TRANSISTOR CIRCUIT FOR POWERING A FLUORESCENT LAMP
    2.
    发明申请
    TRANSISTOR CIRCUIT FOR POWERING A FLUORESCENT LAMP 审中-公开
    用于驱动荧光灯的晶体管电路

    公开(公告)号:WO1994022209A1

    公开(公告)日:1994-09-29

    申请号:PCT/US1994001799

    申请日:1994-02-22

    Abstract: A circuit with a transistor common to both the inverter (113) and the boost converter (118) powers a gas discharge lamp (144). In a half-bridge inverter, a boost inductor (108) is coupled between the rectifier (104) and the junction (112) between two switching circuits (114, 116).

    Abstract translation: 具有与逆变器(113)和升压转换器(118)共同的晶体管的电路为气体放电灯(144)供电。 在半桥逆变器中,升压电感器(108)耦合在两个开关电路(114,116)之间的整流器(104)和结(112)之间。

    INTEGRATED EMI/RFI FILTER MAGNETICS
    3.
    发明申请
    INTEGRATED EMI/RFI FILTER MAGNETICS 审中-公开
    集成EMI / RFI滤波器

    公开(公告)号:WO1994010749A1

    公开(公告)日:1994-05-11

    申请号:PCT/US1993009722

    申请日:1993-10-12

    Abstract: An integrated EMI/RFI filter magnetic (200) has differential and common mode inductors wound about an I-core (210). The I-core is juxtaposed with an E-core (202), with the end surfaces (222, 224, 226) of the E-core legs (204, 206, 208) facing the I-core. The magnetic has a substantially closed magnetic path of the differential inductors (300, 302) and the common mode inductors (304, 306).

    Abstract translation: 集成的EMI / RFI滤波器磁(200)具有缠绕在I芯(210)上的差分和共模电感器。 I型芯与E型芯(202)并置,E型芯腿(204,206,208)的端面(222,224,226)面向I型芯。 磁体具有差分电感器(300,302)和共模电感器(304,306)的基本封闭的磁路。

    POWER SUPPLY CIRCUIT
    4.
    发明申请
    POWER SUPPLY CIRCUIT 审中-公开
    电源电路

    公开(公告)号:WO1994003033A1

    公开(公告)日:1994-02-03

    申请号:PCT/US1993006632

    申请日:1993-07-15

    Abstract: A power supply circuit (100) for use in driving fluorescent lamps (102, 104, 106) has a current mode control voltage boost IC (144) which produces a boosted voltage and has a power control input (pin 3) and a frequency control input (pin 4). The lamps are driven by a self oscillating inverter (178, 180, 196, 198) which is powered from the voltage boost IC and which operates at a frequency independent therefrom. In order to dim the lamps a D.C. bias voltage is applied to the power control input. At the same time a commensurate D.C. bias voltage is applied to the frequency control input so as to provide power factor correction in dependence on the power produced by the voltage boost IC. The circuit thus provides a substantially constant, optimum power factor at both full and dimmed light levels.

    Abstract translation: 用于驱动荧光灯(102,104,106)的电源电路(100)具有产生升压电压并具有功率控制输入(引脚3)和频率控制的电流模式控制升压IC(144) 输入(引脚4)。 灯由自振荡逆变器(178,180,196,198)驱动,该自振荡逆变器由升压IC供电并以与其无频率的频率工作。 为了使灯变暗,将D.C.偏置电压施加到功率控制输入。 同时,将相应的直流偏置电压施加到频率控制输入,以便根据由升压IC产生的功率提供功率因数校正。 因此,电路在完全和暗淡的光级处提供基本恒定的最佳功率因数。

    CONTROL CIRCUIT
    5.
    发明申请
    CONTROL CIRCUIT 审中-公开
    控制电路

    公开(公告)号:WO1993003588A1

    公开(公告)日:1993-02-18

    申请号:PCT/US1992006239

    申请日:1992-07-27

    CPC classification number: H05B41/2827 H05B41/28 Y10T307/944 Y10T307/951

    Abstract: A control circuit (C) for controlling fluorescent lamps (102, 104 and 106) from a switch (S) having 'open' and 'closed' positions. The circuit senses whether the switch is (i) open, (ii) closed within less than approximately 0.5 seconds of last being opened, or (iii) closed for the first time or after a time greater than approximately 0.5 seconds after last being opened, and produces one of three output signals respectively dependent thereon. The control circuit uses only a conventional two-position switch and conventional wiring and avoids the need for additional switches and additional wiring.

