ACBEL POLYTECH INC. Patent applications |
Patent application number | Title | Published |
20150177805 | REDUNDANT POWER SYSTEM - A redundant power system has a first power supply and a second power supply. The first power supply has a first controller with a first communication port and a first I/O port and has a normal mode, a master mode and a slave mode. An external device can send a mode setting command to the first controller through the first communication port. The first I/O port is set as an input port or an output port according to the mode executed by the first controller, wherein the output port is for indicating a power providing status of one power supply and the input port is for determining a power providing status of the other power supply. The power supplies can provide an appropriate power to a server according to the modes executed by the two controllers. | 06-25-2015 |
20150103562 | Switching Power Supply with a Resonant Converter and Method Controlling the Same - A switching power supply with a resonant converter has an AC to DC converter and a DC to DC converter. The AC to DC converter converts an inputted AC power into a DC power. The DC to DC converter has a resonant converter determining a current operating state according to waveforms of a transformer voltage and a driving signal actually measured and further controlling a switching frequency of the resonant converter to approach or to be equal to a resonant frequency for operational efficiency enhancement. Accordingly, the failure to accurately calculate a resonant frequency beforehand can be solved and the issue of accurately keeping the switching frequency consistent with the resonant frequency can be tackled. | 04-16-2015 |
20150076910 | MULTI-MODE CURRENT-ALLOCATING DEVICE - A multi-mode current-allocating device serves to control the DC to DC converter in each power supply device of a distributive power supply system. The multi-mode current-allocating device has an active current-sharing control circuit, a current-allocating bypass circuit, and a droop current sharing control circuit to be selectively operated under an active current-sharing mode, a current-allocating mode or a droop current-sharing mode according to the factors of the type of input power of each power supply device, the state of system load, and the system reliability so as to maintain the power supply efficiency of entire power supply system and reduce unnecessary power loss. | 03-19-2015 |
20150070819 | SERVER POWER SUPPLY SYSTEM - A power supply system has a housing and a front panel. The housing has multiple power supply slots disposed on a rear of the housing for mounting multiple power supplies respectively. The front panel has multiple peak portions and multiple valley portions arranged alternately to form a multi-dimensional space. Each peak portion has a first inclined wall for mounting multiple terminal holders, and has a second inclined wall for forming a heat dissipating structure. Electric power is input into the server power supply system via the terminal holder and is transformed and transmitted to the power supplies. With the terminal holders and the heat dissipating structures disposed on the peak portions of the front panel, space of the front of the housing can be utilize efficiently and heat dissipating efficiency to the server power supply system is also improved. | 03-12-2015 |
20140183956 | AC BACKUP POWER SYSTEM - An AC backup power system controls a power supply to selectively connect to a primary AC power source or a backup AC power source through a switching module. The switching module is controlled by a monitoring module. The monitoring module has a power monitoring unit, a first circuit switch, a second circuit switch, and a first processor. When the power monitoring unit detects an interruption of primary AC current, the first circuit switch that is normally closed is immediately turned off. The first processor then drives the switching module to connect to the backup AC power source. Once the backup AC power source reaches the zero-crossing point, the second circuit switch is turned on so that the backup AC power source provides power to the power supply. The power supply receives power at the zero-crossing point to avoid problems of sparks and coke deposition. | 07-03-2014 |
