Abstract: Embodiments of the present invention relate to a bridgeless digital control power factor correction (PFC) circuit, with a symmetrical and balanced topology, for use in a device to eliminate the use of standby power when a plug is sitting idle in a socket. In embodiments, the bridgeless power factor correction circuit includes: a boost inductor, where the bridgeless power factor correction circuit has a symmetrical topology, and the boost inductor comprises an axis of the bridgeless power factor correction circuit; a first metal-oxide-semiconductor field-effect transistor (MOSFET) and a second MOSFET; and four diodes, wherein the four diodes comprise two slow diodes and two fast diodes. Embodiments of the present invention also relate to a power factor correction circuit, and methods of manufacturing the bridgeless power factor correction circuit and the power factor correction circuit.

Abstract: A standby circuit includes a power regulator configured to operate in an ON state and an OFF state; a power detecting circuit configured to detect power of a load; an integrated circuit module including two interfaces, each of the two interfaces configured to receive an ON operating command or an OFF operating command from a remote control device; and a proximity detection circuit configured to determine a proximity of each of the two interfaces to the remote control device.

Abstract: A standby circuit includes a power regulator configured to operate in an ON state and an OFF state; a power detecting circuit configured to detect power of a load; an integrated circuit module including two interfaces, each of the two interfaces configured to receive an ON operating command or an OFF operating command from a remote control device; and a proximity detection circuit configured to determine a proximity of each of the two interfaces to the remote control device.

Abstract: A standby circuit includes a power regulator configured to operate in an ON state and an OFF state; a power detecting circuit configured to detect power of a load; an integrated circuit module including two interfaces, each of the two interfaces configured to receive an ON operating command or an OFF operating command from a remote control device; and a proximity detection circuit configured to determine a proximity of each of the two interfaces to the remote control device.

Abstract: A standby circuit includes a power regulator configured to operate in an ON state and an OFF state; a power detecting circuit configured to detect power of a load; an integrated circuit module including two interfaces, each of the two interfaces configured to receive an ON operating command or an OFF operating command from a remote control device; and a proximity detection circuit configured to determine a proximity of each of the two interfaces to the remote control device.

Abstract: A standby circuit includes a power regulator configured to operate in an ON state and an OFF state; a power detecting circuit configured to detect power of a load; an integrated circuit module including two interfaces, each of the two interfaces configured to receive an ON operating command or an OFF operating command from a remote control device; and a proximity detection circuit configured to determine a proximity of each of the two interfaces to the remote control device.

Abstract: A digital AC/DC power converter comprises an active PFC module, a single switch module having a single switch, a power output module having a transformer, a digital control module having a microcontroller, and a rectifying and filtering module having a full-bridge rectifier, an EMI filter, and a capacitor that is less than 1 ?F. The single switch is electrically connected to the active PFC module, and a primary winding of the transformer is electrically connected to the active PFC module. The microcontroller provides a PWM signal to control the switching state of the single switch, so that the active PFC module transforms AC frequency from less than 300 Hz into over 30,000 Hz and outputs a rectified AC voltage waveform. The EMI filter blocks high electromagnetic frequencies and the capacitor smooths a variation in the rectified voltage waveform and output the smoothed rectified voltage waveform to the active PFC module.

Abstract: A digital AC/DC power converter comprises an active PFC module, a single switch module having a single switch, a power output module having a transformer, a digital control module having a microcontroller, and a rectifying and filtering module having a full-bridge rectifier, an EMI filter, and a capacitor that is less than 1 ?F. The single switch is electrically connected to the active PFC module, and a primary winding of the transformer is electrically connected to the active PFC module. The microcontroller provides a PWM signal to control the switching state of the single switch, so that the active PFC module transforms AC frequency from less than 300 Hz into over 30,000 Hz and outputs a rectified AC voltage waveform. The EMI filter blocks high electromagnetic frequencies and the capacitor smooths a variation in the rectified voltage waveform and output the smoothed rectified voltage waveform to the active PFC module.

Abstract: A digital AC/DC power converter comprises an active PFC module, a single switch module having a single switch, a power output module having a transformer, and a digital control module having a microcontroller. The single switch is electrically connected to the active PFC module, and a primary winding of the transformer is electrically connected to the active PFC module. Moreover, the microcontroller provides a PWM signal to control the switching state of the single switch, so that the active PFC module transforms AC frequency from no more than 300 Hz into at least 30,000 Hz and outputs a rectified AC output voltage waveform to improve power factor.

Abstract: A standby circuit and device to reduce power consumption of appliances in standby mode comprise a power regulator, a power detecting circuit, and a HIC module. The HIC module can control the power regulator to turn off when a detected power consumption of a load is within a predetermined power consumption range.

Abstract: The invention provides an LED lighting device having a plurality of LED modules. Each LED module includes a housing structure, a plurality of LEDs disposed on the housing structure and a power converter that provides power to the LEDs. Each power converter of the LED modules operates independently. The LED lighting device of the present invention is more difficult to fail and may effectively reduce maintenance costs.

