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    • 71. 发明申请
    • BALLAST CIRCUIT
    • 镇流器电路
    • WO00040063A1
    • 2000-07-06
    • PCT/EP1999/010226
    • 1999-12-15
    • H05B41/24H05B41/282H05B41/392
    • H05B41/3925H05B41/2827Y02B20/185
    • Lamp voltage or current obtained from a self-oscillating converter is stabilized by a feedback circuit. Gates of the switching transistors are connected to output windings of a current transformer whose input current winding is in series with the resonant load lamp circuit. The lamp voltage or current is sensed, and the resulting signal is used to control current through an auxiliary control winding on the current transformer. Preferably, two opposite conductivity type control transistors are connected in parallel across the control winding, and low-pass filtered DC signals corresponding to the lamp voltage bias the control transistors.
    • 由自振荡转换器获得的灯电压或电流由反馈电路稳定。 开关晶体管的栅极连接到其输入电流绕组与谐振负载灯电路串联的电流互感器的输出绕组。 检测灯电压或电流,得到的信号用于控制电流互感器上的辅助控制绕组的电流。 优选地,两个相反的导电型控制晶体管并联连接在控制绕组上,并且对应于灯电压的低通滤波DC信号偏置控制晶体管。
    • 72. 发明申请
    • DIMMABLE ELECTRONIC BALLAST WITH SINGLE STAGE FEEDBACK INVERTER
    • 具有单级反馈逆变器的双电子镇流器
    • WO00040058A1
    • 2000-07-06
    • PCT/EP1999/010195
    • 1999-12-17
    • H05B41/24H05B41/28H05B41/282H05B41/298H05B41/392H05B41/00
    • H05B41/2828H05B41/28H05B41/2986H05B41/3925Y02B20/186
    • A high frequency dimmable electronic ballast comprising a single stage feedback inverter and power factor controller which regulates the power delivered to a load by the inverter at low dim levels such that sufficient lamp crest factor is maintained for load changes from 100 % to 10 %. Sufficient load current crest factors are obtained for variable load (dimming) by operating the ballast in a closed loop configuration, whereby the average value of the load current and/or power is measured and regulated. In one aspect of the present invention, an electronic ballast comprises a single stage feedback inverter for supplying high frequency power to a load in response to driving signals; current sensing means for sensing current flowing in the load due to the supplied load power; voltage detection means for detecting a peak voltage of said load due to the supplied load power; dimming means for generating an illumination signal corresponding to a desired power level of the load; and a controller connected to the single stage feedback inverter and dimming means, for generating the driving signals to cause the inverter to generate the desired power level to the load, whereby the controller processes the sensed load current and the detected peak load voltage to maintain a sufficient lamp crest factor at the desired load power level.
    • 一种高频可调光电子镇流器,包括单级反馈逆变器和功率因数控制器,其调节逆变器在低昏暗水平下传递给负载的功率,使得足够的灯峰值因子保持负载从100%变化到10%。 通过在闭环配置中操作镇流器,可以获得足够的负载电流波峰因数,用于可变负载(调光),从而测量和调节负载电流和/或功率的平均值。 在本发明的一个方面,电子镇流器包括单级反馈逆变器,用于响应于驱动信号向负载提供高频功率; 电流感测装置,用于感测由于所提供的负载功率而在负载中流动的电流; 电压检测装置,用于检测由所提供的负载功率引起的所述负载的峰值电压; 用于产生对应于所述负载的期望功率电平的照明信号的调光装置; 以及连接到单级反馈逆变器和调光装置的控制器,用于产生驱动信号以使逆变器向负载产生期望的功率电平,由此控制器处理感测到的负载电流和检测到的峰值负载电压,以维持 在所需负载功率水平下的足够的灯峰值因数。
    • 73. 发明申请
    • CIRCUIT ARRANGEMENT FOR OPERATING A DISCHARGE LAMP
    • 用于操作放电灯的电路布置
    • WO00033621A1
    • 2000-06-08
    • PCT/EP1999/008633
    • 1999-11-10
    • H05B41/24H05B41/16H05B41/282H05B41/392
    • H05B41/3925H05B41/2828
    • A circuit arrangement for supplying a controlled substantially constant level of electrical power to a discharge lamp in a load circuit includes a feedback loop responsive to a comparison or difference between a power measure signal corresponding to electrical power consumed by the lamp and a reference signal corresponding to a desired consumed power. The power measure signal is formed by a power measure signal forming circuit which includes a one quadrant multiplier which receives at a pair of inputs respective lamp voltage and lamp current measure signals output from a sample and hold device arranged for sampling both a signal indicative of instantaneous lamp voltage and a signal indicative of instantaneous lamp current. The sampling is done at instants at which a signal which is indicative of the derivative of the lamp voltage passes through zero in a predetermined direction. The latter signal constitutes the current through a capacitor which is coupled at one end to a voltage that is indicative of the instantaneous lamp voltage and at the other end to a voltage clamp.
