Commutation failure detection and control for scr inverters
    1.
    发明授权
    Commutation failure detection and control for scr inverters 失效
    无级变速器故障检测与控制

    公开(公告)号:US3821630A

    公开(公告)日:1974-06-28

    申请号:US38498973

    申请日:1973-08-02

    Applicant: GEN ELECTRIC

    CPC classification number: H02H7/1225 H02M3/158 Y02B70/1425

    Abstract: A direct current-to-alternating current inverter employing a silicon controlled rectifier (SCR) is described in which control means is provided to promptly and automatically restore inverter operation after a commutation failure. The control means includes means for sensing the instantaneous voltage across the SCR and comparing this voltage with a threshold voltage. Whenever the SCR voltage is lower than the threshold voltage, the gating pulses to the SCR and a series connected chopper of the inverter are inhibited. When the threshold voltage is exceeded, gating pulses are passed to the SCR and the chopper, thereby providing normal inverter operation.

    Solid state induction cooking systems for ranges and surface cooking units
    2.
    发明授权
    Solid state induction cooking systems for ranges and surface cooking units 失效
    固体状态感应烹饪系统用于范围和表面烹饪单元

    公开(公告)号:US3786219A

    公开(公告)日:1974-01-15

    申请号:US3786219D

    申请日:1971-12-27

    Applicant: GEN ELECTRIC

    Abstract: Solid state induction surface cooking units for domestic electric ranges and other cooking appliances are defined with respect to the operating parameters and functional components of complete induction heating systems suited for this use. The surface cooking units are designed for reliable, convenient, and safe operation, and for circuit packaging using hybrid and monolithic integrated circuits. Wide range power control of the inverter power circuits is needed for general cooking but is obtained within a limited ultrasonic operating range of the power semiconductors. The inter-dependent electrical and magnetic characteristics utilized in solid state induction cooking are related to the achievement of such desirable user features as the cool cooking surface, fast utensil warm-up, responsive heating, and unrestrained utensil mobility. In addition to cooking by changing the relative heating level, cooking is performed by setting the desired utensil temperature and by setting the desired utensil power level.

    Abstract translation: 关于适用于这种使用的完整感应加热系统的操作参数和功能部件,定义了用于家用电灶和其他烹饪器具的固态感应表面烹饪单元。 表面烹饪单元设计用于可靠,方便,安全的操作,以及使用混合和单片集成电路的电路封装。 对于一般烹饪而言,需要对变频器电源电路进行宽范围的功率控制,但是在功率半导体的有限的超声操作范围内获得。 在固态感应烹饪中使用的相互依赖的电和磁特性与实现诸如冷烹饪表面,快速餐具预热,响应加热以及无限制的器具移动性之类的所需用户特征有关。 除了通过改变相对加热水平进行烹饪之外,通过设定所需的餐具温度和设定所需的餐具功率水平进行烹调。

    Solid state induction cooking appliances and circuits
    3.
    发明授权
    Solid state induction cooking appliances and circuits 失效
    固态感应烹饪器具和电路

    公开(公告)号:US3781503A

    公开(公告)日:1973-12-25

    申请号:US3781503D

    申请日:1971-11-19

    Applicant: GEN ELECTRIC

    CPC classification number: H05B6/062 A47J36/2483 H02M7/523 H02M7/5236

    Abstract: An economical smooth-top cooking appliance for inductively heating cooking utensils preferably comprises a flat air-core induction heating coil driven at an ultrasonic frequency by a simplified one-thyristor, one-transistor, or two-transistor resonant inverter. The series and parallel resonant circuits in the inverters are formed by a capacitor and the induction heating coil. The one-thyristor series resonant circuit is desirable because power control to adjust the cooking temperature is obtained by the combined effect of increasing the frequency and amplitude of the sinusoidal current pulses supplied to the coil. The coil is also movable to change the gap spacing between coil and utensil to vary the coupled power. Flux beneath the coil is used for warming purposes.

    Sequential flashing of multiple flash lamps by low cost static control circuit of integrated design
    4.
    发明授权
    Sequential flashing of multiple flash lamps by low cost static control circuit of integrated design 失效
    通过集成设计的低成本静态控制电路对多个闪光灯进行顺序闪烁

    公开(公告)号:US3714508A

    公开(公告)日:1973-01-30

    申请号:US3714508D

    申请日:1971-02-22

    Applicant: GEN ELECTRIC

    CPC classification number: G03B15/0457

    Abstract: Electronic circuitry for sequentially firing photoflash lamps of an array of multiple flash lamps. The circuitry comprises means for causing capacitors to be charged, at different rates of charging, upon the occurrence of a start-flash signal. These capacitors are respectively associated, by means of solid state switching devices, with certain flashlamps of the array, and the unfired flashlamp associated with the charging capacitor which first reaches a predetermined voltage, will be the first to fire. Alternatively, the first lamp to be fired need not be associated with a capacitor. Upon a lamp firing, disenabling circuitry causes discontinuing of charging of the capacitors until occurrence of the next start-flash signal, whereupon the capacitors repeat or resume their charging until the unfired flashlamp becomes fired which is associated with the next charging capacitor to reach the predetermined firing voltage. The procedure is repeated for causing sequential firing of all flashlamps in the array. Circuit modifications and alternative embodiments disclosed, including a single-capacitor circuit.