20140159497 | UNIVERSAL POWER SUPPLY SYSTEM - A universal power supply system allows each board mounted DC power module or each AC/DC power supply device therein having identical dimensions and appearance to further have a specification setting circuit. When the board mounted DC power module or the AC/DC power supply device is plugged in a backboard module, the specification setting terminal outputs a specification identification signal to a monitoring circuit of the backboard module. As built in with a specification mapping table, the monitoring circuit can compare the specification identification signal to find a model number corresponding to the signal, and automatically sets a critical current value or critical power value of each board mounted DC power module for over-current protection or over-power protection. Accordingly, the universal power supply system can be adapted to different board mounted DC power modules or AC/DC power supply devices without redesigning the backboard module. | 06-12-2014 |
20140112036 | POWER SUPPLY WITH OUTPUT PROTECTION AND CONTROL METHOD OF THE POWER SUPPLY - The present invention relates to a power supply with output protection and a control method of the power supply. The invention mainly provides a pre-protection value lower than a default over-current protection value. When a present output current of the power supply is higher than or equal to the pre-protection value and is lower than the over-current protection value, the method firstly determines whether the power supply has abnormal conditions. When the power supply has abnormal conditions, the method can automatically provide or stop providing a working voltage to a load. When the present output current is further higher than or equal to the over-current protection value, the method takes an over-current protection action. By multi-level monitoring of the current values, the invention properly provides an over-current protection. | 04-24-2014 |
20130188329 | TRANSFORMER WITH EXTERNALLY-MOUNTED RECTIFYING CIRCUIT BOARD - A transformer has two magnetic cores, at least one primary winding unit mounted in the magnetic cores, at least one secondary winding unit mounted in the magnetic cores and two rectifying circuit boards externally mounted beside the magnetic cores. An AC voltage output from the secondary winding unit is transmitted to and rectified by the rectifying circuit board. Therefore, the size of the transformer is compact, and heat energy generated by electronic elements mounted on the rectifying circuit board is effectively dissipated to maintain normal operation of the transformer. Further, since the transmission path from the secondary winding unit to the rectifying circuit board is short, energy loss is reasonably reduced when the transformer is operated under a high frequency situation or a larger current mode. | 07-25-2013 |
20130106370 | METHOD AND DEVICE FOR CONTROLLING SOFT START OF A POWER SUPPLY | 05-02-2013 |
20130094255 | POWER FACTOR CORRECTION CIRCUIT CAPABLE OF ESTIMATING INPUT CURRENT AND CONTROL METHOD FOR THE SAME - A power factor correction circuit and a control method thereof uses a power factor controller to generate a compensation current signal according to an input voltage of an AC-DC conversion circuit and a filter capacitor value. An estimation current signal is generated by summing up the compensation current signal and an inductor current signal of the AC-DC conversion circuit. And then, a pulse width modulation signal is outputted to the AC-DC conversion circuit according to the estimation current signal. The filter capacitor value is chosen from a capacitor value of a capacitor connected to the AC power source, an input capacitor value of the AC-DC conversion circuit, or sum of both the capacitor values. Therefore the estimation current signal approaches an input current signal of the power factor correction circuit to increase the power factor at the input terminals of the power factor correction circuit and decrease a harmonic distortion. | 04-18-2013 |
20120194137 | VOLTAGE EQUALIZER FOR BATTERY ASSEMBLY - A voltage equalizer is applied to balance voltages among multiple battery units that are connected in series as a battery assembly. The voltage equalizer has a transformer, a switch and a controller. The transformer has a primary winding connected to the battery assembly and the controller through the switch, and further has multiple secondary windings connected to the battery units respectively. When the switch is alternately turned on and off, the transformer draws energy from the battery units with the higher voltage and couples the energy to the secondary windings to charge the battery unit with the lower voltage for balancing the voltages of the battery units. | 08-02-2012 |
