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    • 3. 发明授权
    • HID lamp ballast with controlled DC step down circuit
    • HID灯镇流器带受控直流降压电路
    • US08222834B2
    • 2012-07-17
    • US12582173
    • 2009-10-20
    • Katsuyoshi NakadaTomoyuki NakanoJunichi HasegawaKoji Watanabe
    • Katsuyoshi NakadaTomoyuki NakanoJunichi HasegawaKoji Watanabe
    • H05B37/02H05B39/04H05B41/36G05F1/00H05B37/00H05B39/00H05B41/00H05B39/02H05B41/16H05B41/24
    • H05B41/2886H05B41/2926
    • An electronic ballast is provided for powering a high intensity discharge lamp. A voltage step-down circuit is arranged to reduce an input DC voltage. An inverter circuit includes at least one high frequency switching element is and arranged to convert the reduced voltage to a high frequency AC voltage. A resonant circuit receives the high frequency voltage and is further coupled to the discharge lamp. A voltage step-down control circuit controls the DC voltage output from the voltage step-down circuit. A driving circuit supplies a driving signal to the switching element of the inverter, and further adjusts a driving frequency of the driving signal, thereby controlling the high-frequency voltage. The high frequency voltage in a first operating mode is controlled to a low level wherein the lamp is prevented from starting. The high frequency voltage in a second operating mode is controlled to a high level wherein the discharge lamp can be started.
    • 提供电子镇流器用于为高强度放电灯供电。 布置降压电路以降低输入直流电压。 逆变器电路包括至少一个高频开关元件,并且被布置为将降低的电压转换为高频AC电压。 谐振电路接收高频电压并且进一步耦合到放电灯。 电压降压控制电路控制从降压电路输出的直流电压。 驱动电路将驱动信号提供给逆变器的开关元件,并进一步调节驱动信号的驱动频率,从而控制高频电压。 在第一操作模式中的高频电压被控制到低电平,其中防止灯起动。 第二工作模式下的高频电压被控制到可以启动放电灯的高电平。
    • 4. 发明授权
    • Discharge lamp ballast having an auto-transformer for high voltage detection
    • 具有自动变压器的放电灯镇流器用于高电压检测
    • US08207680B2
    • 2012-06-26
    • US12625632
    • 2009-11-25
    • Katsuyoshi NakadaTomoyuki NakanoJunichi HasegawaKoji Watanabe
    • Katsuyoshi NakadaTomoyuki NakanoJunichi HasegawaKoji Watanabe
    • G05F1/00
    • H05B41/2887H05B41/2883H05B41/382Y02B20/204
    • A lamp ballast is provided requiring less size and cost for powering a discharge lamp. An inverter circuit converts a DC voltage from a DC power source into a voltage having a determined frequency, and supplies the converted voltage to the discharge lamp inserted between a pair of output ends of the inverter. A resonant circuit includes an auto-transformer and a resonant capacitor, and supplies an output voltage corresponding to a frequency of the rectangular wave voltage of the power supply circuit to the discharge lamp. A voltage detection circuit detects an output voltage of the resonant circuit based on a potential of the resonant capacitor. A control circuit has a startup control mode to set the frequency of the rectangular wave voltage based on the detected voltage from the voltage detection circuit, wherein the output voltage of the resonant circuit exceeds a starting voltage of the discharge lamp.
