器。 RC时间常数电路通过晶体管元件连接到半导体开关元件,并且在半导体开关元件的漏电流中,通过晶体管元件的放大作用将流过RC时间常数电路的电阻器的电流抑制得较低 从而能够实现长时间的延迟动作。