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公开(公告)号：US09577610B2
公开(公告)日：2017-02-21
申请号：US13080136
申请日：2011-04-05
申请人： Kevin Peter D'Angelo
发明人： Kevin Peter D'Angelo
CPC分类号： H03K3/012 , H05B33/0815 , H05B33/0818 , Y02B20/341
摘要： An active clamp current sink is used to voltage protect a low voltage rated, high power current sink that drives illumination current through a string of serially connected LEDs. When the LEDs are turned off as part of a PWM configuration, the forward voltage on the LEDs falls, and the voltage presented to the low voltage rated, high power current sink rises. The active clamp current sink monitors the voltage across the high power current sink and ensures that an adequate current flows through the LEDs. This minimally adequate current maintains a sufficiently large forward voltage through the LEDs, and therefore a sufficiently small voltage is presented to the high power current sink.
摘要翻译： 有源钳位电流吸收器用于电压保护低电压额定的大功率电流吸收器，其通过串联的LED串来驱动照明电流。 当LED作为PWM配置的一部分关闭时，LED上的正向电压下降，并且提供给低电压额定值的高功率电流吸收器的电压上升。 有源钳位电流吸收器监测大功率电流吸收器两端的电压，并确保足够的电流流过LED。 这种最小的电流通过LED保持足够大的正向电压，因此向高功率电流吸收器提供足够小的电压。
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公开(公告)号：US20160189490A1
公开(公告)日：2016-06-30
申请号：US14583680
申请日：2014-12-27
摘要： An improved all electronic sensor to detect when a whistle emits an audio signal. The electronic sensor activates an additional function such as a light, or signaling device to activate remote functions, such as submerged speakers, or time keeping apparatus.
摘要翻译： 改进的所有电子传感器，以检测何时发出音频信号。 电子传感器激活诸如光或信号装置的附加功能以激活远程功能，例如浸没式扬声器或计时装置。
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公开(公告)号：US09429965B2
公开(公告)日：2016-08-30
申请号：US12611853
申请日：2009-11-03
CPC分类号： H05B33/0815 , G05F1/461 , G05F1/565 , H02M3/04 , H05B33/0827 , H05B33/0845
摘要： A multiple chip voltage feedback technique allows multiple strings of LED's and current sinks to be efficiently powered by a DC-to-DC voltage converter within an appliance. A connected series of differential amplifiers or multiplexers are used to monitor the voltages between the connected LED's and the current sinks, progressively determine the lowest voltage, and then feed the lowest voltage back to the voltage converter. The DC-to-DC voltage converter monitors this lowest voltage and adjusts its output in order to ensure that the strings have adequate voltage with which to function, even as the LED's have different forward voltages and the strings are asynchronously enabled and disabled.
摘要翻译： 多芯片电压反馈技术允许多个LED串和电流吸收器由设备内的DC-DC电压转换器有效地供电。 使用连接的差分放大器或多路复用器系列来监视连接的LED和电流吸收器之间的电压，逐渐确定最低电压，然后将最低电压馈送到电压转换器。 DC-DC电压转换器监控这个最低电压并调整其输出，以确保串具有足够的电压，即使LED具有不同的正向电压，并且串是异步启用和禁用的。
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公开(公告)号：US20130293208A1
公开(公告)日：2013-11-07
申请号：US12611853
申请日：2009-11-03
IPC分类号： G05F1/46
CPC分类号： H05B33/0815 , G05F1/461 , G05F1/565 , H02M3/04 , H05B33/0827 , H05B33/0845
摘要： A multiple chip voltage feedback technique allows multiple strings of LED's and current sinks to be efficiently powered by a DC-to-DC voltage converter within an appliance. A connected series of differential amplifiers or multiplexers are used to monitor the voltages between the connected LED's and the current sinks, progressively determine the lowest voltage, and then feed the lowest voltage back to the voltage converter. The DC-to-DC voltage converter monitors this lowest voltage and adjusts its output in order to ensure that the strings have adequate voltage with which to function, even as the LED's have different forward voltages and the strings are asynchronously enabled and disabled.
摘要翻译： 多芯片电压反馈技术允许多个LED串和电流吸收器由设备内的DC-DC电压转换器有效地供电。 使用连接的差分放大器或多路复用器系列来监视连接的LED和电流吸收器之间的电压，逐渐确定最低电压，然后将最低电压馈送到电压转换器。 DC-DC电压转换器监控这个最低电压并调整其输出，以确保串具有足够的电压，即使LED具有不同的正向电压，并且串是异步启用和禁用的。
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