Abstract: A flicker-free linear LED drive circuit is disclosed. The flicker-free linear LED drive circuit converts the input voltage of the external power supply to form an output current to the LED. The flicker-free linear LED drive circuit includes a measuring module, a regulating module and a rectifier module. The flicker-free linear LED drive circuit is characterized in that the measuring module is configured to measure the phase angle of the input voltage after full-wave rectification; the regulating module is used to form the complex voltage signal according to the measurement signal in the voltage waveform of the regulating module for the half-wave period, the conduction angle range formed at the fixed power is used as the basis for electrical conduction in the half-wave period of the input voltage.

Abstract: A flicker-free linear LED drive circuit is disclosed. The flicker-free linear LED drive circuit converts the input voltage of the external power supply to form an output current to the LED. The flicker-free linear LED drive circuit includes a measuring module, a regulating module and a rectifier module. The flicker-free linear LED drive circuit is characterized in that the measuring module is configured to measure the phase angle of the input voltage after full-wave rectification; the regulating module is used to form the complex voltage signal according to the measurement signal in the voltage waveform of the regulating module for the half-wave period, the conduction angle range formed at the fixed power is used as the basis for electrical conduction in the half-wave period of the input voltage.

Abstract: A high-voltage linear drive and memory dimming LED lighting device is disclosed. The lighting device includes a high voltage linear constant current circuit, a control IC, a first LED string and a second LED string. The control IC is electrically connected to the high voltage linear constant current circuit, and the control IC is directly driven by receiving high voltage signals. Wherein, the control IC includes a voltage regulator module, a switching module and a memory module. The voltage regulator module is electrically connected to the high voltage linear constant current circuit; the switching module is electrically connected to the voltage regulator module and includes at least two electronic switches; and the memory module is electrically connected to the switching module.

Abstract: Disclosed are a light-emitting device for digital control of color temperature modulation and its application. The light-emitting device is electrically connected to a wall switch and includes a DIP switch, first LEDs, second LEDs and a control module. The control module is electrically connected to the above components and contains a truth table. The truth table includes at least a first mode, second mode, third mode and a memory and automatically switch mode, and a digital switching is accomplished by correlating the DIP switch to the truth table. In the memory and automatically switch mode, the first to third mode color temperatures are sequentially switched and controlled by turning on or off the wall switch according to the truth table information. The light-emitting device may be applied to light fixtures or mirror products to improve the convenience of use.

Abstract: A micro dimming module for driving at least one LED and supporting a TRIAC dimmer to linearly adjust the illumination of the LED comprises a light board, a rectifier and a controller. The light board is a circuit board with a diameter less than or equal to 3 cm or a side length less than or equal to 3 cm, and the rectifier is built without a RC circuit. Namely, the TRIAC dimmer is capable of remaining in a stable working condition without requiring the RC circuit to supply a holding current, so that the lighting application has the advantages of minimizing volume and accomplishing high adaptability and applicability.

Abstract: A flicker-free dimming circuit for non-point light source has a TRIAC module, an input module, a conversion module and an output module. The TRIAC module adjusts the voltage phase of an external power supply for the input module to export an input voltage, and the conversion module in a boost circuit structure is provided with a conversion coil and a converter to receive and raise the voltage value of the input voltage to a voltage value of an operating voltage and then supplies the operating voltage to the output module. The output module adopts a fly-back circuit structure and induces the operating voltage to form a driving voltage in a constant value and then outputs the driving voltage to a lamp with a relatively wide light source area. In this way, the panel lamp can meet high safety standards and enhance its product adaptability and competiveness.

Abstract: An electronic device including a body and a light source module is provided. The body has a side on which an unstable display is disposed and another side on which a bi-stable display is disposed. The light source module is arranged inside the body and configured to provide a light source to one or none of the unstable display and the bi-stable display.

Abstract: A secondary-side bucking and current-stabilizing flyback power converter adopts a dual-stage isolated circuit architecture and outputs a constant output current to drive a low-power LED module, and its primary stage adopts a flyback circuit architecture with a primary regulated voltage, and its secondary stage adopts of a buck circuit architecture of the current stabilizer, so that after the primary stage converts the constant voltage, the current stabilizer senses the load effect of the output current at the LED module to regulate the output cycle and maintain the total output of the output current constant and reduce the ripple amplitude, so as to achieve a non-strobe output result and improve the illumination effect of the LED module.

Abstract: A thin film transistor (TFT) substrate includes a substrate which is a flexible substrate, and a TFT structure disposed on the substrate and including a gate layer, a gate insulator layer, a first channel island and a second channel island. The gate layer is disposed on the substrate and including a first gate electrode and a second gate electrode electrically connected to each other. The first and second gate electrodes are parts of the same TFT structure. The gate insulator layer covers the first and second gate electrodes. The first and second channel islands are disposed on the gate insulator layer and respectively correspond to the first and second gate electrodes. The source and drain layer is disposed on the gate insulator layer and next to the first and second channel islands, wherein the source and drain layer partially covers top surfaces of the first and second channel islands.

