Operating circuit for a discharge lamp
    1.
    发明授权
    Operating circuit for a discharge lamp 失效
    放电灯的操作电路

    公开(公告)号:US5198728A

    公开(公告)日:1993-03-30

    申请号:US808665

    申请日:1991-12-17

    CPC分类号: H05B41/392 H05B41/2882

    摘要: A switched mode power supply (SNT) is coupled to a source of d-c energy (U.sub.Batt) and provides electrical energy to a lamp within widely varying limits. The switching conditions of the switched mode power supply are controlled by an operation control circuit (ADD) which has a current sensing resistor, serially connected to the lamp, to provide a lamp current signal, and a voltage divider (R2, R3) connected across the lamp to sense lamp voltage and provide a lamp voltage signal. The lamp current signal and the lamp voltage signal are added, compared in a comparator formed by an operational amplifier (IC2-A), with respect to a reference setting power level, and the output signal from the comparator is coupled back to the switched mode power supply to control the switching rate thereof, based on the instantaneous lamp current and lamp voltage. Excess voltage can be compensated by providing either an active semiconductor switching network (T1, T2, FIG. 3) or a passive semiconductor switch (ZD), which affects the added current-voltage signal applied to the comparator (IC2-A).

    摘要翻译: 开关模式电源(SNT)耦合到d-c能量源(UBatt),并在广泛变化的范围内为灯提供电能。 开关模式电源的开关条件由具有串联连接到灯的电流检测电阻器以提供灯电流信号的操作控制电路(ADD)控制,并且分压器(R2,R3)跨越 该灯用于感测灯电压并提供灯电压信号。 在由运算放大器(IC2-A)形成的比较器中比较相对于参考设定功率电平的灯电流信号和灯电压信号,并且来自比较器的输出信号被耦合回到切换模式 基于瞬时灯电流和灯电压来控制其开关速率的电源。 可以通过提供影响施加到比较器(IC2-A)的附加电流 - 电压信号的有源半导体开关网络(T1,T2,图3)或无源半导体开关(ZD)来补偿过大的电压。

    High-pressure discharge lamp with pulsed inverter operating circuit, and
method of operating a discharge lamp
    2.
    发明授权
    High-pressure discharge lamp with pulsed inverter operating circuit, and method of operating a discharge lamp 失效
    具有脉冲逆变器工作电路的高压放电灯,以及操作放电灯的方法

    公开(公告)号:US5343125A

    公开(公告)日:1994-08-30

    申请号:US786502

    申请日:1991-11-01

    摘要: To ensure ignition of a high-pressure discharge lamp, for example a metal vapor halogen high-pressure dicharge lamp which has an ignition circuit, and is operated by direct current from an inverter circuit controlled for pulse width modulation, current flow to the lamp is extended in time upon initial energization thereof so that an initial hot spot which forms on an electrode can remain hot to establish a stabilized arc. This extension of current flow can be obtained by an R/C circuit in parallel to the output or storage capacitor (C.sub.A) of the inverter circuit (FIG. 1) or by an NTC resistor (H) in series with the lamp, or by a resistor which is short-circuited by a relay contact as the lamp operates, or the like.

    摘要翻译: 为了确保高压放电灯点燃,例如具有点火电路的金属蒸气卤素高压千分表灯,并且由控制脉冲宽度调制的逆变器电路的直流电流操作,到灯的电流是 在初始通电时延长时间,使得在电极上形成的初始热点可以保持热,以建立稳定的电弧。 电流流动的这种扩展可以通过与逆变器电路(图1)的输出或存储电容器(CA)并联的R / C电路或与灯串联的NTC电阻器(H),或通过 当灯操作时由继电器触点短路的电阻器等。

    Regulated rectifier d.c. power supply
    3.
    发明授权
    Regulated rectifier d.c. power supply 失效
    调节整流器直流 电源

    公开(公告)号:US4792887A

    公开(公告)日:1988-12-20

    申请号:US84466

    申请日:1987-08-10

    摘要: A control circuit for controlling a known active harmonic filter operating as a step-up converter in a power supply with sinusoidal network current input and a power factor of almost unity. The step-up converter comprises: a main rectifier, a storage inductance (L.sub.S), a cross-connected high-speed transistor (T.sub.Q), a diode (D1) and a power storage capacitor (C.sub.L). The high-speed transistor (T.sub.Q) is controlled by a first threshold switch (STc) whose input is controlled by a control capacitor (C12) coupled to receive a signal representative of instantaneous rectified d.c. output voltage (U.sub.E), instantaneous power output voltage (U.sub.o) and a signal representative of the charge state of the inductance. The inductance charge signal is obtained from a voltage jump (ringing voltage) between the inductance and the diode (D1) by sensing a flank of an oscillation voltage occurring at the diode by a RC circuit (R8, C10), which triggers a second threshold switch (STa) to control charge reversal and recharge of the capacitor (C12), thus determining the time instants of operation of the first threshold switch to control the cross-connected electronic switch (T.sub.Q) to conduction, and hence re-storing of electrical energy in the inductance.