20120154095 | SYMMETRIC PLANAR TRANSFORMER HAVING ADJUSTABLE LEAKAGE INDUCTANCE - A symmetric planar transformer having adjustable leakage inductance has a circuit board, two first bobbins mounted respectively on opposite side surfaces of the circuit board, two primary windings mounted respectively on the first bobbins, two secondary windings disposed respectively between the circuit board and the first bobbins, two second bobbins disposed respectively between adjacent first bobbins and primary windings, two pad sets disposed respectively between adjacent first bobbins and second bobbins, and a magnetic core assembly mounted through the circuit board, the first and second bobbins, the secondary and primary windings and the pad sets. Adjusting the numbers of the at least one pad of each pad set also adjusts distances between the primary and secondary windings to allow the secondary windings to have the same leakage. Thus, a balanced electric current is induced. | 06-21-2012 |
20120120683 | FULL BRIDGE PHASE SHIFTED POWER SUPPLY WITH SYNCHRONOUS RECTIFICATION AND CURRENT DOUBLER AND METHOD FOR DYNAMICALLY ADJUSTING DELAY PARAMETERS THEREOF - A full bridge phase shifted power supply with synchronous rectification and current doubler and method for dynamically adjusting delay parameters thereof mainly have multiple delay parameter combinations respectively varying with multiple loads and embedded in a controller of the power supply. The delay parameter combinations serve to determine driving waveforms of two rectification switches of a synchronous rectification and current doubler circuit of the power supply. When the load of the power supply varies, the controller dynamically performs a corresponding delay parameter combination so as to vary the driving waveforms of the rectification switches of the synchronous rectification and current doubler circuit and enhance the operating efficiency of the power supply. | 05-17-2012 |
20110310558 | COMPACT SERVER POWER SUPPLY HAVING HIGH POWER DENSITY - The present invention discloses a compact server power supply having high power density has a casing, a main printed circuit board, a sub-printed circuit board, a power supplying circuit, a power output terminal set and a fan. The power supplying circuit has a primary side circuit unit, a transformer and a secondary side circuit unit. Electric elements of the primary and secondary side circuit units and the transformer are soldered on the main printed circuit board except parts of the electric elements of the secondary side circuit unit are soldered on the sub-printed circuit board. The sub-printed circuit board is vertically mounted and soldered on the main printed circuit board, so the length of the main printed circuit board is shortened to implement the server power supply having a compact size and high power density. | 12-22-2011 |
20110221558 | COIL OF A TRANSFORMER - A coil of a transformer has two side conducting brackets and at least one middle conducting bracket. The middle conducting bracket is elongated or spiral-shaped and has two terminals respectively connected to the side conducting brackets. The side conducting brackets and the at least one middle conducting bracket of some specific type are connected to form different numbers of loops or different types of circuits (series circuits or parallel circuits). Therefore, design and fabrication of the coil is flexible and materials and manufacturing costs are saved. Moreover, the side conducting brackets and the at least one middle conducting bracket require only two or four soldered joints so number of soldered joints required is limited and efficiency of the transformer is improved. | 09-15-2011 |
20110085354 | BURST MODE RESONANT POWER CONVERTER WITH HIGH CONVERSION EFFICIENCY - A burst mode resonant power converter with high conversion efficiency has a rectifier, a power factor correction circuit, a resonant circuit, a controller, and a burst mode triggering unit. The maximum frequency switching end of the controller is connected to a maximum frequency variable circuit. When the load is medium or heavy, the maximum frequency variable circuit increases the maximum switch frequency of the controller. When the load is in the no-load or the light conditions, it reduces the maximum switch frequency thereof. Therefore, the controller reduces the number of times that the resonant circuit switches the bridge switch circuit. The conduction cycle of the 50% pulse signal output to the bridge switch circuit becomes longer. Larger energy can be transmitted at a time to the secondary coil of the transformer. This increases the overall efficiency. | 04-14-2011 |
20100276552 | CABLE CLIP - A cable clip has a body and a fastener. The body has two supporting arms and a connecting arm. Each supporting arm has two ends. The connecting arm is formed between corresponding ends of the supporting arms. The fastener is mounted pivotally on the connecting arm of the body and has a through hole and multiple side surfaces. Distances from the through hole to the side surfaces of the fastener are different. Then, rotating the fastener adjusts the side surfaces abutting a plug to different plugs in different sizes. | 11-04-2010 |
