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1. 发明授权

US07660083B2 Electromechanical and solid-state AC relay with reduced arcing 有权
标题翻译：机电和固态交流继电器减少电弧
公开(公告)号：US07660083B2
公开(公告)日：2010-02-09
申请号：US11834104
申请日：2007-08-06
申请人： Li Yao , Shu Peng Chen , Yong Wei
发明人： Li Yao , Shu Peng Chen , Yong Wei
IPC分类号： H02H3/00 , H02H7/00
CPC分类号： H01H9/542 , Y10T307/911
摘要： An electromechanical/solid-state AC relay has an electromechanical winding coil that moves an armature to force mechanical contacts to open or close. Electrical arcing across the mechanical contacts that occur as the contacts are opening or closing can damage and severely reduce the lifetime of the relay. Contact arcing is prevented by pulsing a triac on for a short period of time just before and after the mechanical contacts make or break contact. The triac limits the voltage difference across the mechanical contacts to less than one volt to prevent arcing. The triac is turned off after the mechanical contacts finish moving, reducing the heating and average power through the triac. A zero-sampling circuit that detects when the AC input voltage switches across 0 volts and activates a control integrated circuit to switch on the triac during zero-crossings to minimize power surges.
摘要翻译：机电/固态AC继电器具有机电绕组线圈，其使衔铁移动以迫使机械触点打开或关闭。触头断开或闭合时，机械触头间的电弧会损坏继电器的使用寿命。通过在机械触点产生或断开触点之前和之后的短时间内脉冲三端双向可控硅开关来防止接触电弧。三端双向可控硅开关元件将机械触点两端的电压差限制在小于一伏，以防止电弧。在机械接触完成移动之后，三端双向可控硅开关被关闭，从而降低了通过三端双向可控硅开关元件的加热和平均功率。一个零采样电路，用于检测交流输入电压何时切换到0伏特，并激活一个控制集成电路，以便在过零时切换到三端双向可控硅开关以最小化功率浪涌。

2. 发明授权

US07034588B2 Calibration of up and down charge-pump currents using a sample-and-hold circuit during idle times 失效
标题翻译：在空闲时间内使用采样保持电路校准上下电荷泵电流
公开(公告)号：US07034588B2
公开(公告)日：2006-04-25
申请号：US10711151
申请日：2004-08-27
申请人： Vincent Sin-Luen Cheung , Gary Wing-Kei Wong
发明人： Vincent Sin-Luen Cheung , Gary Wing-Kei Wong
IPC分类号： H03L7/06
CPC分类号： H03L7/0896
摘要： A charge pump for a phase-locked loop (PLL) has accurate matching of charge and discharge currents applied to the PLL's loop filter. A variable current-sink transistor has its gate-to-source voltage adjusted to match a source current from a fixed current source. An intermediate node in-between series transistors between the current source and sink is sampled by a sampling transistor that connects the intermediate node to a sampling capacitor. The sampling capacitor's voltage is the gate-to-source voltage of the variable current-sink transistor. The variable current-sink transistor has its gate and drain coupled together through the sampling transistor during calibration periods when the charge pump is otherwise idle. When the source current exactly matches the sink current, the gate-to-source voltage stored on the sampling capacitor reaches steady state. Up and down currents are balanced in driver transistors that match the series transistors.
摘要翻译：用于锁相环（PLL）的电荷泵具有对施加到PLL环路滤波器的充电和放电电流的精确匹配。可变电流 - 宿信号晶体管的栅极 - 源极电压被调整以匹配来自固定电流源的源极电流。电流源和吸收器之间的串联晶体管之间的中间节点由将中间节点连接到采样电容器的采样晶体管采样。采样电容器的电压是可变电流 - 宿晶体管的栅极 - 源极电压。当电荷泵空闲时，可变电流 - 宿晶体管的栅极和漏极在校准周期期间通过采样晶体管耦合在一起。当源极电流与吸收电流完全一致时，存储在采样电容器上的栅极 - 源极电压达到稳定状态。在串联晶体管匹配的驱动晶体管中，上下电流是平衡的。

