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公开(公告)号：US20210144826A1
公开(公告)日：2021-05-13
申请号：US17059245
申请日：2019-05-22
申请人： King Kuen Hau
发明人： King Kuen Hau
IPC分类号： H05B45/315 , H05B39/08 , H05B39/04
摘要： Disclosed is a phase-cut dimmer, comprising an AC switch coupled in series between an AC supply and a load; a DC power supply powered from a voltage across the switch; a zero-crossing detector of a phase-cut AC voltage across the switch; a timer generating a timing signal of a duty-cycle proportional to a variable fraction of a peak voltage of a sawtooth signal, wherein the sawtooth signal is synchronized to the zero-crossing detector; a blanking signal generator triggered by a duty-cycle detector to reduce the duty-cycle when the duty-cycle of the timing signal exceeds a predetermined maximum limit; and an operation mode selector activated by an output of an inductive load detector.
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公开(公告)号：US11444603B2
公开(公告)日：2022-09-13
申请号：US16888853
申请日：2020-06-01
申请人： King Kuen Hau
发明人： King Kuen Hau
IPC分类号： H03L5/00 , H03K3/012 , H02M1/08 , H02M3/06 , H03K5/00 , H03K19/0175 , H03H5/12 , G06G7/163 , H02M7/06 , H02M1/00 , H02M1/34
摘要： A power control circuit comprising a power supply and a load, the load being synthesized from an impedance synthesizer comprising two-terminal impedance elements connected in series and grouped in impedance modules. The impedance elements in each impedance module are of equal value, while those between the modules bear ratios uniquely defined according to the numbers of impedance elements in the impedance modules. A number of switches associated with said impedance elements short out a selected number of the impedance elements under the control of a first analog signal which may be preprocessed by an analytic function. The analog signal is converted to digital signals by an analog-to-digital converter, then level shifted to control the switches associated with the impedance elements, whereby the amount of power delivered to the load is controllable by the first analog signal. Pulse-width-modulation is deployed to further control the power by a second analog signal, with additional benefit of overload protection.
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公开(公告)号：US11095230B2
公开(公告)日：2021-08-17
申请号：US16620501
申请日：2018-06-04
申请人： King Kuen Hau
发明人： King Kuen Hau
摘要： A method of AC-to-DC conversion is disclosed, comprising steps of: rectifying an AC voltage to a pulsating DC voltage; coupling the pulsating DC voltage to a capacitor via a switch; coupling an output voltage of the capacitor to a load; monitoring a signal of the load; determining a voltage deviation of the signal of the load from a predetermined reference; in synchronization and in every cycle of the pulsating DC voltage, turning on the switch at a first time instant when the switch is not forward biased and turning off the switch in response to the voltage deviation at a second time instant; whereby the signal of the load is controlled.
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公开(公告)号：US20170208659A1
公开(公告)日：2017-07-20
申请号：US15324714
申请日：2015-07-28
申请人： King Kuen HAU
发明人： King Kuen HAU
CPC分类号： H05B33/0845 , H05B33/0815 , H05B33/089 , H05B37/0281 , H05B39/048 , Y02B20/148
摘要： A phase cut dimmer, coupled between an AC power source and a load, to control the amount of power delivered from the power source to the load, comprising: a dimmer switch to turn on and off the current from the power source to the load; the dimmer switch being an AC switch formed of a first MOSFET and a second MOSFET connected in anti-series; the two source electrodes of the MOSFETs being connected together to form a common source terminal and the two gate electrodes of the MOSFETs being connected together to form a switch control terminal; a line filter bypassing very low current at the line frequency; a rectifier to convert the AC voltage from the power source to pulsating DC voltage which is coupled to the dimmer switch; a very low power unipolar zero detector extracting a zero marker signal from the pulsating DC voltage; the unipolar zero detector comprising a voltage-controlled bleeder impedance, a comparator, a pulse generator, wherein the voltage-controlled bleeder impedance is coupled to the pulsating DC voltage whereby the bleeder impedance is controlled proportional to the instantaneous value of the voltage; the pulsating DC voltage is compared to a reference close to zero level by the comparator, triggering the pulse generator to generate the zero marker signal when the voltage is lower than the reference; a very low power adjustable timer to control the dimmer switch in synchronization with the zero marker signal.
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公开(公告)号：US10257894B2
公开(公告)日：2019-04-09
申请号：US15324714
申请日：2015-07-28
申请人： King Kuen Hau
发明人： King Kuen Hau
摘要： A phase cut dimmer, coupled between an AC power source and a load, to control the amount of power delivered from the power source to the load, comprising: a dimmer switch to turn on and off the current from the power source to the load; the dimmer switch being an AC switch formed of a first MOSFET and a second MOSFET connected in anti-series; the two source electrodes of the MOSFETs being connected together to form a common source terminal and the two gate electrodes of the MOSFETs being connected together to form a switch control terminal; a line filter bypassing very low current at the line frequency; a rectifier to convert the AC voltage from the power source to pulsating DC voltage which is coupled to the dimmer switch; a very low power unipolar zero detector extracting a zero marker signal from the pulsating DC voltage; the unipolar zero detector comprising a voltage-controlled bleeder impedance, a comparator, a pulse generator, wherein the voltage-controlled bleeder impedance is coupled to the pulsating DC voltage whereby the bleeder impedance is controlled proportional to the instantaneous value of the voltage; the pulsating DC voltage is compared to a reference close to zero level by the comparator, triggering the pulse generator to generate the zero marker signal when the voltage is lower than the reference; a very low power adjustable timer to control the dimmer switch in synchronization with the zero marker signal.
