Abstract: A LED lighting system, such as a dimmable LED lamp, that may simulate the performance of an incandescent bulb. LED strings of different colors may be connected to the output of a single LED driver that regulates an overall intensity of light produced by the LED lighting system. The color of the LED lighting system may be controlled by circuitry, such as one or more switches, that allocates current between the LED strings to change the color temperature of light emitted by the LED lighting system as the light intensity changes.

Abstract: A circuit provides for regulating charge and discharge current of a battery. A bypass circuit is connected to a terminal of the battery and connected in parallel with a load switch. The bypass circuit may selectively direct a bypass current around the load switch. A controller can operate in plural modes to control the bypass circuit. In a first mode, the controller controls one or more parameters of the bypass current based on values corresponding to a current at the terminal, a voltage at the terminal, and/or a temperature of the battery. In a second mode, the controller controls the bypass circuit to disable the bypass current.

Abstract: A touch screen panel and a manufacturing method thereof and a display device are provided. The manufacturing method for a touch screen includes: forming an auxiliary film layer on a first substrate, wherein the auxiliary film layer includes a catalyst capable of accelerating a formation reaction rate of graphene; patterning the auxiliary film layer to obtain an auxiliary pattern layer having a first pattern; forming a graphene pattern layer on the auxiliary pattern layer, the graphene pattern layer having a second pattern; forming a base film on the graphene pattern layer; and removing the first substrate and the auxiliary pattern layer.

Abstract: A LED lighting system, such as a dimmable LED lamp, that may simulate the performance of an incandescent bulb. LED strings of different colors may be connected to the output of a single LED driver that regulates an overall intensity of light produced by the LED lighting system. The color of the LED lighting system may be controlled by circuitry, such as one or more switches, that allocates current between the LED strings to change the color temperature of light emitted by the LED lighting system as the light intensity changes.

Abstract: A solid state lighting driver circuit containing an input for connection with a ballast; an output for driving a light emitting element; and a switch is provided. The switch is selectively operable to transition between a first state providing a low impedance path for a ballast output and a second state where the ballast output drives the output. A solid state lighting driver circuit has a switch connected across its input that selectively drives the circuit with a ballast output, or provides a low impedance path for the ballast output so that the ballast goes into self-protection mode. This means that the driver circuit is compatible with an electronic ballast but is well regulated. Also, a method controlling a solid state lamp for selectively driving a load with a ballast or providing a low impedance path for a ballast output is presented.

Abstract: A solid state driver circuit that is compatible with either a low frequency mains or magnetic ballast supply or a high frequency electronic ballast input is presented. An input detection circuit detects the frequency of the supply and selectively adjusts the drive circuit to act as a linear regulator when an electronic ballast is detected, or as a switched mode regulator when mains or a magnetic ballast is detected. There is also provided a method of driving a solid state lamp. The method has a step which receives an input power supply. The method also has an enabling operation of a switching regulator or the shorting of a switching regulator according to the frequency of the input power supply.

Abstract: Provided are methods for preparing a nickel-cobalt-aluminum precursor material and a cathode material with a gradient distribution of aluminum element. The precursor material and the cathode material based on the precursor material prepared by the methods are of sphere or sphere-like shapes in which the distribution of the aluminum element is changed in a gradient manner, and the particle size distribution is uniform. The synthesized material has a high tap density, is not sensitive to ambient carbon dioxide and moisture, and has a good processability, a high specific capacity and a good stability property.

Abstract: A LED lighting system, such as a dimmable LED lamp, that may simulate the performance of an incandescent bulb. LED strings of different colors may be connected to the output of a single LED driver that regulates an overall intensity of light produced by the LED lighting system. The color of the LED lighting system may be controlled by circuitry, such as one or more switches, that allocates current between the LED strings to change the color temperature of light emitted by the LED lighting system as the light intensity changes.

Abstract: An intelligent control faucet includes a faucet that includes a manual operation valve, an intelligent control module, a water egress tube, a cold water ingress tube, a hot water ingress tube, and a magnetic reed detection device. The water egress tube, the cold water ingress tube, and the hot water ingress tube are connected to the manual operation valve. The intelligent control module is connected, in a series manner, to the water egress tube. The magnetic reed detection device is mounted to the water egress tube and is connected through a feeding cable or directly to the intelligent control module. Water flow can be established or cut off through pulling the water egress tube so that the use is made easy.

Abstract: An integrated heat sink array is introduced in SOI power devices having multiple unit cells, which can be used to reduce the temperature rise in obtaining more uniform temperature peaks for all the unit cells across the device area, so that the hot spot which is prone to breakdown can be avoided, thus the safe operating area of the device can be improved. Also the array sacrifice less area of the device, therefore results in low Rdson.

