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    • 6. 发明授权
    • Electric power supply circuit with PAM waveform correction
    • 电源电路采用PAM波形校正
    • US08270187B2
    • 2012-09-18
    • US12593776
    • 2008-03-18
    • Ryou NakamotoMasafumi HashimotoKeisuke ShimataniKeiichi YoshisakaMasakazu Katou
    • Ryou NakamotoMasafumi HashimotoKeisuke ShimataniKeiichi YoshisakaMasakazu Katou
    • H02M1/12H02M1/14H02M3/18H02M7/00
    • H02M7/2176H02M1/12H02M5/44
    • An electric power supply circuit includes a switching element (S) for causing a short-circuit for output power of a diode bridge circuit (12), a zero-cross detector section (5a) for detecting a point at which an input voltage reaches a level equal to or lower than a reference level, a timer section (5d) for starting a count upon the detection by the zero-cross detector section (5a), and a PAM waveform output section (5c) for causing the switching element (S) to perform switching with a predetermined output timing so that a waveform of the input current is caused to approximate to a sine wave. The circuit further includes a correction section (5e) for correcting, when a difference between a detection interval from detection to detection by the zero-cross detector section (5a), and an average value for detection intervals up to current detection occurs, an initial value of the count of the timer section (5d) according to the difference.
    • 电源电路包括用于使二极管电路(12)的输出功率短路的开关元件(S),用于检测输入电压达到的点的零交叉检测器部(5a) 电平等于或低于参考电平;定时器部分(5d),用于在由过零检测器部分(5a)检测到时启动计数;以及PAM波形输出部分(5c),用于使开关元件(S )以预定的输出定时进行切换,使得使输入电流的波形接近正弦波。 电路还包括校正部分(5e),用于当发现从检测到检测到检测部分(5a)的检测间隔与直到电流检测的检测间隔的平均值之间的差异时,校正初始值 定时器部分(5d)的计数值根据差值。
    • 8. 发明申请
    • ELECTRIC POWER SUPPLY CIRCUIT
    • 电源电路
    • US20100061128A1
    • 2010-03-11
    • US12593776
    • 2008-03-18
    • Ryou NakamotoMasafumi HashimotoKeisuke ShimataniKeiichi YoshisakaMasakazu Katou
    • Ryou NakamotoMasafumi HashimotoKeisuke ShimataniKeiichi YoshisakaMasakazu Katou
    • H02M7/06
    • H02M7/2176H02M1/12H02M5/44
    • An electric power supply circuit includes a switching element (S) for causing a short-circuit for output power of a diode bridge circuit (12), a zero-cross detector section (5a) for detecting a point at which an input voltage reaches a level equal to or lower than a reference level, a timer section (5d) for starting a count upon the detection by the zero-cross detector section (5a), and a PAM waveform output section (5c) for causing the switching element (S) to perform switching with a predetermined output timing so that a waveform of the input current is caused to approximate to a sine wave. The circuit further includes a correction section (5e) for correcting, when a difference between a detection interval from detection to detection by the zero-cross detector section (5a), and an average value for detection intervals up to current detection occurs, an initial value of the count of the timer section (5d) according to the difference.
    • 电源电路包括用于使二极管电路(12)的输出功率短路的开关元件(S),用于检测输入电压达到的点的零交叉检测器部(5a) 电平等于或低于参考电平;定时器部分(5d),用于在由过零检测器部分(5a)检测到时启动计数;以及PAM波形输出部分(5c),用于使开关元件(S )以预定的输出定时进行切换,使得使输入电流的波形接近正弦波。 电路还包括校正部分(5e),用于当发现从检测到检测到检测部分(5a)的检测间隔与直到电流检测的检测间隔的平均值之间的差异时,校正初始值 定时器部分(5d)的计数值根据差值。