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公开(公告)号：US08368323B2
公开(公告)日：2013-02-05
申请号：US12557179
申请日：2009-09-10
摘要： In a power supply unit, if a dimmer rate is changed within a range of k1, k2, . . . k7 by a dimmer signal k of a dimmer signal generator, light-emitting diodes are controlled to be lighted by a constant current characteristic in an area where the dimmer rate is small according to a load characteristic corresponding to the dimmer rates k1, k2, . . . k7. As the dimmer rate becomes larger, a tendency of a constant voltage characteristic is gradually strengthened from a constant current characteristic so that the light-emitting diodes are lighted at the larger dimmer rate.
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公开(公告)号：US08513902B2
公开(公告)日：2013-08-20
申请号：US12557179
申请日：2009-09-10
CPC分类号： H05B33/0815 , H05B33/0851
摘要： In a power supply unit, if a dimmer rate is changed within a range of k1, k2, . . . k7 by a dimmer signal k of a dimmer signal generator, light-emitting diodes are controlled to be lighted by a constant current characteristic in an area where the dimmer rate is small according to a load characteristic corresponding to the dimmer rates k1, k2, . . . k7. As the dimmer rate becomes larger, a tendency of a constant voltage characteristic is gradually strengthened from a constant current characteristic so that the light-emitting diodes are lighted at the larger dimmer rate.
摘要翻译： 在电源单元中，如果在k1，k2，...的范围内改变调光器速率。 。 。 k7通过调光信号发生器的调光信号k，根据对应于调光率k1，k2的负载特性，在调光率较小的区域中，通过恒定电流特性来控制发光二极管。 。 。 k7。 随着调光率变大，从恒定电流特性逐渐增强恒定电压特性的趋势，使得发光二极管以较大的调光速率点亮。
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公开(公告)号：US20100060204A1
公开(公告)日：2010-03-11
申请号：US12557179
申请日：2009-09-10
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0851
摘要： In a power supply unit, if a dimmer rate is changed within a range of k1, k2, . . . k7 by a dimmer signal k of a dimmer signal generator, light-emitting diodes are controlled to be lighted by a constant current characteristic in an area where the dimmer rate is small according to a load characteristic corresponding to the dimmer rates k1, k2, . . . k7. As the dimmer rate becomes deeper, a tendency of a constant voltage characteristic is gradually strengthened from a constant current characteristic so that the light-emitting diodes are lighted at the deeper dimmer rate.
摘要翻译： 在电源单元中，如果在k1，k2，...的范围内改变调光器速率。 。 。 k7通过调光信号发生器的调光信号k，根据对应于调光率k1，k2的负载特性，在调光率较小的区域中，通过恒定电流特性来控制发光二极管。 。 。 k7。 随着调光率变得更深，恒定电压特性的趋势从恒定电流特性逐渐增强，使得发光二极管以更深的调光速度点亮。
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公开(公告)号：US6018221A
公开(公告)日：2000-01-25
申请号：US292672
申请日：1999-04-16
申请人： Hirokazu Ohtake
发明人： Hirokazu Ohtake
CPC分类号： H05B41/28 , Y10S315/02
摘要： The present invention provides an improved power factor and lower harmonic distortion in the power supply circuit of a high frequency discharge lamp. An "extra" circuit path is provided so that the driving power to the lamp will "see" a load that significantly reduces the harmonic distortion and tends to cause the power factor to approach "1". In a preferred embodiment of the invention this is accomplished by providing a third capacitor with which the load circuit forms an in-series resonance circuit with the discharge lamp and its associated current-limiting inductance. The new circuit arrangement provides a high frequency current passage not provided in known lighting circuits of this type that raises the power factor and lowers harmonic distortion.
摘要翻译： 本发明提供了高频放电灯的电源电路中的改进的功率因数和较低的谐波失真。 提供“额外的”电路路径，使得到灯的驱动电力将“看到”显着降低谐波失真的负载，并且倾向于使功率因数接近“1”。 在本发明的优选实施例中，这是通过提供第三电容器来实现的，负载电路与放电灯形成串联谐振电路及其相关的限流电感。 新的电路装置提供了在这种类型的已知照明电路中没有提供的高频电流通道，其提高功率因数并降低谐波失真。
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