专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5914566A Lighting circuit for applying a negative AC voltage to a discharge lamp 失效
标题翻译：用于向放电灯施加负交流电压的照明电路
公开(公告)号：US5914566A
公开(公告)日：1999-06-22
申请号：US778749
申请日：1997-01-06
申请人： Akihiro Matsumoto , Masayasu Yamashita , Jun Yabuzaki
发明人： Akihiro Matsumoto , Masayasu Yamashita , Jun Yabuzaki
IPC分类号： H05B41/282 , H02M3/335 , H05B41/292 , H05B37/02
CPC分类号： H02M3/33507 , H05B41/2925 , H05B41/2928 , Y02B20/208
摘要： A lighting circuit for a discharge lamp has input terminals to which a DC power supply is to be connected, a DC power supply circuit for converting a DC input voltage to a predetermined voltage, and a DC-AC converter for converting the output voltage of the DC power supply circuit to an AC voltage and then supplying the AC voltage to the discharge lamp. A transformer is incorporated in the DC power supply circuit as insulator means for insulating the circuit portion at its input stage from the circuit portion at its output stage. The transformer has its high-voltage output terminal connected to a ground-side one of the input terminals to supply a negative rectangular-wave voltage to the discharge lamp.
摘要翻译：用于放电灯的点亮电路具有要连接直流电源的输入端子，将直流输入电压转换为预定电压的直流电源电路和用于将直流电源转换器的输出电压 DC电源电路连接到交流电压，然后将AC电压提供给放电灯。变压器被并入直流电源电路中作为绝缘体装置，用于在其输出级将电路部分在其输入级与电路部分绝缘。变压器的高电压输出端子连接到接地侧的输入端子之间，以向放电灯提供负矩形波电压。

2. 发明授权

US06340870B1 Lighting circuit for discharge lamp 失效
标题翻译：放电灯照明电路
公开(公告)号：US06340870B1
公开(公告)日：2002-01-22
申请号：US09526884
申请日：2000-03-16
申请人： Masayasu Yamashita , Jun Yabuzaki
发明人： Masayasu Yamashita , Jun Yabuzaki
IPC分类号： H05B3702
CPC分类号： H05B41/2926 , H02M2001/0009 , H05B41/2923
摘要： A lighting circuit for a discharge lamp incorporates a DC-DC converter for converting DC voltage and a control circuit for controlling the output voltage from the converter by controlling the ON/OFF operation of an FET which is configured as the converter. The electric current which flows in the FET is monitored by detecting the voltage between the drain and the source to turn the field effect transistor off when the voltage level is at the reference value or higher. Thus, a pulse-by-pulse current limitation is performed. Limitation of an electric current in a switching device in a DC-DC converter of a lighting circuit for a discharge lamp is achieved while reducing the size and cost of the circuit apparatus.
摘要翻译：用于放电灯的点亮电路包括用于转换DC电压的DC-DC转换器和用于通过控制被配置为转换器的FET的ON / OFF操作来控制来自转换器的输出电压的控制电路。通过检测漏极和源极之间的电压来监测在FET中流动的电流，以在电压电平处于基准值或更高时将场效应晶体管截止。因此，执行逐脉冲电流限制。在减小电路装置的尺寸和成本的同时，实现了用于放电灯的照明电路的DC-DC转换器中的开关装置中的电流的限制。

