Compact electrical power supply for signal processing applications
    1.
    发明授权
    Compact electrical power supply for signal processing applications 失效
    用于信号处理应用的紧凑型电源

    公开(公告)号:US4533986A

    公开(公告)日:1985-08-06

    申请号:US547376

    申请日:1983-10-31

    Inventor: Dwight V. Jones

    Abstract: The present invention relates to a compact electrical power supply which derives electrical energy from a low frequency medium voltage source (e.g. a 120 V 60 Hz ac main), and converts the electrical energy to a low voltage format suitable for solid state signal processing equipment. The supply entails in succession bridge rectification means, a dc-dc boost converter, a capacitor storage bank, and a half bridge converter, either resonantly or non-resonantly operated. The converters operate at frequencies substantially above audible frequencies in the interests of compactness. The design provides a high input power factor (inductive) with minimum EMT, and provides a lengthened voltage hold up after loss of power.

    Abstract translation: 本发明涉及一种从低频中压电源(例如120V 60Hz交流主电源)获得电能并将电能转换成适合于固态信号处理设备的低电压格式的紧凑型电源。 供应需要串联整流装置,直流 - 直流升压转换器,电容器存储体和半桥转换器,可以共振或非共振操作。 为了紧凑性,转换器以大致高于可听频率的频率工作。 该设计提供了具有最小EMT的高输入功率因数(电感),并且在断电后提供延长的电压保持。

    Control circuit for controlling battery voltage transition rate in an
automotive electrical system
    2.
    发明授权
    Control circuit for controlling battery voltage transition rate in an automotive electrical system 失效
    用于控制汽车电气系统中电池电压转换速率的控制电路

    公开(公告)号:US4263543A

    公开(公告)日:1981-04-21

    申请号:US99217

    申请日:1979-12-03

    CPC classification number: H02J7/16 Y02T10/7005

    Abstract: A control circuit employed within an automotive electrical system for controlling the voltage transition rate between battery float and discharge levels in the presence of a switchable coupling between the battery and standard alternator. The control circuit includes means for regulating the alternator output voltage to said battery float level when the battery is coupled to receive charge current from said alternator, and for transforming said alternator output voltage to said discharge level at a predetermined rate prior to the battery coupling being switched to supply current to the load circuit, and further means for transforming said alternator output voltage to said float level at said predetermined rate after said battery coupling being switched to again receive charge current, whereby said predetermined rate provides a gradual change in the energization of said load circuit in the presence of the recited switchable coupling.

    Abstract translation: 在汽车电气系统中采用的控制电路,用于在电池和标准交流发电机之间的可切换耦合的存在下控制电池浮充和放电水平之间的电压转换速率。 控制电路包括用于当电池耦合以接收来自所述交流发电机的充电电流时调节交流发电机输出电压至所述电池浮充电平的装置,并且在电池耦合之前以预定速率将所述交流发电机输出电压转换为所述放电电平 切换到向负载电路提供电流的装置,以及用于在所述电池耦合被切换以再次接收充电电流之后将所述交流发电机输出电压以所述预定速率转换到所述浮动电平的另一装置,由此所述预定速率提供 所述负载电路在所述可转换耦合的存在下。

    Control circuit for controlling quantity of heat to electrically
heatable windshield
    3.
    发明授权
    Control circuit for controlling quantity of heat to electrically heatable windshield 失效
    控制电路,用于控制电加热挡风玻璃的热量

    公开(公告)号:US4277672A

    公开(公告)日:1981-07-07

    申请号:US99218

    申请日:1979-12-03

    Inventor: Dwight V. Jones

    Abstract: A control circuit for electrically heatable windshields of automotive vehicles which controls the quantity of heat supplied by the vehicle alternator to the windshield heating element to be adequate for deicing the windshield yet limited to avoid windshield damage and to minimize decoupling time of the alternator from the vehicle battery. The control circuit, which employs an inexpensively installed temperature sensor element that senses ambient temperature, responds to the temperature difference between the ambient and a reference deicing temperature and to the supplied heating power for controlling the duration of the heating period.

    Abstract translation: 一种用于机动车辆的电加热挡风玻璃的控制电路,其控制由车辆交流发电机向挡风玻璃加热元件供应的热量足以用于除冰挡风玻璃,但被限制以避免挡风玻璃损坏并使交流发电机与车辆的去耦时间最小化 电池。 使用廉价安装的感测环境温度的温度传感器元件的控制电路响应于环境温度和参考除冰温度之间的温差以及供应的加热功率,以控制加热周期的持续时间。

    Current sourced inverter with saturating output transformer
    4.
    发明授权
    Current sourced inverter with saturating output transformer 失效
    具有饱和输出变压器的电流源逆变器

    公开(公告)号:US4344122A

    公开(公告)日:1982-08-10

    申请号:US184212

    申请日:1980-09-05

    Inventor: Dwight V. Jones

    CPC classification number: H02M3/3388

    Abstract: A Royer circuit, which includes an inverter and a saturating output transformer, is powered from a current source rather than from a voltage source, thereby reducing transistor current overshoot when the output transformer saturates. A current source inductor and a PWM (pulse width modulated) power transistor are series connected in the current return line of the inverter. The PWM power transistor emitter is connected so that potential between it and the common DC input power terminal will be low. This permits the PWM power transistor to be direct-coupled from a low voltage PWM switched mode power supply control circuit. A start-up circuit for supplying start-up power to inverter control circuitry from the DC input source is provided. Feedback loop control for the PWM power transistor is also provided.

    Abstract translation: 包括逆变器和饱和输出变压器的Royer电路由电流源而不是电压源供电,从而在输出变压器饱和时减小晶体管电流过冲。 电流源电感和PWM(脉宽调制)功率晶体管串联连接在逆变器的电流返回线上。 连接PWM功率晶体管发射极,使其与公共直流输入电源端子之间的电位为低电平。 这允许PWM功率晶体管从低电压PWM开关模式电源控制电路直接耦合。 提供了一种从DC输入源向逆变器控制电路提供启动电源的启动电路。 还提供了PWM功率晶体管的反馈环路控制。

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