    摘要翻译: 控制电路,用于控制在具有正弦网络电流输入的电源中作为升压转换器工作的已知有源谐波滤波器和几乎一致的功率因数。 升压转换器包括:主整流器,存储电感(LS),交叉连接的高速晶体管(TQ),二极管(D1)和功率存储电容器(CL)。 高速晶体管(TQ)由第一阈值开关(STc)控制,其输入由耦合以接收代表瞬时整流直流的信号的控制电容器(C12)控制。 输出电压(UE),瞬时功率输出电压(Uo)和代表电感充电状态的信号。 感应电感和二极管(D1)之间的电压跳变(振铃电压)通过感应二极管上由RC电路(R8,C10)产生的振荡电压的一侧产生电感充电信号,触发第二阈值 开关(STa)来控制电容器(C12)的电荷反转和再充电,从而确定第一阈值开关的操作时间,以控制交叉连接的电子开关(TQ)导通,从而重新存储电 电感中的能量。

    Discharge lamp typically a sodium high-pressure discharge lamp, from an
a-c power network
    5.
    发明授权
    Discharge lamp typically a sodium high-pressure discharge lamp, from an a-c power network 失效
    放电灯通常是来自a-c电力网络的钠高压放电灯

    公开(公告)号:US5739644A

    公开(公告)日:1998-04-14

    申请号:US399750

    申请日:1995-03-07

    摘要: To provide for effective control of a discharge lamp, typically, a sodium gh pressure discharge lamp, which operates in two phases, namely, a power pulse phase, followed by a holding phase, without extensive and complex electronic circuitry, two individual oscillator systems are provided, one for each phase; the oscillator systems include a first power burst oscillator formed as a first half bridge by two transistors (T1, T2), and an individual connecting current limiting inductance (L1) to the lamp (E), and a second oscillator including a two-transistor second half bridge (T3, T4) and an individual current limiting inductance (L2) coupled to the lamp. The respective oscillators are controlled, in a closed control loop, by a burst generator (BG) and a holding pulse generator (SG), each of which provide their signals to a logic circuit (LK) which provides for exclusive control of the respective first or second half bridge. A lamp voltage sensing circuit (C4, R2) taps lamp operating voltage, which is compared with a command signal to control through a repetition frequency control generator (WG), the recurrence rate of the bursts from the power bursts generator (BG). The lamp starting circuit (4) can also be controlled from the sensed signal by comparison with a reference in a second comparator (K) and suitably applied to an ignition circuit by an ignition monitoring logic. A pair of electrolytic capacitors of essentially the same value is connected across the d-c supply and their midjunction to the lamp.

    摘要翻译: 为了提供有效控制放电灯(通常为两相工作的钠高压放电灯),即功率脉冲相位,随后是保持阶段,没有广泛和复杂的电子电路,两个单独的振荡器系统是 为每个阶段提供一个; 振荡器系统包括通过两个晶体管(T1,T2)形成为第一半桥的第一功率脉冲串振荡器和与灯(E)的单独的连接限流电感(L1),以及包括双晶体管 第二半桥(T3,T4)和耦合到灯的单独的限流电感(L2)。 相应的振荡器在封闭的控制回路中被脉冲串发生器(BG)和保持脉冲发生器(SG)控制,每个脉冲发生器(SG)向逻辑电路(LK)提供信号,逻辑电路(LK)提供对相应的第一 或后半桥。 灯电压检测电路(C4,R2)将灯操作电压与通过重复频率控制发生器(WG)控制的命令信号进行比较,来自功率脉冲串发生器(BG)的脉冲串的再现速率。 灯启动电路(4)也可以通过与第二比较器(K)中的参考值进行比较,从感测信号进行控制,并通过点火监控逻辑适当地施加到点火电路。 一对基本相同值的电解电容器连接在d-c电源及其与中间连接的灯上。

    Method to operate a discharge lamp, and circuit arrangement for
operation of the discharge lamp
    7.
    发明授权
    Method to operate a discharge lamp, and circuit arrangement for operation of the discharge lamp 失效
    在发生声共振时操作不稳定操作的放电灯的方法和用于放电灯的操作电路的方法

    公开(公告)号:US5680015A

    公开(公告)日:1997-10-21

    申请号:US539882

    申请日:1995-10-06

    CPC分类号: H05B41/2928 Y02B20/208

    摘要: To operate a discharge lamp, and more particularly a low-power high-pressure discharge lamp, only in quiet or stable lamp operation, a microprocessor (MC) is provided which establishes a test phase of limited time duration during which the frequency of operation of the lamp is varied by frequency modulation within a predetermined range. Lamp operation is monitored, for example by deriving a test voltage across a coupling capacitor (C6) receiving lamp current. If the monitored voltage, which is representative of lamp operation, shows that the lamp operates quietly and stably, the then pertaining frequency is stored by the microprocessor and, after the test phase is finished, the lamp is operated within a frequency window formed by the largest number of contiguous modulation frequencies which are suitable for, or result in, stable lamp operation. The test phase is carried out repetitively, at least upon each energization of the lamp, so that different operating characteristics of the lamp (e.g. due to changes in temperature, aging, or the like) are compensated.

