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    • 2. 发明授权
    • Overload relay with adjustable threshold indicator
    • 具有可调阈值指示器的过载继电器
    • US4879626A
    • 1989-11-07
    • US256138
    • 1988-10-07
    • In S. Kim
    • In S. Kim
    • H02H3/093
    • H02H3/093
    • The present invention relates to an electronic overload relay which uses a schmidt trigger circuit or a CMOS integrated circuit, wherein the electronic overload relay includes an automatic return circuit connected in parallel between the output terminal of a NOT-gate and the input terminal of a succeeding NOT-gate, an instaneous operation characteristic circuit connected in series between one terminal of a variable resistance and the input terminal of the succeeding NOT-gate, and a temperature compensation circuit connected in parallel to the secondary coil of the current transformer.
    • 本发明涉及使用施密特触发电路或CMOS集成电路的电子过载继电器,其中电子过载继电器包括并联连接在非门的输出端和后续的输入端之间的自动返回电路 非栅极,串联连接在可变电阻的一个端子和后续的非门的输入端子之间的瞬时操作特性电路以及与电流互感器的次级线圈并联连接的温度补偿电路。
    • 4. 发明授权
    • Power efficient motor starter and circuit breaker for an induction motor
    • 用于感应电动机的高效电机启动器和断路器
    • US4574229A
    • 1986-03-04
    • US565870
    • 1983-12-27
    • In S. Kim
    • In S. Kim
    • H02P1/44H02P1/24H02H7/085
    • H02P1/44
    • A motor starter and protection circuit is disclosed wherein a bimetallic contact support supports moveable contacts which are electrically interconnected with stationary contacts during normal non-overload conditions. Current from the power support passes through the stationary moveable contact sets as well as the bimetallic contact support and through the main coil of the motor. A positive temperature coefficient resistance is mounted on the contact support in electrical interconnection therewith. Current passes through this resistance, a TRIAC, and the motor starting winding. Conduction of the TRIAC is controlled by sensing the current which passes through the main motor coil. Only when the current passing through the main coil is substantially greater than normal load current is the TRIAC gated into conduction. A phase control capacitance is interposed between the coil sensing current through the main coil of the motor and the TRIAC gate. This capacitance ensures substantially complete conduction of the TRIAC when gated ON. The mounting of the positive temperature coefficient resistance directly on the contact support ensures good thermal transfer of the heat generated by this resistance and also maintains this resistance heated during normal operation after starting due to heat developed within the bimetallic contact support.
    • 公开了一种电动机起动器和保护电路,其中双金属接触支撑件支撑在正常非过载条件下与静触点电互连的可移动触点。 来自电源支架的电流通过固定的可动触点组以及双金属触点支撑并通过电动机的主线圈。 正温度系数电阻安装在接触支架上与其电互连。 电流通过该电阻,TRIAC和电机启动绕组。 通过感测通过主电机线圈的电流来控制TRIAC的传导。 只有当通过主线圈的电流显着大于正常的负载电流时,TRIAC才会导通。 在通过电动机的主线圈的线圈感测电流和TRIAC门之间插入相位控制电容。 当门控ON时,该电容确保TRIAC的基本完全导通。 将正温度系数电阻直接安装在接触支架上确保了由该电阻产生的热量的良好的热传递,并且还保持该电阻在由于双金属触点支撑件内的热量显影而起动之后的正常操作期间被加热。
    • 6. 发明授权
    • Programmed recording method for VCR without tuner, and device thereof
    • 无调谐器的VCR的编程记录方法及其装置
    • US5262903A
    • 1993-11-16
    • US567603
    • 1990-08-15
    • In S. Kim
    • In S. Kim
    • H04N5/7826G04G15/00G11B15/02G11B15/07G11B15/08G11B15/10G11B31/00H04N5/76H04N5/765H04N5/775H04N5/78
    • H04N5/775G04G15/006G11B15/026
    • A programmed recording device for a VCR without a tuner and a method thereof are disclosed. In the programmed recording device, a microprocessor outputs a control signal when carrying out a recording or a playing, and voltage converting means converts the contorl signal of the microprocessor to a voltage. A voltage detection section detects the voltage after receipt of the output of the voltage converting section, and power source switching means are operated by the power source and in according with the voltage detected by the voltage detecting means. A constant voltage circuit converts the AC power source to a constant DC voltage in a state interlocked with the power source switching section in order to activate the TV. According to the present invention, a recording can be started and terminated at the preset time automatically even without a tuner thereby improving the performance of the products.
    • 公开了一种用于没有调谐器的VCR的编程记录装置及其方法。 在编程记录装置中,微处理器在执行记录或播放时输出控制信号,电压转换装置将微处理器的控制信号转换为电压。 电压检测部分在接收到电压转换部分的输出之后检测电压,并且电源切换装置由电源操作,并且根据由电压检测装置检测到的电压。 恒定电压电路将AC电源转换成与电源切换部分互联的状态的恒定DC电压,以激活TV。 根据本发明,即使没有调谐器,也可以在预设时间自动开始和结束记录,从而提高产品的性能。
    • 8. 发明授权
    • Video signal selection circuit
    • 视频信号选择电路
    • US5572263A
    • 1996-11-05
    • US351083
    • 1994-11-30
    • Jae Y. KimDong J. GoIn S. KimSang S. Lee
    • Jae Y. KimDong J. GoIn S. KimSang S. Lee
    • H04N5/268
    • H04N5/268
    • A video signal selection circuit capable of reading automatically the connection state of a plurality of video jack ports and selecting only modes corresponding to video ports which presently have a jack connected thereto. This video signal selection circuit includes a predetermined number of video jack ports, a predetermined number of switches respectively connected to the video jack ports and turned on when a corresponding jack is connected to the video jack port, and a micro-processor which registers the fact that the jack is connected to the video jack port by checking whether the corresponding switch is turned on. The micro-processor outputs a control signal so that the selection circuit selects only those ports to which jacks are connected when a mode conversion key is actuated. A switching portion is controlled by the micro-processor's control signal and selects for output only those video signal sources corresponding to the control signals received from the micro-processor.