    Abstract translation: 用于顺序地激发多个闪光灯阵列的闪光灯的电子电路。 电路包括用于在发生启动闪光信号时以不同的充电速率使电容器充电的装置。 这些电容器通过固态开关器件分别与阵列的某些闪光灯相关联,并且与首先达到预定电压的充电电容器相关联的未烧制的闪光灯将首先触发。 或者,要被点火的第一灯不需要与电容器相关联。 在灯点火时,断电电路导致中断电容器的充电直到发生下一个启动闪光信号,于是电容器重复或重新开始充电,直到未充电的闪光灯被点亮,这与下一个充电电容器相关联才能达到预定的 点火电压。 重复该过程以引起阵列中所有闪光灯的顺序点火。 公开了包括单电容电路的电路修改和替代实施例。

    Molded opto-electronic transducer
    5.
    发明授权
    Molded opto-electronic transducer 失效
    模制光电转换器

    公开(公告)号:US3842263A

    公开(公告)日:1974-10-15

    申请号:US32852973

    申请日:1973-02-01

    Applicant: GEN ELECTRIC

    CPC classification number: G06M1/101 G08B13/187 H01L31/12

    Abstract: A low cost opto-electronic transducer comprises a molded body of material having a pair of depressions therein. A semiconductor light source is located in one of the depressions and a photoresponsive device is located in the other. The molded body may comprise an opaque material, or, alternatively, the surfaces of the depressions may be coated with opaque material. This prevents direct illumination of the photoresponsive device by light emitted by the semiconductor light source. The depressions, and consequently the semiconductor light source and photoresponsive device contained therein, are closely spaced thereby eliminating any requirement for elaborate lens systems for focusing emitted or received light. The resulting product is a simple and inexpensive optical transducer for detecting objects at close ranges.

    Abstract translation: 低成本光电换能器包括在其中具有一对凹陷的材料成型体。 半导体光源位于一个凹陷中,光响应装置位于另一个中。 成型体可以包括不透明材料,或者可选地,凹陷的表面可以用不透明材料涂覆。 这防止由半导体光源发出的光直接照射光响应装置。 凹陷以及因此包含在其中的半导体光源和光响应装置紧密地间隔开,从而消除了用于聚焦发射或接收光的精细透镜系统的任何要求。 所得到的产品是用于检测近距离物体的简单而廉价的光学传感器。

    Opto-electronic transducers for object detection
    6.
    发明授权
    Opto-electronic transducers for object detection 失效
    用于物体检测的光电转换器

    公开(公告)号:US3819938A

    公开(公告)日:1974-06-25

    申请号:US32853073

    申请日:1973-02-01

    Applicant: GEN ELECTRIC

    CPC classification number: G01S7/4811 G08B13/187

    Abstract: A coaxial opto-electronic transducer adapted for fabrication by integrated circuit techniques is disclosed. A semiconductor light source is disposed on a base member. A support member having a void therein is disposed about the semiconductor light source on the base member. A polycrystalline photoresponsive device is located on the support member proximately the void therein. Light emitted by the light source is reflected from an object in the path of propagation of the light and a portion of the reflected light is directed onto the photoresponsive device. Since the polycrystalline photoresponsive device is on the order of 1 mil in thickness, and is spaced from the periphery of the void in the support member, the support member serves to prevent direct illumination of the photoresponsive device by light emitted by the semiconductor light source.

    Small electrical apparatus powered by induction cooking appliances
    7.
    发明授权
    Small electrical apparatus powered by induction cooking appliances 失效
    由电感烹饪器具供电的小型电器

    公开(公告)号:US3761668A

    公开(公告)日:1973-09-25

    申请号:US3761668D

    申请日:1972-03-01

    Applicant: GEN ELECTRIC

    Abstract: Induction surface cooking units are used to supply voltage to specially modified cordless auxiliary kitchen appliances and other small electrical apparatus, either motorized or resistive, placed on the counter-top cooking surface. In similar fashion a universal energizer unit comprises an inductively coupled receptor coil and rectifier with plug-in receptacles for other equipment.