3. 发明授权

US5973457A Lighting circuit for discharge lamp 失效
标题翻译：放电灯照明电路
公开(公告)号：US5973457A
公开(公告)日：1999-10-26
申请号：US78812
申请日：1998-05-14
申请人： Masayasu Yamashita , Atsushi Toda , Jun Yabuzaki
发明人： Masayasu Yamashita , Atsushi Toda , Jun Yabuzaki
IPC分类号： H05B41/282 , H05B37/03 , H05B41/16 , H05B41/18 , H05B41/292 , H05B37/00
CPC分类号： H05B37/03 , H05B41/2925 , Y02B20/208
摘要： A lighting circuit for a discharge lamp is designed in such a way that a detection time for the flicker state of a discharge lamp is not affected by the light-OFF time at the time the discharge lamp flickers without causing a significant increase in cost. This lighting circuit 1 for a discharge lamp comprises detection means 5 for detecting a flicker state of a discharge lamp 3; and abnormality determining means 6 for determining an abnormality in the discharge lamp 3 in accordance with a detection signal from the detection means 5 and implementing display to that effect, or stopping power supply to the discharge lamp 3, whereby when the detection signal from the detection means 5 indicates repetition of a state where a light-OFF time of the discharge lamp 3 is equal to or greater than a first set time and a light-ON time of the discharge lamp 3 is equal to or less than a second set time is repeated a predetermined period or longer, or a predetermined number of times or more, the abnormality determining means 6 determines the state as abnormal lighting of the discharge lamp 3.
摘要翻译：用于放电灯的点亮电路被设计成使得放电灯的闪烁状态的检测时间不受放电灯闪烁时的熄灭时间的影响而不会导致成本的显着增加。用于放电灯的该照明电路1包括用于检测放电灯3的闪烁状态的检测装置5; 以及异常确定装置6，用于根据来自检测装置5的检测信号确定放电灯3的异常并实现显示，或停止对放电灯3的供电，由此当检测到检测信号时装置5表示放电灯3的熄灭时间等于或大于第一设定时间并且放电灯3的点亮时间等于或小于第二设定时间的状态的重复重复预定时间段或更长时间或预定次数或更多次，异常确定装置6将该状态确定为放电灯3的异常点亮。

4. 发明授权

US6087776A Discharge lamp lighting circuit with protection circuit 失效
标题翻译：放电灯点亮电路带保护电路
公开(公告)号：US6087776A
公开(公告)日：2000-07-11
申请号：US6883
申请日：1998-01-14
申请人： Masayasu Yamashita , Atsushi Toda , Jun Yabuzaki
发明人： Masayasu Yamashita , Atsushi Toda , Jun Yabuzaki
IPC分类号： H05B41/16 , H05B41/24 , H05B41/292 , B60Q1/02
CPC分类号： H05B41/2923 , H05B41/2925 , Y02B20/208 , Y10S315/07
摘要： A discharge lamp lighting circuit which, in turning on a discharge lamp, when an abnormal condition occurs in a discharge lamp or in the present discharge lamp lighting circuit due to a transient cause, can resume the power supply to the discharge lamp at the time when the present transient abnormal condition cause disappears. The discharge lamp lighting circuit includes lighting control for controlling the lighting of a discharge lamp, an abnormal condition detector for detecting an abnormal condition occurring in the discharge lamp or in the discharge lamp lighting circuit, and a protection circuit which receives a signal from the abnormal condition detector to thereby stop the power supply to the discharge lamp. The protection circuit is composed of first protection unit and second protection unit. When a permanent abnormal condition is detected in the discharge lamp or in the discharge lamp lighting circuit, the power supply to the discharge lamp is cut off by the first protection unit and such cutoff condition of the power supply is also held. Also, when a transient abnormal condition is detected in the discharge lamp or in the discharge lamp lighting circuit, the power supply to the discharge lamp is cut off by the second protection unit and, after then, when the present abnormal condition is no longer detected, the power supply cutoff condition is removed to thereby resume the power supply to the discharge lamp. Further, while the power supply to the discharge lamp is being cut off by the second protection unit, the operation of the first protection unit is prevented from cutting off the power supply to the discharge lamp and holding such power supply cutoff condition.
摘要翻译：一种放电灯点亮电路，其在接通放电灯时，由于暂时原因导致放电灯或本放电灯点亮电路发生异常状态时，可以恢复对放电灯的电源，目前暂时的异常情况导致消失。放电灯点亮电路包括用于控制放电灯的点亮的照明控制，用于检测在放电灯或放电灯点亮电路中发生的异常状况的异常状态检测器，以及接收来自异常的信号的保护电路从而停止对放电灯的电源。保护电路由第一保护单元和第二保护单元组成。当在放电灯或放电灯点亮电路中检测到永久性异常情况时，通过第一保护单元切断放电灯的电源，并且还保持电源的切断状态。此外，当在放电灯或放电灯点亮电路中检测到瞬态异常状态时，通过第二保护单元切断对放电灯的电源，然后，当不再检测到当前的异常状况时，去除电源切断条件，从而恢复对放电灯的供电。此外，当通过第二保护单元切断放电灯的电源时，防止第一保护单元的操作切断对放电灯的电源并保持该电源切断状态。

