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    • 4. 发明授权
    • Limiting driver for switch-mode power amplifier
    • 开关模式功率放大器限制驱动器
    • US09397621B2
    • 2016-07-19
    • US14447452
    • 2014-07-30
    • Eridan Communications, Inc.
    • Earl W McCune, Jr.
    • H03F3/217H03F3/193H03F1/30H03F1/32H03F3/45H03F1/02
    • H03F3/2171H03F1/0283H03F1/301H03F1/3205H03F3/193H03F3/195H03F3/45179H03F3/45183H03F3/45381H03F2200/451H03F2203/45112H03G1/0029
    • A switch-mode RFPA driver includes first and second field-effect transistors (FETs) arranged in a totem-pole-like configuration. The switch-mode RFPA driver operates to generate a switch-mode RFPA drive signal having a generally square-wave-like waveform from an input RF signal having a generally sinusoidal-like waveform. To maximize high-frequency operation and avoid distorting the switch-mode RFPA drive signal, the switch-mode RFPA driver is designed so that its output can be connected directly to the input of the switch-mode RFPA to be driven, i.e., without using or requiring the use of an AC coupling capacitor. The first and second FETs of the switch-mode RFPA driver are designed and configured to limit and control the upper and lower magnitude levels of the switch-mode RFPA drive signal to levels suitable for switching the switch-mode RFPA directly, obviating any need for DC biasing at the input of the switch-mode RFPA.
    • 开关模式RFPA驱动器包括以图腾柱状配置布置的第一和第二场效应晶体管(FET)。 开关模式RFPA驱动器用于从具有大致正弦波状波形的输入RF信号产生具有大致方波形波形的开关模式RFPA驱动信号。 为了最大化高频操作并避免开关模式RFPA驱动信号失真,开关模式RFPA驱动器被设计成使得其输出可以直接连接到要驱动的开关模式RFPA的输入端,即不使用 或需要使用交流耦合电容器。 开关模式RFPA驱动器的第一和第二FET被设计和配置为将开关模式RFPA驱动信号的上限和下限幅度电平限制和控制到适合于直接切换开关模式RFPA的电平,从而避免了 直流偏置在开关模式RFPA的输入端。
    • 5. 发明授权
    • Power conversion and control systems and methods for solid-state lighting
    • 电源转换和控制系统和固态照明方法
    • US09265105B2
    • 2016-02-16
    • US13859869
    • 2013-04-10
    • Earl W. McCune, Jr.
    • Earl W. McCune, Jr.
    • H05B37/02H05B33/08
    • H05B33/0815H05B37/02
    • A power conversion and control system suitable for use with solid-state lighting and conventional TRIAC dimmer switching includes an alternating current to direct current (AC-DC) converter configured to convert AC power from the AC mains to DC power and a controller configured to control dimming of a light-emitting load depending on the magnitude of a distorted AC voltage from an external TRIAC dimmer switch relative to the magnitude of the DC voltage Vdc produced by the AC-DC converter. To prevent the TRIAC in the external TRIAC dimmer switch from turning off in situations where the AC-DC converter is disconnected from the AC mains or not drawing any current from the AC mains, the power conversion and control system may further include circuitry that maintains the current through the TRIAC above its minimum holding current.
    • 适用于固态照明和常规TRIAC调光器切换的电力转换和控制系统包括交流电流至直流(AC-DC)转换器,其被配置为将来自AC电源的AC电力转换为DC电力,并且控制器被配置为控制 取决于来自外部TRIAC调光器开关的失真的交流电压的大小相对于由AC-DC转换器产生的DC电压Vdc的大小来调光发光负载。 为了防止在AC-DC转换器与交流电源断开或未从交流电源断开任何电流的情况下外部TRIAC调光开关中的TRIAC关闭,电源转换和控制系统还可以包括电路, 通过TRIAC的电流超过其最小保持电流。
    • 6. 发明授权
    • Solid-state lighting dimming
    • 固态照明调光
    • US09179508B2
    • 2015-11-03
    • US14152089
    • 2014-01-10
    • Earl W. McCune, Jr.
    • Earl W. McCune, Jr.
    • H05B33/08
    • H05B33/0809H05B33/0845
    • A solid-state lighting (SSL) system having dimming capability includes an SSL driver having a current control circuit configured to control current flow and, consequently, the brightness of light emitted by a light-emitting load. The magnitude of current flowing through the light-emitting load is set and controlled depending on a dim control signal, which is generated based on the value of a scaled alternating current (AC) power signal. The scaled AC power signal is generated by an AC scaling unit, which scales an input AC power signal provided by an AC power source. The extent to which the input AC power signal is scaled determines the value of the dim control signal and, consequently, the magnitude of current flow and resultant dimming of the light-emitting load. Pulse-width modulation of the light-emitting load current may be optionally combined with the current-control-based dimming to widen the overall dimming range.
    • 具有调光能力的固态照明(SSL)系统包括具有电流控制电路的SSL驱动器,该电流控制电路被配置为控制电流流动,并且因此控制由发光负载发射的光的亮度。 流过发光负载的电流的大小根据根据缩放的交流(AC)功率信号的值产生的调光控制信号来设定和控制。 缩放的AC电力信号由AC缩放单元生成,AC缩放单元缩放由AC电源提供的输入AC电力信号。 输入AC电力信号被缩放的程度确定了调光控制信号的值,并因此确定了发光负载的电流流动的大小和最终的调光。 发光负载电流的脉冲宽度调制可以可选地与基于电流控制的调光组合以扩大整体调光范围。
    • 7. 发明授权
    • Power conversion and control systems and methods for solid-state lighting
    • 电源转换和控制系统和固态照明方法
    • US08760078B2
    • 2014-06-24
    • US12897066
    • 2010-10-04
    • Earl W. McCune, Jr.
    • Earl W. McCune, Jr.
    • H05B37/02
    • H05B33/0815Y02B20/348
    • A solid-state lighting system comprises a plurality of light-emitting devices (e.g., light-emitting diodes) and an alternating current to direct current (AC-DC) converter that converts AC power to DC power for powering the plurality of light-emitting devices. The AC-DC converter is configured to perform AC-DC conversion directly, without the need for or use of a bridge rectifier or step-down transformer. According to one aspect of the invention, the light-emitting devices of the solid-state lighting system are autonomous and individually powered by a plurality of DC power supplies generated from the DC power produced by the AC-DC converter. According to another aspect, a plurality of phase-offset dimmer control signals are generated based on waveform distortions in a dimming signal produced by a conventional dimmer switch. The phase-offset dimmer control signals are used to individually control the dimming of the light-emitting devices.
    • 固态照明系统包括多个发光装置(例如发光二极管)和交流电直流(AC-DC)转换器,其将交流电转换成直流电,以为多个发光 设备。 AC-DC转换器被配置为直接执行AC-DC转换,而不需要或使用桥式整流器或降压变压器。 根据本发明的一个方面,固态照明系统的发光装置是由AC-DC转换器产生的直流电力产生的多个直流电源自主地分别供电的。 根据另一方面,基于由常规调光开关产生的调光信号中的波形失真产生多个相位偏移调光控制信号。 相位偏移调光控制信号用于分别控制发光装置的调光。