    • 提供了一种灯泡镇流器,其需要较小的尺寸和成本来为放电灯供电。 逆变器电路将来自直流电源的直流电压转换成具有确定频率的电压,并且将转换的电压提供给插入在逆变器的一对输出端之间的放电灯。 谐振电路包括自耦变压器和谐振电容器,并且将对应于电源电路的矩形波电压的频率的输出电压提供给放电灯。 电压检测电路根据谐振电容器的电位来检测谐振电路的输出电压。 控制电路具有基于来自电压检测电路的检测电压来设定矩形波电压的频率的启动控制模式,其中谐振电路的输出电压超过放电灯的起始电压。
    • 6. 发明申请
    • HID Lamp Ballast with Controlled DC Step Down Circuit
    • HID灯镇流器与受控直流降压电路
    • US20100102757A1
    • 2010-04-29
    • US12582173
    • 2009-10-20
    • Katsuyoshi NakadaTomoyuki NakanoJunichi HasegawaKoji Watanabe
    • Katsuyoshi NakadaTomoyuki NakanoJunichi HasegawaKoji Watanabe
    • H05B41/36
    • H05B41/2886H05B41/2926
    • An electronic ballast is provided for powering a high intensity discharge lamp. A voltage step-down circuit is arranged to reduce an input DC voltage. An inverter circuit includes at least one high frequency switching element is and arranged to convert the reduced voltage to a high frequency AC voltage. A resonant circuit receives the high frequency voltage and is further coupled to the discharge lamp. A voltage step-down control circuit controls the DC voltage output from the voltage step-down circuit. A driving circuit supplies a driving signal to the switching element of the inverter, and further adjusts a driving frequency of the driving signal, thereby controlling the high-frequency voltage. The high frequency voltage in a first operating mode is controlled to a low level wherein the lamp is prevented from starting. The high frequency voltage in a second operating mode is controlled to a high level wherein the discharge lamp can be started.
    • 提供电子镇流器用于为高强度放电灯供电。 布置降压电路以降低输入直流电压。 逆变器电路包括至少一个高频开关元件,并且被布置为将降低的电压转换为高频AC电压。 谐振电路接收高频电压并且进一步耦合到放电灯。 电压降压控制电路控制从降压电路输出的直流电压。 驱动电路将驱动信号提供给逆变器的开关元件,并进一步调节驱动信号的驱动频率,从而控制高频电压。 在第一操作模式中的高频电压被控制到低电平,其中防止灯起动。 第二工作模式下的高频电压被控制到可以启动放电灯的高电平。
    • 10. 发明授权
    • Transformer
    • 变压器
    • US07167068B2
    • 2007-01-23
    • US10525199
    • 2003-08-13
    • Tomoyuki NakanoKazuhiko KinutaniHiroshi OgasawaraMizuto IdaYoshiharu Nakamura
    • Tomoyuki NakanoKazuhiko KinutaniHiroshi OgasawaraMizuto IdaYoshiharu Nakamura
    • H01F21/06
    • H01F27/327H01F27/255H01F27/2885H01F27/324H01F2017/046
    • A transformer has a bar-shaped ferrite core, an inner winding wound directly around the ferrite core, an outer winding wound over the inner winding, and a dielectric shield surrounding the outer winding. The outer winding has its circumference covered by a dielectric sheath, and has an intermediate winding portion between its winding start end and its winding stop end. The dielectric sheath in the intermediate winding portion is spaced from each other along the axis of the ferrite core to leave thereat a gap which is filled with a molding material. By provision of the gap between the dielectric sheath of the outer winding, the molding material forming the dielectric shield can be easy to flow in between the dielectric sheath of the outer winding and the inner winding, avoiding the void from appearing between the inner and outer windings for attaining stable electrical characteristic.
    • 变压器具有棒状铁氧体磁芯,直接缠绕在铁氧体磁芯周围的内绕组,缠绕在内绕组上的外绕组和围绕外绕组的电介质屏蔽。 外绕组的周缘由绝缘护套覆盖,并且在绕组起始端和绕组终止端之间具有中间绕组部分。 中间绕组部分中的电介质护套沿着铁氧体磁芯的轴线彼此间隔开,留下填充有模制材料的间隙。 通过设置外绕组的电介质护套之间的间隙,形成电介质屏蔽的成型材料可以容易地流入外绕组的介质护套和内绕组之间,从而避免在内外圈之间出现空隙 用于获得稳定的电气特性的绕组。