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公开(公告)号：US09791878B2
公开(公告)日：2017-10-17
申请号：US14418953
申请日：2013-08-02
申请人： King Kuen Hau
发明人： King Kuen Hau
CPC分类号： G05F3/08 , G05F1/14 , G05F3/04 , H02J1/00 , Y10T307/685
摘要： A high-efficiency digital voltage controller capable of providing monotonically-varying stepwise voltage, said controller comprises of a plurality of two-terminal voltage modules connected in series; within each module one or more two-terminal voltage cells of identical voltage each and connected in series; within each module a plurality of switches controllable to connect any number of the voltage cells in series to the output terminals of the voltage module; the ratios of the magnitudes of voltage of any one voltage cell between the voltage modules being substantially equal to integer values uniquely defined by present invention, according to the numbers of voltage cells in each of the voltage modules; said plurality of switches being controlled by a control module implemented in any suitable logic.
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公开(公告)号：US20150241900A1
公开(公告)日：2015-08-27
申请号：US14418953
申请日：2013-08-02
申请人： King Kuen HAU
发明人： King Kuen Hau
CPC分类号： G05F3/08 , G05F1/14 , G05F3/04 , H02J1/00 , Y10T307/685
摘要： A high-efficiency digital voltage controller capable of providing monotonically-varying stepwise voltage, said controller comprises of a plurality of two-terminal voltage modules connected in series; within each module one or more two-terminal voltage cells of identical voltage each and connected in series; within each module a plurality of switches controllable to connect any number of the voltage cells in series to the output terminals of the voltage module; the ratios of the magnitudes of voltage of any one voltage cell between the voltage modules being substantially equal to integer values uniquely defined by present invention, according to the numbers of voltage cells in each of the voltage modules; said plurality of switches being controlled by a control module implemented in any suitable logic.
摘要翻译： 一种能够提供单调变化阶跃电压的高效数字电压控制器，所述控制器包括串联连接的多个两端电压模块; 在每个模块内，一个或多个具有相同电压的两端电压单元串联连接; 在每个模块内，多个开关可控制以将任意数量的电压单元串联连接到电压模块的输出端; 电压模块之间的任何一个电压单元的电压的大小的比值基本上等于根据本发明唯一定义的整数值，根据每个电压模块中的电压单元的数量; 所述多个开关由以任何合适逻辑实现的控制模块控制。
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公开(公告)号：US20220029535A1
公开(公告)日：2022-01-27
申请号：US16888853
申请日：2020-06-01
申请人： King Kuen Hau
发明人： King Kuen Hau
摘要： A power control circuit comprising a power supply and a load, the load being synthesized from an impedance synthesizer comprising two-terminal impedance elements connected in series and grouped in impedance modules. The impedance elements in each impedance module are of equal value, while those between the modules bear ratios uniquely defined according to the numbers of impedance elements in the impedance modules. A number of switches associated with said impedance elements short out a selected number of the impedance elements under the control of a first analog signal which may be preprocessed by an analytic function. The analog signal is converted to digital signals by an analog-to-digital converter, then level shifted to control the switches associated with the impedance elements, whereby the amount of power delivered to the load is controllable by the first analog signal. Pulse-width-modulation is deployed to further control the power by a second analog signal, with additional benefit of overload protection.
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公开(公告)号：US10715116B2
公开(公告)日：2020-07-14
申请号：US16081932
申请日：2017-03-29
申请人： King Kuen Hau
发明人： King Kuen Hau
IPC分类号： H03L5/00 , H03K3/012 , H02M1/08 , H02M3/06 , H03K5/00 , H03K19/0175 , H03H5/12 , G06G7/163 , H02M1/00 , H02M1/34 , H02M7/06
摘要： A power control circuit comprising a power supply and a load, the load being synthesized from an impedance synthesizer comprising two-terminal impedance elements connected in series and grouped in impedance modules. The impedance elements in each impedance module are of equal value, while those between the modules bear ratios uniquely defined according to the numbers of impedance elements in the impedance modules. A number of switches associated with said impedance elements short out a selected number of the impedance elements under the control of a first analog signal which may be preprocessed by an analytic function. The analog signal is converted to digital signals by an analog-to-digital converter, then level shifted to control the switches associated with the impedance elements, whereby the amount of power delivered to the load is controllable by the first analog signal. Pulse-width-modulation is deployed to further control the power by a second analog signal, with additional benefit of overload protection.
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公开(公告)号：US20190089336A1
公开(公告)日：2019-03-21
申请号：US16081932
申请日：2017-03-29
申请人： King Kuen HAU
发明人： King Kuen Hau
IPC分类号： H03K3/012 , H03K5/00 , H03K19/0175 , H02M3/06 , H02M1/08
摘要： A power control circuit comprising a power supply and a load, the load being synthesized from an impedance synthesizer comprising two-terminal impedance elements connected in series and grouped in impedance modules. The impedance elements in each impedance module are of equal value, while those between the modules bear ratios uniquely defined according to the numbers of impedance elements in the impedance modules. A number of switches associated with said impedance elements short out a selected number of the impedance elements under the control of a first analog signal which may be preprocessed by an analytic function. The analog signal is converted to digital signals by an analog-to-digital converter, then level shifted to control the switches associated with the impedance elements, whereby the amount of power delivered to the load is controllable by the first analog signal. Pulse-width-modulation is deployed to further control the power by a second analog signal, with additional benefit of overload protection.
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