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公开(公告)号：US20120038615A1
公开(公告)日：2012-02-16
申请号：US13035556
申请日：2011-02-25
申请人： Wa-Hing LEUNG , Johnny SIU
发明人： Wa-Hing LEUNG , Johnny SIU
CPC分类号： H05B33/083 , H05B33/0824 , H05B33/0845
摘要： An LED array switching apparatus, comprises: a plurality of LED arrays arranged in a serial path; a voltage supply coupled to the plurality of LED arrays; a plurality of current sources selectively coupled to the LED arrays, each of the current sources being switchable between a current regulating state and an open state; and a controller that outputs at least one control signal. The controller, the at least one switch and current sources cooperate together such that: when the voltage of the voltage source is below the at least one reference voltage, and/or when a predetermined level of current passes through the one or more current sources, at least one switch is closed and one or more associated current sources are controlled so as to break the serial path into one or more parallel paths each including less than all of the LED arrays.
摘要翻译： 一种LED阵列切换装置，包括：以串行路径排列的多个LED阵列; 耦合到所述多个LED阵列的电压源; 选择性地耦合到LED阵列的多个电流源，每个电流源可在电流调节状态和打开状态之间切换; 以及输出至少一个控制信号的控制器。 所述控制器，所述至少一个开关和电流源协同工作，使得：当所述电压源的电压低于所述至少一个参考电压时，和/或当预定电流通过所述一个或多个电流源时， 关闭至少一个开关并且控制一个或多个相关联的电流源，以便将串行路径分解成一个或多个并行路径，每个并行路径包括少于所有LED阵列。
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公开(公告)号：US08947014B2
公开(公告)日：2015-02-03
申请号：US13035556
申请日：2011-02-25
申请人： Wa-Hing Leung , Johnny Siu
发明人： Wa-Hing Leung , Johnny Siu
CPC分类号： H05B33/083 , H05B33/0824 , H05B33/0845
摘要： An LED array switching apparatus, comprises: a plurality of LED arrays arranged in a serial path; a voltage supply coupled to the plurality of LED arrays; a plurality of current sources selectively coupled to the LED arrays, each of the current sources being switchable between a current regulating state and an open state; and a controller that outputs at least one control signal. The controller, the at least one switch and current sources cooperate together such that: when the voltage of the voltage source is below the at least one reference voltage, and/or when a predetermined level of current passes through the one or more current sources, at least one switch is closed and one or more associated current sources are controlled so as to break the serial path into one or more parallel paths each including less than all of the LED arrays.
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公开(公告)号：US20120038285A1
公开(公告)日：2012-02-16
申请号：US12955030
申请日：2010-11-29
申请人： Wa Hing Leung , Johnny Siu
发明人： Wa Hing Leung , Johnny Siu
IPC分类号： H05B37/02
CPC分类号： H05B33/0809 , H05B33/083
摘要： An LED array switching apparatus, comprises: a plurality of LED segments D1 to Dn connected in series, each LED segment having a forward voltage; a voltage supply coupled to the plurality of LED segments; and a plurality of constant current sources G1 to Gn, coupled to outputs of LED segments D1 to Dn, respectively. Each of the constant current sources is switchable between a current regulating state and an open state such that as the voltage of the voltage supply increases, LED segments are switched on and lit to form a higher forward voltage LED string, and as the voltage of the voltage supply decreases, segments are switched off and removed from the LED string starting with the most recently lit segment.
摘要翻译： 一种LED阵列开关装置，包括：串联连接的多个LED段D1至Dn，每个LED段具有正向电压; 耦合到所述多个LED段的电压源; 以及分别耦合到LED段D1至Dn的输出的多个恒流源G1至Gn。 每个恒流源可以在电流调节状态和断开状态之间切换，使得当电压源的电压增加时，LED段被接通并点亮以形成更高的正向电压LED串，并且作为 电压降低，从最近点亮的段开始，将LED段切断并从LED串上拆下。
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公开(公告)号：US08508140B2
公开(公告)日：2013-08-13
申请号：US12955030
申请日：2010-11-29
申请人： Wa-Hing Leung , Johnny Siu
发明人： Wa-Hing Leung , Johnny Siu
CPC分类号： H05B33/0809 , H05B33/083
摘要： An LED array switching apparatus, comprises: a plurality of LED segments D1 to Dn connected in series, each LED segment having a forward voltage; a voltage supply coupled to the plurality of LED segments; and a plurality of constant current sources G1 to Gn, coupled to outputs of LED segments D1 to Dn, respectively. Each of the constant current sources is switchable between a current regulating state and an open state such that as the voltage of the voltage supply increases, LED segments are switched on and lit to form a higher forward voltage LED string, and as the voltage of the voltage supply decreases, segments are switched off and removed from the LED string starting with the most recently lit segment.
摘要翻译： 一种LED阵列开关装置，包括：串联连接的多个LED段D1至Dn，每个LED段具有正向电压; 耦合到所述多个LED段的电压源; 以及分别耦合到LED段D1至Dn的输出的多个恒流源G1至Gn。 每个恒流源可以在电流调节状态和断开状态之间切换，使得当电压源的电压增加时，LED段被接通并点亮以形成更高的正向电压LED串，并且作为 电压降低，从最近点亮的段开始，将LED段切断并从LED串上拆下。
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公开(公告)号：US20120056608A1
公开(公告)日：2012-03-08
申请号：US12959178
申请日：2010-12-02
申请人： Johnny SIU , Wa-Hing Leung
发明人： Johnny SIU , Wa-Hing Leung
IPC分类号： G05F3/08
CPC分类号： H05B33/0815
摘要： A stabilization circuit is provided at an output of an electronic transformer driving circuit having a rectifier fed into a feedback-controlled oscillator circuit that drives an isolation transformer at an output of the electronic transformer driving circuit. The stabilization circuit includes: a current limiting portion that limits an amount of current delivered by the electronic transformer driving circuit.
摘要翻译： 在电子变压器驱动电路的输出端设有稳压电路，该电子变压器驱动电路具有馈送到电子变压器驱动电路的输出端的驱动隔离变压器的反馈控制振荡电路的整流器。 稳定电路包括：限制由电子变压器驱动电路传送的电流量的限流部分。
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