Dimming apparatus for fluorescent lamps
    1.
    发明授权
    Dimming apparatus for fluorescent lamps 失效
    荧光灯调光装置

    公开(公告)号:US6133697A

    公开(公告)日:2000-10-17

    申请号:US381690

    申请日:1999-09-23

    IPC分类号: H05B41/392 G05F1/00

    摘要: The present invention is to provide a fluorescent lamp dimming apparatus capable of continuously dimming the fluorescent lamp, and capable of eliminating a fluctuation of light outputs, and in particular, capable of turning ON the fluorescent lamp in a low temperature. The fluorescent lamp dimming apparatus is comprised of a lamp voltage detecting circuit for detecting a discharge voltage of the fluorescent lamp, and a control unit intermittently controls the output frequency of a high frequency power supply in such a manner that the output frequency becomes higher than a dimming frequency based on the dimming signal so as to periodically change a current supplied to the fluorescent lamp into a low current; and when the output frequency of the high frequency power supply becomes higher than the dimming frequency, the control unit sets a lower limit dimming set value based upon a detection voltage of the lamp voltage detecting circuit in order that the output frequency of the high frequency power supply is controlled to become lower than, or equal to the upper limit frequency in accordance with the lower limit dimming set value.

    摘要翻译: PCT No.PCT / JP98 / 02073 Sec。 371 1999年9月23日第 102(e)1999年9月23日PCT PCT日期:1998年5月11日PCT公布。 公开号WO99 /​​ 59383 日期:1999年11月18日本发明提供一种荧光灯调光装置,其能够对荧光灯进行连续调光,能够消除光输出的波动,特别是能够在低温下接通荧光灯。 荧光灯调光装置包括用于检测荧光灯的放电电压的灯电压检测电路,并且控制单元以这样的方式间歇地控制高频电源的输出频率,使得输出频率变得高于 基于所述调光信号的调光频率,以便周期性地将提供给所述荧光灯的电流改变为低电流; 并且当高频电源的输出频率变得高于调光频率时,控制单元基于灯电压检测电路的检测电压设定下限调光设定值,以使高频电源的输出频率 电源根据下限调光设定值被控制为低于或等于上限频率。

    Discharge lamp igniting apparatus for performing a feedback control of a
discharge lamp and the like
    2.
    发明授权
    Discharge lamp igniting apparatus for performing a feedback control of a discharge lamp and the like 失效
    用于进行放电灯的反馈控制的放电灯点火装置等

    公开(公告)号:US5910713A

    公开(公告)日:1999-06-08

    申请号:US129848

    申请日:1998-08-06

    摘要: A current flowing through a discharge lamp 4 is detected by a current detecting circuit 5, and the detected current is outputted as a lamp current signal A to a feedback control circuit 7 where a difference between the lamp current signal A and the dimming control signal B is obtained and amplified, and then a amplified signal D is outputted to an adder 12 which adds the amplified signal D to the dimming control signal B to constitute a control signal E. The control signal is fed back to a high frequency power supply 2. When a comparing circuit 15 detects that the light level of the dimming control signal B with respect to the full light becomes higher than or equal to 40% to 60%, the feedback circuit is disconnected by operating a switch 13 provided between an error amplifying circuit 9 and an adder 12 to stop the feedback control. When a light level of a discharge lamp 104 is smaller than or equal to a predetermined value, first and second reference voltage 108a and 108b are switched by a two-stage switching circuit 109. A comparator 107 compares a detection voltage 106 of the discharge lamp 104 with the first reference voltage 108a, or the detection voltage 106 with the second reference voltage 108b. When the voltage of the discharge lamp 104 becomes high, a control circuit 110 supplies to a high frequency power supply 102, a control signal 112 for interrupting, or reducing an output of the high frequency power supply 102.