5. 发明授权

US6002215A Lighting circuit for discharge lamp 失效
标题翻译：放电灯照明电路
公开(公告)号：US6002215A
公开(公告)日：1999-12-14
申请号：US79194
申请日：1998-05-15
申请人： Masayasu Yamashita , Atsushi Toda , Jun Yabuzaki
发明人： Masayasu Yamashita , Atsushi Toda , Jun Yabuzaki
IPC分类号： H05B41/282 , H05B41/16 , H05B41/18 , H05B41/285 , H05B41/292 , G05F1/00
CPC分类号： H05B41/2921 , H05B41/2851 , Y10S315/07
摘要： A lighting circuit for a discharge lamp which reliably detects short-circuiting of, or current leakage from, a discharge. A lighting circuit 1 has DC-AC conversion means 3 for converting a DC voltage from the DC power supply 2 to an AC voltage and supplying the AC voltage to the discharge lamp 9. The lighting circuit further comprises sampling means 4 for sampling a lamp voltage or a lamp current of the discharge lamp 9 in synchronism with a drive signal Sp sent to the DC-AC conversion means 3 to generate an AC wave, and abnormality determining means 5 for determining short-circuiting of, or current leakage from, the discharge lamp 9 based on a detection signal from the sampling means 4. When an abnormality is detected, power supply to the discharge lamp 9 is stopped.
摘要翻译：一种用于放电灯的照明电路，其可靠地检测放电的短路或电流泄漏。照明电路1具有用于将来自直流电源2的直流电压转换为交流电压的DC-AC转换装置3，并将AC电压提供给放电灯9.点亮电路还包括采样装置4，用于对灯电压进行采样或放电灯9的灯电流与发送到DC-AC转换装置3的驱动信号Sp同步以产生AC波，以及异常确定装置5，用于确定放电的短路或电流泄漏基于来自采样装置4的检测信号的灯9.当检测到异常时，停止向放电灯9供电。

6. 发明申请

US20080067988A1 Switching regulator 有权
标题翻译：开关稳压器
公开(公告)号：US20080067988A1
公开(公告)日：2008-03-20
申请号：US11898044
申请日：2007-09-07
申请人： Jun Yabuzaki
发明人： Jun Yabuzaki
IPC分类号： G05F1/00
CPC分类号： H02M3/158 , H02M2001/0025 , H02M2001/0048 , H02M2003/1566 , Y02B70/1491
摘要： In a switching regulator, an inductor L1 (in FIG. 1) and an output capacitor C1 are connected on the output side of a series circuit consisting of a switching element (MOS transistor P1) and a synchronous rectification element (MOS transistor N1), and an N-channel MOS transistor Q1 is connected between an intermediate point of the inductor L1 and one terminal thereof. In addition, the frequency of oscillator 2 and the turning ON/OFF of MOS transistor Q1 are controlled by control unit 1. When output voltage Vout is to be altered, the switching frequency of MOS transistors P1 and N1 is increased, and the inductance of inductor L1 is reduced, whereby a fast output change is permitted. On the other hand, during ordinary constant output voltage operation, the switching frequency is reduced, and the inductance value is increased, whereby high efficiency is attained.
摘要翻译：在开关调节器中，在由开关元件（MOS晶体管P 1）和同步整流元件（MOS晶体管）构成的串联电路的输出侧连接有电感器L 1（图1）和输出电容器C 1 N 1），并且N沟道MOS晶体管Q 1连接在电感器L 1的中间点和其一个端子之间。此外，由控制单元1控制振荡器2的频率和MOS晶体管Q1的接通/断开。当要改变输出电压Vout时，MOS晶体管P 1和N 1的开关频率增加，电感L 1的电感减小，允许快速输出变化。另一方面，在通常的恒定输出电压运行中，开关频率降低，电感值增加，从而达到高效率。

