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    • 1. 发明授权
    • Induction circuits for lighting
    • 感应电路用于照明
    • US06188179B1
    • 2001-02-13
    • US09051225
    • 1998-04-03
    • John Talbot BoysAndrew William Green
    • John Talbot BoysAndrew William Green
    • H05B3700
    • H05B41/2821C02F2201/32H05B41/24
    • Disclosed is inductive coupling of power to devices having negative resistances, such as gas-filled discharge lamps (fluorescent tubes, neon signs, and the like) from a primary inductive loop, using resonant conditioning of the power provided to the device. A “C” shaped inductor (202) around the loop and a resonating capacitor (406) in parallel with the inductor provide a current source to the lamp (403) from across the capacitor. The circuit is capable of first igniting a lamp using a higher voltage available when the Q of the unloaded circuit is high, then running the lamp or other device at a controlled current. The lamp current is substantially proportional to the primary inductive loop flux, and substantially independent of the lamp resistance. A second inductor (404) in series with the first though not itself a collector of flux acts as a current limit. Applications include lighting, displays (optionally isolated and dimmable), and production of ultraviolet radiation.
    • 公开了使用对设备提供的功率的谐波调节,功率与具有负电阻的器件(例如来自初级感应回路的充气放电灯(荧光管,霓虹灯等))的电感耦合。 围绕环路的“C”形电感器(202)和与电感器并联的谐振电容器(406)从电容器两端向灯(403)提供电流源。 该电路能够在无负载电路的Q为高电平时使用更高的电压点亮灯,然后以受控的电流运行灯或其他设备。 灯电流基本上与初级感应回路通量成比例,并且基本上与灯电阻无关。 与第一电感器(404)串联的第二电感器(404)本身不是磁通的集电极,其作为电流限制。 应用包括照明,显示器(可选隔离和可调光)以及紫外线辐射的生产。
    • 3. 发明授权
    • Electric fence energizer
    • 电动扶梯
    • US6020658A
    • 2000-02-01
    • US952053
    • 1997-11-10
    • Robert Charles Bryan WoodheadJohn Talbot BoysAndrew William Green
    • Robert Charles Bryan WoodheadJohn Talbot BoysAndrew William Green
    • H05C1/04
    • H05C1/04
    • An energy-efficient energizer for an electric fence for controlling livestock or the like, includes an output voltage sensor. By switching to extra storage capacitance and/or altering the charge voltage the energizer varies the duration of the output pulse and perhaps also the pulse voltage according to the sensed output, thus maintaining an effective livestock barrier and consuming high power only when required. Output pulses are about 8 kV (no load) down to 4 kV (wide range of loads). The control algorithm determines the capacitor charging time and initiates a charge sooner if a higher power pulse is to be delivered, so maintaining a constant pulse rate. The energizer includes a 12V DC power option and has a circuit for synthesizing a substantially unipolar pulse having low harmonic content.
    • PCT No.PCT / NZ96 / 00040 Sec。 371日期:1997年11月10日 102(e)1997年11月10日PCT PCT 1996年5月10日PCT公布。 出版物WO96 / 36203 日期:1996年11月14日用于控制牲畜等的电动围栏的节能赋能器包括输出电压传感器。 通过切换到额外的存储电容和/或改变充电电压,激发器根据所感测的输出来改变输出脉冲的持续时间,也可以改变脉冲电压,因此仅在需要时保持有效的家畜屏障并消耗高功率。 输出脉冲为8 kV(无负载)低至4 kV(宽范围的负载)。 控制算法确定电容器充电时间,并且如果要传送较高的功率脉冲,则更快地启动电荷,从而保持恒定的脉冲速率。 激发器包括12V直流电源选项,并且具有用于合成基本上具有低谐波含量的单极性脉冲的电路。
    • 6. 发明授权
    • AC-DC power supply
    • AC-DC电源
    • US06031737A
    • 2000-02-29
    • US051991
    • 1998-09-01
    • Andrew William Green
    • Andrew William Green
    • H02M3/337H02M7/217H02M7/48H02M5/458
    • H02M3/337H02M7/217H02M7/4807Y02B70/1433Y02B70/1441
    • An AC-DC power supply system for receiving a three phase mains supply and outputting a transformed DC supply. The power supply unit has a rectifier circuit (30) providing an output to a three phase inverter circuit (40) to generate a pseudo AC three phase output of higher frequency than the AC supplied to the rectifier circuit (30). A three phase transformer (60) receives the pseudo AC three phase output and transforms the output to a three phase rectifier circuit (70) to generate the output DC supply. The inverter circuit (40) provides a three leg bridge structure with each leg having a switching device one of which is used to provide a phase reference whereas the other two legs control the relative phase shift on each leg to reduce the phase shift relative to the phase reference on one leg and increase the phase shift relative to the phase reference on the other leg.