    • 一种视频信号选择电路,其能够自动读取多个视频插孔端口的连接状态,并且仅选择与目前具有连接到其上的插孔的视频端口对应的模式。 该视频信号选择电路包括预定数量的视频插孔端口,分别连接到视频插孔端口的预定数量的开关并且当相应的插孔连接到视频插孔端口时被接通;以及微处理器,其将事件 通过检查相应的开关是否打开,插孔连接到视频插孔端口。 微处理器输出控制信号,使得当模式转换键被启动时,选择电路仅选择插孔所连接的那些端口。 切换部分由微处理器的控制信号控制,并选择仅输出与从微处理器接收的控制信号相对应的那些视频信号源。
    • 9. 发明授权
    • Controlling device of a drill for regular and reversed rotation in
non-contact type
    • 钻头的控制装置用于非接触型的正转和反向旋转
    • US4649330A
    • 1987-03-10
    • US698687
    • 1985-02-06
    • In S. Kim
    • In S. Kim
    • B23B47/04H01H35/12H02P23/00H02P3/20
    • H01H35/12H02P23/24Y10T408/172
    • A device for changing the rotation of a drill from a forward to a reverse direction which comprises a drill, an AC single-phase motor operatively connected to the drill for driving the same, a circular measuring plate connected to the drill, the circular measuring plate having a handle, and a groove disposed on the periphery of the plate, and a microswitch containing electrical terminals and being operatively connected to the motor, the microswitch containing a bar which is pivotally disposed to engage and disengage the microswitch, the bar having a spring biased arm which extends from the microswitch to slidably engage and rotate with the periphery of the measuring plate, whereby when the handle of the measuring plate is rotated in the left or right direction, the bar of the microswitch is caused to move in a corresponding upward or downward direction along the periphery of the measuring plate, until it engages the slot whereby the direction of rotation of the motor is reversed.
    • 一种用于将钻头从正向旋转改变为相反方向的装置,包括钻头,可操作地连接到钻头以用于驱动钻头的AC单相马达,连接到钻头的圆形测量板,圆形测量板 具有把手和设置在板的周边上的槽,以及包含电端子并且可操作地连接到电动机的微动开关,微动开关包含可枢转地布置以接合和分离微动开关的杆,该杆具有弹簧 偏置臂从微型开关延伸,与测量板的周边滑动接合并旋转,由此当测量板的手柄沿左右方向旋转时,使微动开关的杆在相应的向上移动 或沿着测量板的周边的向下方向,直到其接合槽,由此马达的旋转方向相反。
    • 10. 发明授权
    • Starting winding switching circuit for single-phase induction motors
    • 单相感应电动机起动绕组开关电路
    • US4605888A
    • 1986-08-12
    • US657361
    • 1984-02-17
    • In S. Kim
    • In S. Kim
    • H02P1/44
    • H02P1/44
    • The switching device of the present invention electrically connects a single-phase induction motor's starting winding to the motor's circuitry upon start-up, and disconnects it once the motor reaches a first predetermined speed. If the motor's speed drops below a second predetermined speed, the switching device reconnects the starting winding to the motor's circuitry until the motor again reaches the first predetermined speed. At start-up, diode bridge D1 turns ON, turning ON SCR S2. With the SCR ON, the diode bridge is short-circuited, drawing a large current through the bridge's a.c. side. This current flows through resistor R8, and the voltage drop across R8 is large enough to turn triac S1 ON. Thus, current flows through starting coil L2. When the motor reaches a first predetermined speed, the voltage across the starting coil is large enough to turn NPN transistor TR2 ON, turning PNP transistor TR1 ON. Accordingly, the SCR turns OFF, eliminating the large current drawn through the a.c. side of the diode bridge, and the triac turns OFF. If the motor speed dips below a second predetermined value, lower than the first, transistor TR1 is cutoff, and the triac subsequently turns back ON until the first predetermined speed is reached.
    • 本发明的开关装置在启动时将单相感应电动机的起动绕组电连接到电动机的电路,一旦电动机达到第一预定速度就将其断开。 如果电动机的速度低于第二预定速度,则开关装置将起动绕组重新连接到电动机的电路,直到电动机再次达到第一预定速度。 启动时,二极管桥D1导通,导通SCR S2。 在SCR接通的情况下,二极管桥短路,通过桥的电流吸入大电流。 侧。 该电流流过电阻器R8,并且R8的电压降足够大以使三端双向可控硅开关元件S1导通。 因此,电流流过起动线圈L2。 当电动机达到第一预定速度时,启动线圈两端的电压足够大以使NPN晶体管TR2导通,使PNP晶体管TR1导通。 因此,SCR关闭,消除了通过直流吸入的大电流。 二极管桥的一侧,三端双向可控硅开关闭合。 如果电动机速度低于第二预定值,则低于第一预定值,则晶体管TR1截止,并且三端双向可控硅开关元件随后转而导通,直到达到第一预定速度。