Abstract: A power transmitting apparatus for digitally controlling voltage and current of alternating current (AC) includes an input part, an output part, and a digital control part. The input part has a filtering protection module and a semiconductor switch module connected to the filtering protection module. The filtering protection module has an input interface for inputting an AC signal from a power source. The output part has a filtering module and a voltage and current feedback module connected to the filtering module. The voltage and current feedback module has an output interface for outputting the AC signal from the input part. The filtering module is connected to the semiconductor switch module of input part. The digital control part has a microcontroller unit (MCU) electrically connected to the filtering protection module, the semiconductor switch module, and the voltage and current feedback module, respectively.

Abstract: A digital AC/DC power converter comprises an active PFC module, a single switch module having a single switch, a power output module having a transformer, and a digital control module having a microcontroller. The single switch is electrically connected to the active PFC module, and a primary winding of the transformer is electrically connected to the active PFC module. Moreover, the microcontroller provides a PWM signal to control the switching state of the single switch, so that the active PFC module transforms AC frequency from no more than 300 Hz into at least 30,000 Hz and outputs a rectified AC output voltage waveform to improve power factor.

Abstract: The invention provides an LED lighting device having a plurality of LED modules. Each LED module includes a housing structure, a plurality of LEDs disposed on the housing structure and a power converter that provides power to the LEDs. Each power converter of the LED modules operates independently. The LED lighting device of the present invention is more difficult to fail and may effectively reduce maintenance costs.

Abstract: A power transmitting apparatus for digitally controlling voltage and current of alternating current (AC) includes an input part, an output part, and a digital control part. The input part has a filtering protection module and a semiconductor switch module connected to the filtering protection module. The filtering protection module has an input interface for inputting an AC signal from a power source. The output part has a filtering module and a voltage and current feedback module connected to the filtering module. The voltage and current feedback module has an output interface for outputting the AC signal from the input part. The filtering module is connected to the semiconductor switch module of input part. The digital control part has a MCU control module electrically connected to the filtering protection module, the semiconductor switch module, and the voltage and current feedback module, respectively.

Abstract: The invention provides a system and a device for reducing standby power consumption. The system for reducing standby power consumption, comprises a power regulator, a power detecting circuit and a HIC module, and the HIC module is controlled by a MCU to efficiently reduce standby power consumption.

Abstract: An LED power supply (LPS) (10) that is designed to replace conventional fluorescent lamps, which also include Compact Fluorescent Lamps (CFLs). The LPS (10) is comprised of three major elements: a power input circuit (PIC) (12), an LED Power Control Circuit (LPCC) (14) and an LED load 16. The PIC (12) can consist of either a d-c voltage source (12A) or an a-c voltage source (12B). The a-c voltage source (12B) is rectified and filtered to produce a filtered d-c voltage output (11?) prior to being applied to an OR gate (12D) from where a filtered d-c voltage (21) is produced and applied to the LPCC (14) for further processing. The CPCC (14) functions to automatically monitor and adjust both the voltage and the current that is applied to a plurality of LEDS 71 that comprise the LED load 16. The LED load is typically configured in a series-parallel configuration.

Abstract: A d-c to d-c converter circuit (DDCC) (10) that is comprised of a passive thin-film hybrid circuit that includes an input circuit (12), a voltage regulator circuit (14), a comparator circuit (16), an oscillator circuit (18) and an output circuit (20). The input circuit (12) is applied an input d-c voltage (11) from the vehicle's battery circuit (50). The input voltage (11) is converted by the DDCC (10) into an output d-c voltage (23) that is suitable to operate a set of LED tail lamps and/or a set of LED turn-signal lamps. The DDCC (10) is designed to replace a prior art heat-producing, voltage dropping resistive element (Rx) that drops the battery voltage to a suitable level to operate the LEDs. Additionally, the DDCC (10) is easily spliced into the vehicle's electrical wiring cable (54), requires a small mounting space and produces no significant heat.

Abstract: An LED blinker load assembly (LBLA) (10) that can be integrated into the envelope of an LED light bulb or be attached externally to a rear, front or side LED lamp assembly. The LBLA (10) is comprised of an input circuit (12) and an output circuit (14). The two circuits in combination produce a sufficient current flow to operate an LED load circuit (18) and to cause a conventional vehicle flasher unit (60) to be operated normally.

Abstract: A vehicle LED tail-light bulb (10) that is designed to replace an incandescent light bulb, to be inserted into a conventional right and left vehicle light socket and to function in combination with a vehicle battery that powers the bulb (10) and a flasher unit that is activated by a vehicle turn-signal arm. The LED tail-light bulb incorporates an electronics circuit consisting of an input circuit (12), an intermediate circuit (14) and an output circuit (16). The electronics circuit is designed to operate the left and right turn lights and in some cases an emergency light and to produce a current flow of sufficient magnitude to energize the vehicle flasher unit. The energized flasher unit then causes the bulb (10) to blink when the vehicle turn-signal arm is placed in either a right turn or a left turn position.