    • PCT No.PCT / NZ96 / 00119 Sec。 371日期:1998年9月1日 102(e)1998年9月1日PCT PCT 1996年10月24日PCT公布。 WO97 / 17753 PCT出版物 日期1997年5月15日一个用于接收三相电源并输出变换的直流电源的AC-DC电源系统。 电源单元具有向三相逆变器电路(40)提供输出的整流电路(30),以产生比提供给整流电路(30)的AC高的伪AC三相输出。 三相变压器(60)接收伪AC三相输出,并将输出转换成三相整流电路(70)以产生输出DC电源。 逆变器电路(40)提供三脚桥结构,每个腿具有开关装置,其中一个用于提供相位基准,而另外两个腿控制每个腿上的相对相移以减小相对于 在一条腿上增加相位参考,并增加相对于另一条腿上的相位基准的相移。
    • 7. 发明授权
    • Pulse generator for electric fences
    • 电动栅栏脉冲发生器
    • US5767592A
    • 1998-06-16
    • US693168
    • 1996-08-14
    • John Talbot BoysAndrew William GreenRobert Charles Bryan Woodhead
    • John Talbot BoysAndrew William GreenRobert Charles Bryan Woodhead
    • H03K3/57H03K17/80H05C1/04
    • H03K3/57H03K17/80H05C1/04
    • A circuit (700) for an electric fence energizer (examples are 6 or 24 Joule versions) which synthesizes a pulse having a raised cosine waveform at a first or bus voltage uses a ferrite-cored output transformer (701) to multiply the voltage of the pulse to the required level. A raised cosine waveform has a low harmonic content and little filtering of high-power pulses is required in order to minimize electromagnetic emissions. On closure of a switch (707) in series with an inductor (705) a first capacitor bank (703) commences charging a second smaller capacitor bank (704) in parallel with the output primary and after the peak of the pulse any remaining charge is dissipated in a resistor (708) with the aid of a saturable inductor (702), acting as a switch. The saturable inductor may be the output transformer itself for lower output energizers. The output exhibits little or any reversal of polarity when matched to its load. The circuit may also be useful for applications such as strobe flashers in aircraft.
    • PCT No.PCT / NZ94 / 00113 Sec。 371日期:1996年8月14日 102(e)日期1996年8月14日PCT 1994年10月18日PCT PCT。 出版物WO95 / 11550 日期1995年04月27日在第一或总线电压下合成具有升余弦波形的脉冲的电气栅栏激励器(例如6或24焦耳版)的电路(700)使用铁氧体磁芯输出变压器(701) 将脉冲的电压乘以所需的电平。 升余弦波具有低谐波含量,并且需要很少的高功率脉冲滤波以便最小化电磁辐射。 在关闭与电感器(705)串联的开关(707)时,第一电容器组(703)开始对与输出初级并联的第二较小电容器组(704)充电,并且在脉冲峰值之后,任何剩余电荷为 借助于作为开关的可饱和电感器(702)在电阻器(708)中消散。 可饱和电感可能是输出变压器本身用于较低输出的激励器。 当与其负载匹配时,输出极少或任何反转极性。 该电路也可用于诸如飞机中的闪光灯闪光灯的应用。