    • 用于向负载电路中的放电灯提供受控的基本上恒定的电功率的电路装置包括响应于对应于由灯消耗的电功率的功率测量信号与对应于灯的参考信号之间的比较或差的反馈回路 所需的消耗功率。 功率测量信号由功率测量信号形成电路形成,功率测量信号形成电路包括一个象限乘法器,其在一对输入端接收相应的灯电压和灯电流测量信号,该采样和保持装置被布置成对指示瞬时 灯电压和表示瞬时灯电流的信号。 在表示灯电压的导数的信号在预定方向上通过零的时刻进行采样。 后一信号构成通过电容器的电流,该电容器在一端耦合到表示瞬时灯电压的电压,另一端耦合到电压钳位。
    • 74. 发明申请
    • BALLAST POWER CONTROL CIRCUIT
    • 镇流器功率控制电路
    • WO00022892A2
    • 2000-04-20
    • PCT/US1999/022378
    • 1999-09-28
    • G05F1/12G05F1/652H05B37/02H05B41/39H05B41/392H05B41/40
    • G05F1/12G05F1/652H05B37/0263H05B41/39H05B41/3921H05B41/40
    • A ballast circuit for energizing a lamp includes an inductive element coupled to an input terminal and a capacitive element coupled to the inductive element in parallel with the lamp. In one embodiment, the capacitive element includes a plurality of capacitors each of which is coupled in series with a switch to control the total capacitance provided by the capacitors. By controlling the total capacitance, the intensity of light emitted by the lamp can be selected. In another embodiment, a switching element is coupled across one of the capacitors for providing a selected capacitance to the circuit for controlling the lamp light intensity. In a further embodiment, a transformer has a first winding coupled in series with the capacitive element with the inductive impedance of the first winding being controlled via a second transformer winding coupled to a control circuit. In another embodiment, a ballast circuit includes a transformer for introducing a series current into the circuit for subsequent detection by a detection circuit. This arrangement can be used to send a data signal from one point in the circuit to another which can be used to determine a lamp light intensity level.
    • 用于激励灯的镇流器电路包括耦合到输入端子的电感元件和耦合到与灯并联的电感元件的电容元件。 在一个实施例中,电容元件包括多个电容器,每个电容器与开关串联耦合,用于控制由电容器产生的电容。 通过控制总容量,可以选择灯发出的光的强度。 在另一个实施例中,开关元件耦合在电容器的两端,使得所选择的电容被提供给用于控制灯的光强度的电路。 在又一个实施例中,变压器具有与电容元件串联耦合的第一绕组,第一绕组的电感性阻抗经由耦合到控制电路的第二变压器绕组来控制。 在另一个实施例中,镇流器电路包括用于将串行电流引入到电路中用于随后由检测电路进行检测的变压器。 该系统可用于从电路中的一个点向另一个点发送数据信号,该数据信号可用于确定灯的光强度级别。
    • 76. 发明申请
    • BALLAST CIRCUIT WITH LAMP CURRENT REGULATING CIRCUIT
    • 具有灯电流调节电路的电压电路
    • WO00015013A2
    • 2000-03-16
    • PCT/US1999/020293
    • 1999-09-03
    • H02M1/00H02M1/42H05B41/28H05B41/282H05B41/392
    • H02M1/4258H05B41/28H05B41/2822H05B41/2824H05B41/3921Y02B70/126
    • A circuit having a full bridge configuration with a single actively biased switching element. In one embodiment, the circuit is a ballast circuit having a full bridge inverter with one switching element. The bridge includes a diode coupled to the switching element such that the diode and the switching element are coupled between positive and negative rails of the inverter. The bridge further includes first and second capacitors coupled end to end across the positive and negative rails. The ballast circuit can be coupled to a rectifier/boost circuit having a boost inductor coupled to the inverter circuit. In an exemplary embodiment, a ballast circuit includes an inverter circuit having a switching element with a conduction state controlled by a control circuit which limits a voltage applied to the lamp. The control circuit provides a conduction control signal to a duty cycle control circuit. The conduction control signal alternately biases the switching element to conductive and non-conductive states at a first duty cycle when the lamp voltage is below a predetermined level. When the lamp voltage becomes greater than the predetermined level, the duty cycle control circuit decreases the switching element to a second duty cycle, which is less than the first duty cycle, to reduce the voltage at the lamp.