    摘要翻译: 通过电流检测电路5检测流过放电灯4的电流,将检测电流作为灯电流信号A输出到反馈控制电路7,反馈控制电路7将灯电流信号A与调光控制信号B 然后将放大信号D输出到加法器12,加法器12将放大的信号D与调光控制信号B相加,构成控制信号E.控制信号反馈给高频电源2。 当比较电路15检测到调光控制信号B相对于全光的光电平变得高于或等于40%至60%时,通过操作设置在误差放大电路之间的开关13来断开反馈电路, 9和加法器12,以停止反馈控制。 当放电灯104的亮度小于或等于预定值时,第一和第二参考电压108a和108b由两级切换电路109切换。比较器107比较放电灯104的检测电压106 104具有第一参考电压108a,或具有第二参考电压108b的检测电压106。 当放电灯104的电压变高时,控制电路110向高频电源102提供控制信号112,用于中断或降低高频电源102的输出。

    Discharge lamp igniting apparatus including feedback control
    3.
    发明授权
    Discharge lamp igniting apparatus including feedback control 失效
    放电灯点火装置包括反馈控制

    公开(公告)号:US5952793A

    公开(公告)日:1999-09-14

    申请号:US816051

    申请日:1997-03-11

    摘要: A current flowing through a discharge lamp 4 is detected by a current detecting circuit 5, and the detected current is outputted as a lamp current signal A to a feedback control circuit 7 where a difference between the lamp current signal A and the dimming control signal B is obtained and amplified, and then a simplified signal D is outputted to an adder 12 which adds the amplified signal D to the dimming control signal B to constitute a control signal E. The control signal is fed back to a high frequency power supply 2. When a comparing circuit 15 detects that the light level of the dimming control signal B with respect to the full light becomes higher than or equal to 40% to 60%, the feedback circuit is disconnected by operating a switch 13 provided between an error amplifying circuit 9 and an adder 12 to stop the feedback control.

    摘要翻译: 通过电流检测电路5检测流过放电灯4的电流,将检测电流作为灯电流信号A输出到反馈控制电路7,反馈控制电路7将灯电流信号A与调光控制信号B 并且然后将简化信号D输出到加法器12,加法器12将放大的信号D加到调光控制信号B以构成控制信号E.控制信号反馈给高频电源2。 当比较电路15检测到调光控制信号B相对于全光的光电平变得高于或等于40%至60%时,通过操作设置在误差放大电路之间的开关13来断开反馈电路, 9和加法器12,以停止反馈控制。

    Inverter apparatus
    4.
    发明授权
    Inverter apparatus 失效
    变频器

    公开(公告)号:US5875107A

    公开(公告)日:1999-02-23

    申请号:US925747

    申请日:1997-09-09

    CPC分类号: H05B41/28

    摘要: After a DC voltage outputted from a rectifying circuit 2 is smoothed by a smoothing capacitor 3, transistors 4 and 5 are turned ON/OFF so as to convert the smoothed DC voltage into high frequency power. This high frequency power is supplied via a second resonant circuit 22 to a load circuit 23 and a first resonant circuit 17, and a high frequency voltage is superimposed on the output of the rectifying circuit 2 from the first resonant circuit 17.

    摘要翻译: 在由整流电路2输出的直流电压被平滑电容器3平滑后,晶体管4和5被导通/截止,从而将平滑的直流电压转换为高频功率。 该高频功率通过第二谐振电路22提供给负载电路23和第一谐振电路17,并且从第一谐振电路17将高频电压叠加在整流电路2的输出上。

    INDUCTION HEATING COOKER
    6.
    发明申请
    INDUCTION HEATING COOKER 审中-公开
    感应加热烹饪机

    公开(公告)号:US20150250027A1

    公开(公告)日:2015-09-03

    申请号:US14427336

    申请日:2013-03-13

    IPC分类号: H05B6/06

    摘要: When an inverter circuit is driven with a predetermined driving frequency, an amount of current change of an input current or a coil current in a set period is detected, and high frequency power to be supplied from the inverter circuit to a heating coil is adjusted in accordance with the amount of current change.

    摘要翻译: 当以预定的驱动频率驱动逆变器电路时,检测在设定周期内的输入电流或线圈电流的电流变化量,并且从逆变器电路向加热线圈供给的高频功率被调整 按照当前的变化量。

    Method for chamfering a wafer
    8.
    发明授权
    Method for chamfering a wafer 失效
    倒角晶圆的方法