Abstract: An intelligent control faucet includes a faucet that includes a manual operation valve, an intelligent control module, a water egress tube, a cold water ingress tube, a hot water ingress tube, and a magnetic reed detection device. The water egress tube, the cold water ingress tube, and the hot water ingress tube are connected to the manual operation valve. The intelligent control module is connected, in a series manner, to the water egress tube. The magnetic reed detection device is mounted to the water egress tube and is connected through a feeding cable or directly to the intelligent control module. Water flow can be established or cut off through pulling the water egress tube so that the use is made easy.

Abstract: An intelligent control faucet includes a faucet that includes a manual operation valve, an intelligent control module, a water egress tube, a cold water ingress tube, a hot water ingress tube, and a magnetic reed detection device. The water egress tube, the cold water ingress tube, and the hot water ingress tube are connected to the manual operation valve. The intelligent control module is connected, in a series manner, to the water egress tube. The magnetic reed detection device is mounted to the water egress tube and is connected through a feeding cable or directly to the intelligent control module. Water flow can be established or cut off through pulling the water egress tube so that the use is made easy.

Abstract: An integrated heat sink array is introduced in SOI power devices having multiple unit cells, which can be used to reduce the temperature rise in obtaining more uniform temperature peaks for all the unit cells across the device area, so that the hot spot which is prone to breakdown can be avoided, thus the safe operating area of the device can be improved. Also the array sacrifice less area of the device, therefore results in low Rdson.

Abstract: A switching power converter includes a controller configured to transition from a first operating mode to a second operating mode by determining the operating conditions at the transition point between the operation modes. The controller uses the value of the voltage-time product determined at the boundary between the first and second operating modes to predict the voltage to be applied to the primary-side of the transformer. Using the predicted voltage, the controller can adjust the peak-power control threshold on a cycle-by-cycle basis without the transformer reaching saturation.

Abstract: A switching power converter includes a controller configured to transition from a first operating mode to a second operating mode by determining the operating conditions at the transition point between the operation modes. The controller uses a point where a switch included in the power converter would have been turned on if operating under the first operating mode as a reference point to determine when to turn on the switch under the second operating mode. Using the reference point, the switching power converter determines a control period for regulating the switching period of the switch in a second operating mode.

Abstract: A light emitting diode (LED) controller provides constant current regulation for a converter circuit providing current to an LED. The LED controller senses an inductor voltage and determines an inductor reset time from the sensed inductor voltage. Based on the determined inductor reset time, a switch on time and a switch period, the LED controller generates a control signal modifying the state of a switch coupling the converter circuit to an input voltage.

Abstract: An integrated LED controller drives and reads a passive dimmer and controls a power circuit for the LED. The integrated LED controller detects changes in the position of the passive dimmer and causes the power circuit to brighten or dim the LED accordingly. These functions are normally performed by multiple discrete components. However, the integrated LED controller is implemented as a single integrated circuit, thus reducing the size and cost of the LED dimming system. The integrated LED controller can also include a unified timing controller that coordinates the timing of multiple functions within the controller in a manner that reduces the noise sensitivity of the controller.

Abstract: A TRIAC dimmer controller for an LED lamp dynamically adjusts the amount of additional current supplied to the TRIAC dimmer based on the TRIAC dimmer operating mode. A TRIAC dimmer current controller continually senses the TRIAC dimmer current loading and determines a TRIAC dimmer operating mode based on the detected current. The TRIAC dimmer controller compares the detected current with a threshold current value called a TRIAC holding current, and adjusts the amount of bleeder current based on the difference between the detected current and the threshold current value. By continually sensing the TRIAC dimmer current loading, the LED controller regulates the amount of bleeder current supplied to the TRIAC dimmer using a single sink current path to satisfy the TRIAC dimmer current demands of multiple TRIAC dimmer operating modes.

Abstract: An LED controller reduces jitter of an LED lamp. In one embodiment, the LED controller includes a jitter detection circuit adapted to determine an amount of jitter in an input voltage signal. The input voltage signal includes a plurality of cycles and indicates an amount of dimming for the LED lamp. The LED controller further includes a jitter compensation circuit, which generates a control signal to control regulated in the LED lamp such that an output light intensity of the LED lamp substantially corresponds to the amount of dimming for the LED lamp. The control signal controls current delivery to the LED lamp to compensate for the determined amount of jitter in the input voltage signal.

Abstract: An intelligent control faucet includes a faucet that includes a manual operation valve, an intelligent control module, a water egress tube, a cold water ingress tube, a hot water ingress tube, and a magnetic reed detection device. The water egress tube, the cold water ingress tube, and the hot water ingress tube are connected to the manual operation valve. The intelligent control module is connected, in a series manner, to the water egress tube. The magnetic reed detection device is mounted to the water egress tube and is connected through a feeding cable or directly to the intelligent control module. Water flow can be established or cut off through pulling the water egress tube so that the use is made easy.