    • 具有全桥配置的电路,其具有单个主动偏置的开关元件。 在一个实施例中,电路是具有一个开关元件的全桥逆变器的镇流器电路。 桥接器包括耦合到开关元件的二极管,使得二极管和开关元件耦合在逆变器的正极和负极之间。 该桥还包括跨越正和负极轨道端对端地耦合的第一和第二电容器。 镇流器电路可以耦合到具有耦合到逆变器电路的升压电感器的整流器/升压电路。 在示例性实施例中,镇流器电路包括具有由控制电路控制的导通状态的开关元件的逆变器电路,其限制施加到灯的电压。 控制电路向占空比控制电路提供导通控制信号。 当灯电压低于预定电平时,导通控制信号以第一占空比将开关元件交替地偏置为导通状态和非导通状态。 当灯电压变得大于预定电平时,占空比控制电路将开关元件减小到小于第一占空比的第二占空比,以降低灯处的电压。
    • 78. 发明申请
    • CIRCUIT FOR OPERATING A UV-LAMP IN A DEGERMINATING REACTOR
    • 电路是否运行的UV灯一ENTKEIMUNGSREAKTOR
    • WO99062567A1
    • 1999-12-09
    • PCT/EP1999/001704
    • 1999-03-16
    • C02F1/32H05B41/392A61L2/10
    • C02F1/325C02F2201/326H05B41/3922
    • The aim of the invention is to ensure that the light intensity emitted by a UV-lamp (1) in a degermination reactor maintains a certain value even as the UV-lamp (1) ages and does not fall below a minimum value. To this end, a sensor (7) is allocated to said UV-lamp (1). The light intensity value detected by the sensor (7) is compared with a setpoint value and a minimum value in a comparing device (5). Said setpoint value and said minimum value are stored in a memory (8). By controlling corresponding circuit components (14, 13), the comparing device (5) ensures that when the light intensity measured by the sensor (7) falls below the setpoint value, the electronic control gear (13) which supplies the operating voltage for the UV-lamp (1) is run up until the sensor (7) reads the original light intensity again. If this setpoint value cannot be maintained as the lamp continues to age and the light intensity measured by the sensor (7) falls below the minimum value stored in the memory (8) as a result, an alarm device (18) is triggered by the comparing device (5), by means of the corresponding circuit components (14), and the flow of water is stopped (17).
    • 为了确保在Entkeimungsreaktor发射的光强度的UV灯(1)的也在老化UV灯的处理(1)保持一定的值,并且不低于最小值,该UV灯是一个传感器(1)( 7)分配。 在由该传感器(7)来确定光强度值在比较装置(5)配有一个在存储器(8),并存储在该存储器中的最小值存储的设定值进行比较。 所述(5)确保通过控制的降低期间测量的对应的电路部件(14,13)的比较装置的所述传感器(7)的下面所需的值的光强度,该电子镇流器(13),它提供了UV灯的工作电压(1) 被引导时,由(7)测得的传感器返回到原始的光强度。 该设定点可以是与灯(1)的逐渐老龄化不保持,因此由传感器减小(7)那些在存储器中的光强度的测量值(8)存储在由所述比较装置(5)与相应的确定的最小值 电路部件(14)的报警器(18),触发关闭,水流(17)。