    公开(公告)号:US06302769B1

    公开(公告)日:2001-10-16

    申请号:US09290176

    申请日:1999-04-13

    IPC分类号: B24B100

    摘要: In the wafer chamfering method, there is used a disk-shaped grindstone 8 which includes: a peripheral edge portion serving as a grinding surface 1; a flat portion formed in the central portion of the grinding surface 1 in the width direction thereof; and, two edge portions 5 respectively formed on the two sides of the flat portion 2 in the width direction thereof and made in the form of the shape of the valley portion of the notch portion 4 of a disk-shaped wafer 3 to be chamfered. In operation, in the wafer chamfering method, while rotating the above grindstone 8, the grindstone 8 is revolved in the thickness direction of the wafer 3 to thereby chamfer the wafer 3. Especially, the present wafer chamfering method comprises two steps: that is, a circumferential portion grinding step in which the grindstone is supported such that it stands upright or at right angles to the circumferential portion 6 of the wafer 3 at their respective mutual contact points and only the flat portion of the grindstone 8 is contacted with the mutual contact points to thereby chamfer the peripheral edge portion of the wafer 3; and, a notch portion grinding step in which the grindstone is supported such that it is inclined with respect to the diameter direction of the notch portion of the wafer 3 by an angle of about 45° in the circumferential direction of the wafer 3 and the edge portions 5 or both of the edge portions 5 and flat portion 2 are used to chamfer the notch portion 4 of the wafer 3.

    摘要翻译: 在晶片倒角方法中,使用盘状磨石8,其包括:作为研磨面1的周缘部; 在研磨面1的宽度方向的中央部形成的平坦部, 以及分别形成在平坦部2的宽度方向的两侧的两个边缘部5,并且形成为要倒角的圆盘状晶片3的切口部4的谷部的形状。 在操作中,在晶片倒角方法中,在旋转上述磨石8时,磨石8沿晶片3的厚度方向旋转,从而使晶片3倒角。特别地,本晶片倒角法包括两个步骤: 圆周部分磨削步骤,其中所述磨石被支撑成使得其在它们各自的相互接触点处直立或与所述晶片3的周向部分6成直角,并且所述磨石8的平坦部分仅与所述相互接触 从而使晶片3的周边部分倒角; 以及切屑部研磨工序,其中所述磨石被支撑成使得其相对于所述晶片3的所述切口部分的直径方向在所述晶片3的圆周方向上以约45°的角度倾斜,并且所述边缘 边缘部分5和平坦部分2的部分5或两者用于倒角晶片3的切口部分4。

    Feeding a grinding wheel in grinding method
    9.
    发明授权
    Feeding a grinding wheel in grinding method 有权
    在研磨方法中加入砂轮

    公开(公告)号:US06220931B1

    公开(公告)日:2001-04-24

    申请号:US09299151

    申请日:1999-04-26

    IPC分类号: B24B100

    CPC分类号: B24B7/228 B24B41/04 B24B49/16

    摘要: A spindle 23 of a grinding wheel 28 is rotatively borne by a bench 22 for the grinding wheel through hydrostatic thrust bearings 26 and 27. A pressure regulator 38 for regulating the pressure which must be supplied to at least either of supply ports 26a and 27a opposite to each other in the direction of the axial line of the spindle 23 in the hydrostatic thrust bearings 26 and 27 is provided. The pressure regulator 38 has a changing member for changing a passage for choking the fluid and the length of the choking passage.

    摘要翻译: 砂轮28的主轴23通过静压推力轴承26和27由用于砂轮的台架22旋转地承受。压力调节器38,其用于调节必须供给至相对的供给口26a和27a中的至少一个的压力 在静压推力轴承26,27中,在主轴23的轴线方向上相互配置。 压力调节器38具有用于改变用于阻塞流体的通道和阻塞通道的长度的改变构件。

    Grinder and grinding method
    10.
    发明授权
    Grinder and grinding method 失效
    研磨机和研磨方法

    公开(公告)号:US6036585A

    公开(公告)日:2000-03-14

    申请号:US48273

    申请日:1998-03-26

    CPC分类号: B24B7/228 B24B41/04 B24B49/16

    摘要: A spindle 23 of a grinding wheel 28 is rotatively borne by a bench 22 for the grinding wheel through hydrostatic thrust bearings 26 and 27. A pressure regulator 38 for regulating the pressure which must be supplied to at least either of supply ports 26a and 27a opposite to each other in the direction of the axial line of the spindle 23 in the hydrostatic thrust bearings 26 and 27 is provided. The pressure regulator 38 has a changing member for changing a passage for choking the fluid and the length of the choking passage.

    摘要翻译: 砂轮28的主轴23通过静压推力轴承26和27由用于砂轮的台架22旋转地承受。压力调节器38,其用于调节必须供给至相对的供给口26a和27a中的至少一个的压力 在静压推力轴承26,27中,在主轴23的轴线方向上相互配置。 压力调节器38具有用于改变用于阻塞流体的通道和阻塞通道的长度的改变构件。