    Abstract translation: 感应表面烹饪单元用于向专门改装的无绳辅助厨房电器和其他小型电气设备(电动或电阻式)提供电压,放置在台面上的烹饪表面上。 以类似的方式,通用激励器单元包括电感耦合的接收线圈和具有用于其他设备的插入式插座的整流器。

    Reliable static power converter with control logic
    8.
    发明授权
    Reliable static power converter with control logic 失效
    具有控制逻辑功能的可靠静态功率转换器

    公开(公告)号:US3832621A

    公开(公告)日:1974-08-27

    申请号:US34698273

    申请日:1973-04-02

    Applicant: GEN ELECTRIC

    CPC classification number: H05B6/062 H02M7/523 H02M7/525

    Abstract: The control circuit for an inverter is suitable for fabrication as an integrated circuit and includes, in addition to turn-on circuitry, protection circuits to assure reliable and automatic operation under abnormal circuit conditions such as overvoltages and low input voltages tending to cause device and power circuit failures. Voltage responsive sensors such as Zener diodes sense the appropriate voltages at selected points on the power circuit and modify the operation of the control circuit, preferably by over-riding and inhibiting the turn-on circuitry. Disclosed with regard to a one-thyristor, variable frequency series resonant inverter with an added maximum frequency control, the protection circuit technique is applicable to inverters generally.

    Abstract translation: 用于逆变器的控制电路适用于作为集成电路的制造,并且除了导通电路之外还包括保护电路,以确保在诸如过电压和低输入电压的异常电路条件下的可靠和自动操作,从而导致装置和功率 电路故障。 诸如齐纳二极管之类的电压响应传感器感测电源电路上选定点处的适当电压,并且优选地通过覆盖和禁止接通电路来修改控制电路的操作。 关于具有附加的最大频率控制的单晶闸管,可变频串联谐振逆变器,保护电路技术通常适用于逆变器。

    Metallic foil induction cooking
    9.
    发明授权
    Metallic foil induction cooking 失效
    金属箔感应烹饪

    公开(公告)号:US3786222A

    公开(公告)日:1974-01-15

    申请号:US3786222D

    申请日:1972-04-19

    Applicant: GEN ELECTRIC

    CPC classification number: H05B6/06

    Abstract: An ultrasonic frequency induction surface cooking unit heats aluminum foil and other thin metal utensils placed on the cool cooking surface. For optimum heating the aluminum foil has a thickness of 0.5 mils. A uniform heating distribution is obtained by preferably using a rectangular induction heating coil with several series-connected elongated coil sections, or by varying the metal thickness to graduate the energy acceptance. Frozen convenience foods can be defrosted in this manner, and the aluminum foil can be wrapped about the food and shaped by the user into disposable utensils using a set of molds. Disposable foil cooking obviates the clean-up and storage problems of pots and pans.

    Abstract translation: 超声频率感应表面烹饪单元加热放置在冷烹饪表面上的铝箔和其他薄金属餐具。 为了最佳加热,铝箔的厚度为0.5密耳。 通过优选使用具有几个串联连接的细长线圈部分的矩形感应加热线圈或通过改变金属厚度来分级能量接受来获得均匀的加热分布。 可以以这种方式解冻冷冻的方便食品,并且可以将铝箔包裹在食物上并由使用者使用一套模具成型成一次性餐具。 一次性箔烹饪避免了锅和锅的清理和储存问题。

    Inductively heatable utensils or vessels for heating,serving and storing food
    10.
    发明授权
    Inductively heatable utensils or vessels for heating,serving and storing food 失效
    用于加热,服务和储存食品的电感式热敏电阻器或容器

    公开(公告)号:US3745290A

    公开(公告)日:1973-07-10

    申请号:US3745290D

    申请日:1972-03-01

    Applicant: GEN ELECTRIC

    CPC classification number: H05B6/12 A47J27/002 A47J36/02 A47J39/00 Y10S220/902

    Abstract: Disclosed herein are various single wall and double-walled inductively heatable vessels for heating, serving and storing food. In general, each vessel is comprised of an inductively heatable inner part, or inner section, and an outer part, or outer section, which is not inductively heatable. For example, immediately after the vessel and food contained therein has been inductively cooked, or heated, on an induction appliance, the vessel may be rested directly on the surface of a conventional dining table without fear of burning the surface of the dining table and without fear that any of the diners will burn themselves by touching the outer part of the vessel. Such fears are abated because only the non-heated outer part of the vessel which is near room temperature touches the dining table and is safely accessible to the diners. The inductively heatable inner part, or section, of the vessel may be comprised of a vapordeposited metallic coating, metallic foil or sheet composite thereof, embedded powdered metal or coiled wires while the nonheated outer part or section may be comprised of suitable thermal insulation material such as plastics, glass, or ceramics, etc.

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