7. 发明授权

US08716988B2 Power factor correction type switching power supply unit 有权
标题翻译：功率因数校正型开关电源单元
公开(公告)号：US08716988B2
公开(公告)日：2014-05-06
申请号：US12942192
申请日：2010-11-09
申请人： Jun Yabuzaki , Jian Chen
发明人： Jun Yabuzaki , Jian Chen
IPC分类号： G05F1/00
CPC分类号： G05F1/70
摘要： A multiplier multiplies a current signal of an Iy generator and a voltage signal from a Vx generator corresponding to a divided voltage value of an output voltage of a full-wave rectifier. The result of the multiplication is output as a current reference signal to the non-inversion input terminal of a current error amplifier. A current peak waveform generator circuit generates an envelope waveform of peak values of an inductor current. An Iz generator, when the envelope waveform exceeds a first threshold value smaller than a third threshold value set in an overcurrent protection circuit, curbs the inductor current by adjusting the size of a current signal output to the multiplier, and reducing the current reference signal.
摘要翻译：乘法器将Iy发生器的电流信号和来自Vx发生器的电压信号与全波整流器的输出电压的分压值相乘。乘法的结果作为电流参考信号输出到电流误差放大器的非反相输入端。电流峰值波形发生器电路产生电感电流峰值的包络波形。当发生包络波形超过设置在过电流保护电路中的第三阈值的第一阈值时，Iz发生器通过调节输出到乘法器的电流信号的大小并减小电流参考信号来抑制电感器电流。

8. 发明授权

US08310795B2 Power factor correction type switching power supply unit 有权
标题翻译：功率因数校正型开关电源单元
公开(公告)号：US08310795B2
公开(公告)日：2012-11-13
申请号：US12943420
申请日：2010-11-10
申请人： Jun Yabuzaki , Jian Chen
发明人： Jun Yabuzaki , Jian Chen
IPC分类号： H02H9/02
CPC分类号： H02M1/4225 , Y02B70/126
摘要： A power factor correction type switching power supply unit can change reference values of an overcurrent limit at an optimum timing at a time of an overcurrent protection of a step-up type converter, so that no sudden change occurs in an inductor current. A detection level selection circuit selects one of first and second threshold values with a selection signal, and outputs it as an overcurrent detection level to an overcurrent detection circuit. An input voltage monitoring circuit determines the selection signal in such a way that the larger of two threshold values is selected when an alternating current input voltage exceeds a first reference voltage, and the smaller threshold value is selected when the alternating current input voltage does not exceed a second reference voltage, and outputs the selection signal to the detection level selection circuit at a timing at which the alternating current input voltage approaches a zero.
摘要翻译：功率因数校正型开关电源单元可以在升压型转换器的过电流保护时的最佳定时改变过电流限制的参考值，使得在电感器电流中不会发生突然的变化。检测电平选择电路用选择信号选择第一和第二阈值之一，并将其作为过电流检测电平输出到过电流检测电路。输入电压监视电路以这样的方式确定选择信号，使得当交流电输入电压超过第一参考电压时选择两个阈值中较大的一个，并且当交流输入电压不超过时选择较小的阈值第二参考电压，并且在交流输入电压接近零的定时将选择信号输出到检测电平选择电路。