    SECURE COMPONENT ARRANGEMENT AND METHOD OF SECURING A COMPONENT
    6.
    发明申请
    SECURE COMPONENT ARRANGEMENT AND METHOD OF SECURING A COMPONENT 审中-公开
    安全组件安装和保护组件的方法

    公开(公告)号:WO1992017904A1

    公开(公告)日:1992-10-15

    申请号:PCT/US1992002605

    申请日:1992-04-01

    CPC classification number: H01L23/4093 H01L2924/0002 H01L2924/00

    Abstract: An arrangement for securing a power transistor (4, 6, 8) or like component which is inserted into a printed circuit board (2) in a vertically downward direction. The printed circuit board is housed in a housing (20, 60) whose lower part (20) has upstanding walls (24, 26) with pairs of vertical slots (4A and 4B, 6A and 6B, 8A and 8B). Spring clips (52) are inserted vertically downwardly so that their legs (52A, 52B) engage in the slots and their center portions (54) urge the transistors toward the upstanding walls so that the housing acts as a heat sink for the transistors, obviating the need for additional components. Also, since all insertion is performed vertically from above, assembly can be performed straightforwardly by an automatic insertion machine, resulting in more rapid assembly and increased reliability.

    POWER SUPPLY HAVING HIGH POWER FACTOR WITH CONTROL THAT TRACKS THE INPUT ALTERNATING SUPPLY
    7.
    发明申请
    POWER SUPPLY HAVING HIGH POWER FACTOR WITH CONTROL THAT TRACKS THE INPUT ALTERNATING SUPPLY 审中-公开
    具有跟踪输入替代电源的控制的高功率因数电源

    公开(公告)号:WO1992016085A1

    公开(公告)日:1992-09-17

    申请号:PCT/US1992001752

    申请日:1992-03-06

    CPC classification number: H02M1/4225 H05B41/28 Y02B70/126

    Abstract: A voltge boost power supply, for use in a fluorescent lamp ballast (100), having: an inductance (170) coupled between an alternating supply voltage input (108, 110) and an output (134, 136), a switch (128) for controlling the current carried by the inductance, and a current-mode control IC (144) for producing a PWM control signal to control the switch so as to control the current carried by the inductance and thereby control the voltage across the inductance. The current-mode control IC is coupled (138) to the input so that the frequency of the control signal is modulated in accordance with the alternating supply voltage whereby the frequency of the control signal has a maximum value when the magnitude of the alternating supply voltage is a maximum. The power supply thus exhibits reduced harmonic distortion and increased power factor.

    Abstract translation: 一种用于荧光灯镇流器(100)的电压升压电源,具有:耦合在交流电源电压输入(108,110)和输出(134,136)之间的电感(170),开关(128) 用于控制由电感携带的电流;以及电流模式控制IC(144),用于产生PWM控制信号以控制开关,以便控制由电感携带的电流,从而控制电感两端的电压。 电流模式控制IC被耦合(138)到输入端,使得控制信号的频率根据交流电源电压被调制,由此当交流电源电压的大小时,控制信号的频率具有最大值 是最大的。 因此,电源表现出减少的谐波失真和增加的功率因数。

    SINGLE TRANSISTOR ELECTRONIC BALLAST
    8.
    发明申请
    SINGLE TRANSISTOR ELECTRONIC BALLAST 审中-公开
    单晶电子电子镇流器

    公开(公告)号:WO1996003016A1

    公开(公告)日:1996-02-01

    申请号:PCT/US1995006444

    申请日:1995-05-23

    CPC classification number: H05B41/28 Y10S315/07

    Abstract: An electronic ballast (10) includes a dual function power transistor (16) that supports both power factor correction and inverter functionality. To assist in controlling voltages across this transistor (16) during all phases of operation, two dual function diodes (21, 19) are provided. A boost inductor (14) is coupled to both the dual function power transistor (16) and the bulk energy storage capacitor (22) so that when the dual function power transistor (16) opens, energy from the boost inductor is transferred to the bulk energy storage capacitor (22).

    Abstract translation: 电子镇流器(10)包括支持功率因数校正和逆变器功能的双功能功率晶体管(16)。 为了在所有工作阶段期间帮助控制该晶体管(16)上的电压,提供了两个双功能二极管(21,19)。 升压电感器(14)耦合到双功能功率晶体管(16)和大容量储能电容器(22),使得当双功能功率晶体管(16)打开时,来自升压电感器的能量转移到体积 储能电容器(22)。

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