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    • 4. 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。
    • 6. 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。