    摘要翻译: 为了操作放电灯,特别是低功率高压放电灯,仅在安静或稳定的灯操作中,提供微处理器(MC),其建立有限持续时间的测试阶段,在该期间,操作频率 该灯由预定范围内的频率调制变化。 监视灯操作,例如通过在接收灯电流的耦合电容器(C6)上导出测试电压。 如果代表灯操作的监测电压表明灯静音稳定地运行,则微处理器存储随之而来的频率,并且在测试阶段完成之后,灯在由 适用于或导致稳定的灯操作的最大数量的连续调制频率。 至少在灯的每次通电时,重复地执行测试阶段,从而补偿灯的不同操作特性(例如由于温度,老化等的变化)。

    Oscillation generator for an ultrasonic liquid atomizer
    8.
    发明授权
    Oscillation generator for an ultrasonic liquid atomizer 失效
    超声波液体雾化器的振荡发生器

    公开(公告)号:US4336509A

    公开(公告)日:1982-06-22

    申请号:US122596

    申请日:1980-02-19

    申请人: Franz Bernitz

    发明人: Franz Bernitz

    摘要: The oscillation generator includes an oscillator circuit, a push-pull amplifier with inductive positive feedback connected in the circuit, a piezoceramic atomizer vibrator element, and a load-dependent regenerative feedback coupling connected to the circuit. The coupling is in the form of a tunable frequency-selective sensor having outputs connected to the inputs of the amplifier.

    摘要翻译: 振荡发生器包括振荡电路,电路中连接有电感正反馈的推挽放大器,压电陶瓷雾化器振子元件和连接到电路的依赖负载的再生反馈耦合器。 耦合是具有连接到放大器的输入的输出的可调谐频率选择性传感器的形式。

    Method to operate a high-pressure discharge lamp suitable for horizontal
arc position
    9.
    发明授权
    Method to operate a high-pressure discharge lamp suitable for horizontal arc position 失效
    操作适用于水平弧位置的高压放电灯的方法

    公开(公告)号:US5436533A

    公开(公告)日:1995-07-25

    申请号:US247074

    申请日:1994-05-20

    CPC分类号: H05B41/2928 Y02B20/208

    摘要: To prevent bowing of the arc of a high-pressure discharge lamp operated horizontally, the lamp is supplied with alternating current of between 10 kHz and 100 kHz, in which the frequency and wave shape of the alternating current portions of the supply are so selected that standing radial acoustic resonances will be formed within the discharge medium or fill in the discharge vessel, which standing radially directed acoustic resonances suppress or counteract bending of the discharge arc due to convection phenomena.

    摘要翻译: 为了防止水平操作的高压放电灯的弧的弯曲,灯被提供在10kHz到100kHz之间的交流电,其中电源的交流部分的频率和波形被选择成使得 在放电介质内形成静止的径向声共振,或者填充在放电容器中,由于对流现象,立体放射状声共振抑制或抵消放电弧的弯曲。

    Lamp operating accessory circuit construction
    10.
    发明授权
    Lamp operating accessory circuit construction 失效
    灯操作附件电路结构

    公开(公告)号:US5540595A

    公开(公告)日:1996-07-30

    申请号:US288553

    申请日:1994-08-10

    IPC分类号: H05B39/00 H05B41/00 H01R13/58

    CPC分类号: H05B41/00 H05B39/00

    摘要: To permit, selectively and in accordance with safety or standardization rirements, connection of different electrical supply devices, such as extending cables or terminal posts, pins or clamps, to a single, standardized operating or accessory circuit retained on a circuit board (2) within a housing (1), the housing is formed with a connection receiving portion (5a) selectively differently constructed connection parts (3, 3') forming insert elements are provided, dimensioned and shaped to fit into the receiving portion of the housing. The connection parts, forming the insert element, thus can be constructed according to the respective safety or standardization requirements without otherwise affecting the structure of the substantially more expensive operating or accessory circuit in the housing. A strain relief can be integrated with the construction, for example secured to the housing and/or the connection part to clamp wires or cables projecting from the housing, attached to terminal pins, posts or clamps of one form of connection part, or directly from another form of connection part.

    摘要翻译: 为了允许选择性地并且根据安全或标准化要求将不同的电源装置(诸如延长电缆或端子柱,销或夹具)连接到保持在电路板(2)内的单个标准化操作或附件电路 壳体(1),壳体形成有连接接收部分(5a),选择性地不同地构造形成插入元件的连接部分(3,3'),其尺寸和形状适合于装配到壳体的容纳部分中。 因此,形成插入元件的连接部件可以根据相应的安全性或标准化要求来构造,而不会另外影响壳体中实质上更昂贵的操作或附件回路的结构。 应变消除可以与结构集成,例如固定到壳体和/或连接部分,以夹紧从壳体伸出的电线或电缆,附接到端子销,一种形式的连接部件的柱或夹具,或直接从 另一种形式的连接部分。