Patent application number | Description | Published |
20140028096 | RECTIFIER CIRCUIT AND ELECTRONIC DEVICE USING SAME - A rectifier circuit includes a three-phase AC power supply and a first rectifier unit. The three-phase AC power supply comprises a first AC voltage output terminal and a common terminal The three-phase AC power supply generates a first, a second, and a third AC voltage and outputs the AC voltages through output terminals and the common terminal The common terminal is grounded. The first rectifier unit converts each of the AC voltages into a first, second, and third DC voltage for independently powering separate loads. The first rectifier unit includes a grounded terminal connected to the common terminal to ground via a same conductive wire. | 01-30-2014 |
20140029321 | RECTIFICATION CIRCUIT - A rectification circuit includes a first input terminal, a first switch, an energy storage circuit, a first diode, a filtering circuit connected in series and in order to ground, a second diode, and a controller. Two opposite terminals of the second diode are connected to a first node between the first diode and the filtering circuit and a second node between the first switch and the energy storage circuit. The controller transmits control signals to the first switch and the second switch to control conductivities of the first switch and the second switch. | 01-30-2014 |
20140062205 | SOURCE SUPPLY CIRCUIT AND CONTROL METHOD THEREOF - A source supply circuit includes a main supply circuit for supplying a first directional current (DC) voltage, a solar supply circuit converting solar energy into electronic energy, an energy storing circuit for storing the energy generated both by the main supply circuit and the solar supply circuit, and a power regulator. The solar supply circuit further includes a current detector for detecting a current of the solar supply circuit, and a voltage detector for detecting a voltage of the solar supply circuit. The power regulator calculates an output power of the solar supply circuit according to the detected current and the detected voltage and adjusts the output power of the main supply circuit to make the solar supply circuit output a maximum power. | 03-06-2014 |
20140063879 | RECTIFIER CIRCUIT AND ELECTRONIC DEVICE USING SAME - A rectifier circuit includes a three-phase alternating current (AC) voltage, a first rectifier unit, a second rectifier unit, a third rectifier unit, a first voltage output terminal, a second voltage output terminal, a first energy storing circuit and a second energy storing circuit. The three-phase AC voltage generates a first AC voltage, a second AC voltage, and a third AC voltage, and outputs them to the first rectifier circuit, a second rectifier circuit, and a third rectifier circuit correspondingly. The first energy storing circuit and the second storing circuit are connected in series and are coupled between the first voltage output terminal and the second voltage output terminal, to drive a load. In a positive period of each AC voltage, the second energy storing circuit is charged by each rectifier unit. In a negative period of each AC voltage, the first energy storing circuit is charged by each rectifier unit. | 03-06-2014 |
20140063880 | RECTIFIER CIRCUIT AND ELECTRONIC DEVICE USING SAME - A rectifier circuit includes a first alternating current (AC) voltage input terminal, a second AC voltage input terminal, a signal generating circuit, a first energy generating circuit, a second energy generating circuit, a third energy generating circuit, a first output terminal, and a second output terminal The first and second AC voltage input terminals receive an AC voltage. The signal generating circuit generates control signals. The first energy storing circuit is charged by the AC voltage. In a positive period of the AC voltage, the first energy storing circuit discharges to the second energy storing circuit. In a negative period of the AC voltage, the first energy storing circuit discharges to the third energy storing circuit The second energy storing circuit and the third energy storing circuit discharge to a load via the first output terminal | 03-06-2014 |
20140111177 | DC-DC CONVERTER AND METHOD FOR DRIVING SAME - A voltage conversion circuit includes a first signal generating unit, a signal processing unit, and a voltage converting unit. The first signal generating unit generates a first pulse width modulation (PWM) signal. The signal processing unit includes a second signal generating unit, a first logic unit, and a second logic unit. The second signal generating unit generates a second PWM signal. A frequency of the first PWM signal is different from a frequency of the second PWM signal. The first logic unit performs an AND operation to the first and second PWM signals to obtain a first control signal. The second logic unit performs a NOT operation on the first control signal to obtain a second control signal. The voltage converting unit converts a first direct current (DC) voltage into a second DC voltage under control of the first control signal and the second control signal. | 04-24-2014 |
20140117755 | POWER SYSTEM - A power system for supplying direct current (DC) voltage to a load requiring same includes a main power supply outputting a first alternating current (AC) power, an auxiliary power supply outputting a first DC power directly, and a bidirectional power factor correction device. When the bidirectional power factor correction determines that the first DC power is more than a rate power of the load, the auxiliary power supply outputs only a first part of the first DC power to the load, and outputs a second part to the bidirectional power factor correction. The bidirectional power factor correction converts the second part into a second DC power, and redirects the second DC power into the main power supply. The first part of the first DC power output allowed into the load equals to the rated power of the load. | 05-01-2014 |
20140176109 | SOLAR POWER SUPPLY DEVICE - A solar power supply device includes a solar panel converting solar energy to electrical power with a DC voltage, a voltage convertor connected to the solar panel, a control unit, and a PWM signal processing unit. The voltage convertor converts the DC voltage to a power voltage to power the electrical equipment. The control unit outputs a first and a second PWM signal, and adjusts duty cycles of the first PWM signal and/or the second PWM signal by determining whether the electrical power output by the solar panel can drive the electrical equipment. The PWM signal processing unit multiplies the first PWM signal and the second PWM signal to obtain a third PWM signal, and output the third PWM signal to the voltage convertor to control the voltage convertor to output the corresponding power voltage. | 06-26-2014 |
20150045979 | MAXIMUM POWER POINT TRACKING SYSTEM AND METHOD FOR TRACKING MAXIMUM POWER POINT OF PHOTOVOLTAIC DEVICE - A maximum power point tracking (MPPT) system and method applied to a photovoltaic (PV) device includes an MPPT device and a temperature control device within a load module. The MPPT system includes a control unit, a detection unit, and a determination unit and a first command to increase power to the temperature control device and the detection unit detects output power before the command and output power after the command. The determination unit determines whether the second output power is greater than the first output power. The control unit repeats the first command to the temperature control device when the second output power is greater than the first output power. | 02-12-2015 |
20150069984 | BUCK CONVERTER WITH OVERSHOOT PROTECTION - A buck converter includes a pulse width modulation unit, a first switch, a second switch, an inductance, and a sensor near the inductance. The pulse width modulation unit controls the first switch and the second switch power to allow or disallow electrical conduction. The sensor senses the state of the inductance in respect of a sound event, a vibration event, and a drop in current level. When the inductance is saturated and gives rise to one or more of the foregoing events, the sensor sends a signal to the pulse width modulation unit, which controls the first switch to cut off power and the second switch to allow conduction, allowing the inductance to release all its electrical energy. | 03-12-2015 |