9. 发明申请

US20110122664A1 POWER FACTOR CORRECTION TYPE SWITCHING POWER SUPPLY UNIT 有权
标题翻译：功率因数校正型开关电源单元
公开(公告)号：US20110122664A1
公开(公告)日：2011-05-26
申请号：US12951746
申请日：2010-11-22
申请人： Jun Yabuzaki , Jian Chen
发明人： Jun Yabuzaki , Jian Chen
IPC分类号： H02M7/155
CPC分类号： H02M1/4225 , H02M1/32 , Y02B70/126 , Y02P80/112
摘要： A soft-stop overvoltage protection circuit, into which a soft-stop overvoltage detection voltage proportional to a direct current output voltage is input, reduces the output of a multiplier in accordance with the soft-stop overvoltage detection voltage when the soft-stop overvoltage detection voltage exceeds a first threshold value. An overvoltage protection circuit, a second threshold value higher than the first threshold value being set, compulsorily turns off a switching element by outputting an overvoltage detection signal when the soft-stop overvoltage detection voltage exceeds the second threshold value. The soft-stop overvoltage protection circuit compulsorily increases the output of a voltage error amplifier circuit on the output voltage decreasing. When the output of the voltage error amplifier circuit increases suddenly, and the output voltage rises excessively, the soft-stop overvoltage protection circuit decreases the output of the multiplier, thus curbing the rise of the output voltage.
摘要翻译：软停止过电压保护电路输入与直流输出电压成比例的软停过电压检测电压，在软停过电压检测时，根据软停过电压检测电压减小乘法器的输出电压超过第一阈值。当软停止过电压检测电压超过第二阈值时，过电压检测信号通过输出过电压检测信号而强制地切断开关元件。软停止过压保护电路强制增加电压误差放大器电路的输出电压降低的输出。当电压误差放大电路的输出突然增加，输出电压过大时，软停止过压保护电路会降低乘法器的输出，从而抑制输出电压的上升。

10. 发明授权

US08379419B2 Soft-stop overvoltage protection circuit for power factor correction type switching power supply unit 有权
标题翻译：用于功率因数校正型开关电源单元的软停过电压保护电路
公开(公告)号：US08379419B2
公开(公告)日：2013-02-19
申请号：US12951746
申请日：2010-11-22
申请人： Jun Yabuzaki , Jian Chen
发明人： Jun Yabuzaki , Jian Chen
IPC分类号： H02H7/10 , H02H7/122 , H02H7/00 , H02H3/20
CPC分类号： H02M1/4225 , H02M1/32 , Y02B70/126 , Y02P80/112
摘要： A soft-stop overvoltage protection circuit, into which a soft-stop overvoltage detection voltage proportional to a direct current output voltage is input, reduces the output of a multiplier in accordance with the soft-stop overvoltage detection voltage when the soft-stop overvoltage detection voltage exceeds a first threshold value. An overvoltage protection circuit, a second threshold value higher than the first threshold value being set, compulsorily turns off a switching element by outputting an overvoltage detection signal when the soft-stop overvoltage detection voltage exceeds the second threshold value. The soft-stop overvoltage protection circuit compulsorily increases the output of a voltage error amplifier circuit on the output voltage decreasing. When the output of the voltage error amplifier circuit increases suddenly, and the output voltage rises excessively, the soft-stop overvoltage protection circuit decreases the output of the multiplier, thus curbing the rise of the output voltage.
摘要翻译：软停止过电压保护电路输入与直流输出电压成比例的软停过电压检测电压，在软停过电压检测时，根据软停过电压检测电压减小乘法器的输出电压超过第一阈值。当软停止过电压检测电压超过第二阈值时，过电压检测信号通过输出过电压检测信号而强制地切断开关元件。软停止过压保护电路强制增加电压误差放大器电路的输出电压降低的输出。当电压误差放大电路的输出突然增加，输出电压过大时，软停止过压保护电路会降低乘法器的输出，从而抑制输出电压的上升。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式