3. 发明授权

US07994455B2 Control circuit for fast heating of a positive-temperature-coefficient heating component 有权
标题翻译：用于快速加热正温系数加热部件的控制电路
公开(公告)号：US07994455B2
公开(公告)日：2011-08-09
申请号：US11870244
申请日：2007-10-10
申请人： Qun Song , Fang Xie , Qi Wu , Zeyu Huang
发明人： Qun Song , Fang Xie , Qi Wu , Zeyu Huang
IPC分类号： B23K1/02
CPC分类号： H05B1/0255 , A45D1/28 , H05B2203/02
摘要： Traditional temperature-control products have the problem that the temperature of the working surface reaches the setting temperature too slowly when heating up or recovering from a temperature drop. A traditional temperature control circuit and temperature-settings selector components are modified to solve this problem. When heating begins, the modified circuit increases the initial setting temperature to be above the target setting temperature. The modified circuit then adjusts the setting temperature by measuring the heating power consumption. Once the working surface of the temperature control product reaches the initial setting temperature, the heating power consumption drops and the modified circuit reduces the temperature setting to the target setting temperature. The temperature control product can rapidly achieve the target temperature. A positive-temperature-coefficient heating component is used in the temperature control product.
摘要翻译：传统的温度控制产品存在如下问题：当加热或从温度下降恢复时，工作表面的温度达到设定温度太慢。传统的温度控制电路和温度设置选择器组件被修改以解决这个问题。当加热开始时，修改的电路将初始设定温度提高到高于目标设定温度。然后，修改的电路通过测量加热功率消耗来调节设定温度。一旦温度控制产品的工作表面达到初始设定温度，加热功率消耗下降，修改后的电路将温度设置降低到目标设定温度。温控产品可以快速达到目标温度。在温度控制产品中使用正温系数加热部件。

4. 发明授权

US07746087B2 Heating-control isolation-diode temperature-compensation 有权
标题翻译：加热控制隔离二极管温度补偿
公开(公告)号：US07746087B2
公开(公告)日：2010-06-29
申请号：US11777719
申请日：2007-07-13
申请人： Qun Song , Qi Wang , Fang Xie , De-Song Huang , Qi Xu
发明人： Qun Song , Qi Wang , Fang Xie , De-Song Huang , Qi Xu
IPC分类号： G01K7/00 , G01K1/00 , H01L35/00
CPC分类号： G01K1/20 , G01K7/16 , G01K2207/00
摘要： A semiconductor integrated circuit (IC) acts as a controller of a heating-controlled device or appliance. A heating body has a positive temperature coefficient and acts as both a heating element and a temperature sensor. A Silicon-Controlled Rectifier (SCR) switches AC current to the heating body to increase its temperature. When the SCR switches off, temperature sensing is performed using a sampling resistor, isolation diode, voltage comparator, and switch for a low-voltage DC supply are formed on an integrated circuit that has a first circuit branch and a second circuit branch. A compensation diode and a compensation resistor can be added in parallel to reference resistors. The compensation diode compensates for the forward voltage drop of the isolation diode that would otherwise create an inaccurate temperature measurement. The diodes have the same temperature response, allowing for a more accurate temperature measurement over a full temperature range of the sensorless appliance.
摘要翻译：半导体集成电路（IC）用作加热控制装置或器具的控制器。加热体具有正温度系数并且充当加热元件和温度传感器。硅控整流器（SCR）将交流电流切换到加热体以增加其温度。当SCR关断时，使用采样电阻器进行温度检测，隔离二极管，电压比较器和用于低压直流电源的开关形成在具有第一电路支路和第二电路支路的集成电路上。补偿二极管和补偿电阻可以与参考电阻并联。补偿二极管补偿隔离二极管的正向压降，否则会产生不准确的温度测量。二极管具有相同的温度响应，允许在无传感器设备的整个温度范围内进行更准确的温度测量。

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