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    • 4. 发明授权
    • Compact fluorescent lamp dimming system
    • 紧凑荧光灯管系统
    • US5144205A
    • 1992-09-01
    • US450185
    • 1989-12-12
    • Eric R. MottoScott R. Jurell
    • Eric R. MottoScott R. Jurell
    • H05B41/233H05B41/38H05B41/392
    • H05B41/3924H05B41/382Y02B20/19Y02B20/204Y10S315/02Y10S315/07
    • A dimming system provides power from a switch-controlled power source in series with a leakage auto-transformer to a compact fluorescent lamp. The system incorporates a high-frequency resonant converter that provides high voltages to strike and maintain an electric discharge in the lamp. The converter is loaded in parallel by the lamp, whose impedance damps the converter to stabilize lamp operation. An inductor, connected between the leakage auto-transformer and the resonant converter, isolates the switch-controlled power source from the high-frequency voltage. The system can be used with a variety of standard leakage reactance auto-transformers to provide full-range dimming of compact fluorescent lamps from 5 to 100 percent light output with minimal flicker.
    • 调光系统将开关控制电源的电源与泄漏自动变压器串联连接到紧凑型荧光灯。 该系统包含一个高频谐振转换器,它提供高电压来击打并保持灯中的放电。 转换器由灯并联,其阻抗阻止转换器稳定灯的工作。 连接在泄漏自动变压器和谐振转换器之间的电感器将开关控制的电源与高频电压隔离开来。 该系统可用于各种标准漏电自动变压器,以最小的闪烁提供5至100%光输出的紧凑型荧光灯的全范围调光。
    • 10. 发明授权
    • Transformerless fluorescent lamp operating circuit, particularly for a
compact fluorescent lamp, with phase-shifted inverter control
    • 无变压器荧光灯操作电路,特别适用于紧凑型荧光灯,具有相移变频器控制
    • US5349270A
    • 1994-09-20
    • US935004
    • 1992-08-25
    • Ulrich RollWerner BernhardLudwig Reiser
    • Ulrich RollWerner BernhardLudwig Reiser
    • H05B41/233H02M3/338H02M7/538H02M7/5383H03K17/0412H05B41/24H05B41/282H05B37/02
    • H02M7/538H02M3/338H02M7/53832H03K17/04123H05B41/2825Y02B20/185Y02B20/19Y02B70/1433Y02B70/1441Y10S315/07
    • To eliminate the necessity for a saturated or air gap inductance to provide feedback circuit for a self-exciting oscillator including two active electronic switches (T1, T2) , for example MOSFETs, an auxiliary winding (HW1, HW2, . . . HW11) is inductively coupled to the resonance inductance (L2) present in the circuit for the discharge lamp (LP) anyway; and a pulse shaping - phase shifting network (R3, C3; R4, C4 . . . ) , devoid of inherent resonance, coupling the auxiliary winding to the active switching elements. The pulse shaping - phase shifting network is formed of a one or multiple-stage RC low-pass circuit, connected serially between the auxiliary winding and the control input, for example the gate, of the active switching element. The RC network can be constructed with variable elements, for example including PTC resistors, a varistor or the like, and may include a current source, protective circuits to protect against voltage peaks including Zener diodes. The low-pass characteristics of the pulse shaping - phase shifting network permits switching of the active semiconductor switches after the maximum current flow.
    • 为了消除饱和或气隙电感的必要性,为包括两个有源电子开关(T1,T2)(例如MOSFET),辅助绕组(HW1,HW2 ... HW11)的自激振荡器提供反馈电路, 无论如何,电感耦合到存在于放电灯(LP)的电路中的谐振电感(L2); 以及没有固有谐振的脉冲整形 - 相移网络(R3,C3; R4,C4 ...),将辅助绕组耦合到有源开关元件。 脉冲整形 - 移相网络由一个或多级RC低通电路形成,该电路串联连接在辅助绕组和有源开关元件的控制输入端(例如栅极)之间。 RC网络可以用可变元件构成,例如包括PTC电阻器,压敏电阻器等,并且可以包括电流源,用于保护电压峰值的保护电路,包括齐纳二极管。 脉冲整形 - 相移网络的低通特性允许有源半导体开关在最大电流流动之后切换。