Abstract: An LED light bulb using a lamp cap for heat dissipation includes abuse a first substrate for carrying LEDs, a cooling carrier seat installed in the base and having a carrying portion and at least one supporting rib, and the supporting rib has an end fixed to the carrying portion and the other end fixed to the cooling carrier seat.

Abstract: An automatically controlled directional speaker includes a sound amplifying device, an image capture device, a computing device, an azimuth control motor and an amplitude control unit. The image capture device is provided for detecting the status of surrounding environment to generate image information, and the computing device is communicatively coupled to the image capture device for determining whether there is at least one face information in the image information, and the azimuth control motor is coupled to the sound amplifying device for controlling the azimuth of an output sound of the sound amplifying device according to the face information, and the amplitude control unit is communicatively coupled to the sound amplifying device for controlling the volume of the output sound of the sound amplifying device according to the face information. The speaker may be combined with a lamp to form an LED lamp with broadcasting and illumination functions.

Abstract: An automatically controlled directional speaker includes a sound amplifying device, an image capture device, a computing device, an azimuth control motor and an amplitude control unit. The image capture device is provided for detecting the status of surrounding environment to generate image information, and the computing device is communicatively coupled to the image capture device for determining whether there is at least one face information in the image information, and the azimuth control motor is coupled to the sound amplifying device for controlling the azimuth of an output sound of the sound amplifying device according to the face information, and the amplitude control unit is communicatively coupled to the sound amplifying device for controlling the volume of the output sound of the sound amplifying device according to the face information. The speaker may be combined with a lamp to form an LED lamp with broadcasting and illumination functions.

Abstract: An auto-sensing dimming lamp guides ambient light to a sensor installed in a lamp cover and at a base through a light pipe. The auto-sensing dimming lamp automatically adjusts a light emission status of LED light sources according to the ambient light by a processor installed at the base. The processor includes a pass filter unit and a modulation unit, and the pass filter unit receives a detected signal waveform of the sensor and a driving voltage waveform of the LED light sources.

Abstract: A self-excited TRIAC dimming circuit applied in a panel light includes a dimming module and at least one conversion module, and a power factor controller (PFC) is installed in the dimming module, and the conversion module is a self-excited electronic isolation transformer, and the TRIAC PFC is integrated with the circuit structure of a self-excited electronic transformer to improve the overall circuit stability, so that the panel light complies with a high safety standard to enhance product applicability and competitiveness.

Abstract: A linear dimming LED driver circuit capable of adjusting color temperature used in a lamp of a down light or a tube light to drive a plurality of LED strings to emit light and the LED strings are formed by yellow-light and ultra blue LEDs. The circuit uses a switch to switch the conduction of the LED strings to change the color temperature of the light emission of the lamp, so that the control module will adjust the light emitting brightness of the lamp for better dimming range and work performance of the whole circuit if a driving voltage is in a mono sinusoidal voltage section greater than or equal to 129 volts and smaller than or equal to 135 volts.

Abstract: An auto-sensing dimming lamp guides ambient light to a sensor installed in a lamp cover and at a base through a light pipe. The auto-sensing dimming lamp automatically adjusts a light emission status of LED light sources according to the ambient light by a processor installed at the base. The processor includes a pass filter unit and a modulation unit, and the pass filter unit receives a detected signal waveform of the sensor and a driving voltage waveform of the LED light sources.

Abstract: A wireless composite device includes an antenna, an AC-to-DC driving circuit, an LED circuit board and a router. The AC-to-DC driving circuit converts an inputted AC into an outputted DC through a transmission signal of an antenna and supplies the outputted DC to drive the parallelly installed LED circuit board and router, so as to control the power conversion and supply of the AC-to-DC driving circuit through the wireless communication. In addition, different electronic devices are combined to save installation cost and space. Further, a multifunctional lamp including an antenna with a Bluetooth module, an LED driving circuit, at least one LED lamp and a router is disclosed. The LED driving circuit performs an AC-to-DC conversion through the Bluetooth communication and drives the LED lamp and the router, so that the lamp provides an illumination function and the router provides a network connection function.

Abstract: Disclosed is a purely resistive dimming circuit for driving LEDs to emit light and support an LED dimming function. The LEDs are divided into a first string and a second string connected in series with each other. The purely resistive dimming circuit is respectively and electrically coupled to an anode terminal of the first string and an anode terminal of the second string by a driving resistor and a current limiting resistor which are connected in series with each other. The resistance of the driving resistor restricts the LEDs to emit light at different stages to enhance the working efficiency of circuits, while using the property of the current limiting resistor to limit the overvoltage current, so as to achieve a constant power operating effect.

Abstract: A linear dimming LED driver circuit capable of adjusting color temperature used in a lamp of a down light or a tube light to drive a plurality of LED strings to emit light and the LED strings are formed by yellow-light and ultra blue LEDs. The circuit uses a switch to switch the conduction of the LED strings to change the color temperature of the light emission of the lamp, so that the control module will adjust the light emitting brightness of the lamp for better dimming range and work performance of the whole circuit if a driving voltage is in a mono sinusoidal voltage section greater than or equal to 129 volts and smaller than or equal to 135 volts.