20100253465 | Compact electromagnetic component and multilayer winding thereof - An electromagnetic component has a multilayer winding. The multilayer winding has a stack body. The stack body has multiple sub-stacks and at least one second metal ring, each of which is interposed between two adjacent sub-stacks of the stack body. Each sub-stack has identical upper and lower first metal rings. Further, each second metal ring has identical upper and lower half rings. Therefore, the multilayer winding only uses two forms of the metal rings, so manufacturing costs will be decreased. | 10-07-2010 |
20100231185 | POWER SUPPLY DEVICE AND POWER CONVERSION ASSEMBLY THEREOF - A power conversion assembly includes a conversion box, a conversion lead and a plurality of adapter plugs. The conversion box has a power regulation circuit, a variable switch, a power input port, a power output port and at least a interface port. The variable switch, the power input port, the power output port and the at least one interface port are connected with the power regulation circuit. When the conversion box is connected with the power adapter to obtain a DC power, a DC power with a different voltage can be sent out by the switching of the variable switch and the regulation of the power regulation circuit. One end of the conversion lead is used to receive the regulated DC power from the conversion box. The other end of the conversion lead can be replaced with the adapter plug having different specification to supply power to different power-requiring equipment. | 09-16-2010 |
20100212877 | AIRFLOW GUIDING AND HEAT DISSIPATING ASSEMBLY FOR ELECTRONIC DEVICE - An airflow guiding and heat dissipating assembly is mounted in an electronic device and has a base and at least one baffle being mounted on the base. Multiple electronic components are mounted on the base and are arranged in a line. Airflow flows along one electronic component upstream, past the baffle and then over the other electronic component downstream to take away heat from the electronic component. The baffle prevents the airflow from becoming turbulent and, therefore, temperatures of the electronic component are lowered efficiently. | 08-26-2010 |
20100212864 | PACKAGED HEAT DISSIPATING ASSEMBLY FOR AN INTERMEDIATE BUS CONVERTER - A packaged heat dissipating assembly for an intermediate bus converter (IBC) has a frame being mounted on and around the IBC and a heat sink being mounted on the frame. The packaged heat dissipating assembly is easily detached from the IBC. Therefore, a broken bus converter module (BCM) or heat sink is easily replaced separately. Consequently, heat dissipating designs and maintenance of a server or communication equipment is facilitated and maintenance costs of the IBC and the server or communication equipment are lowered. | 08-26-2010 |
20100165668 | HIGH EFFICIENCY UNIVERSAL INPUT SWITCHING POWER SUPPLY - A universal input switching power supply has the rectifier, a signal detecting unit detecting a voltage of an external AC power and outputting a detecting signal, a PFC circuit converts a first DC power from the rectifier to a second DC power with different voltage according to the detecting signal; and a parallel and serial type DC to DC converter converting the second DC power with different voltage to a constant voltage of the third DC power. The parallel and serial type DC to DC converter has a transformer having a primary and secondary coils and physically changes a turn ratio of the primary and secondary coils of a transformer thereof according to a voltage ratio of the second DC power and the third DC power. Accordingly, the universal input switching power supply has good transforming efficiency at different AC power source conditions. | 07-01-2010 |
20100109591 | Heat dissipation device and fan module thereof - A heat dissipation device has a main controller and a fan module having a motor coil, a connection interface, a PWM driving circuit and a fan monitor chip. The connection interface has a control pin, an error report pin, a power supply pin and a ground pin. The control pin receiving a control signal. The PWM driving circuit adjusts current magnitude and current direction of the motor coil to drive the fan module. The fan monitor chip is connected to the connection interface and the PWM driving circuit, receives the control signal, generates and sends PWM signals to the PWM driving circuit according to the control signal and sends an acknowledgement signal via the control pin after receiving the control signal. The main controller can check if the control signal is correctly received based on the acknowledge signal. | 05-06-2010 |
20100014330 | AC TO DC POWER CONVERTER WITH HOLD-UP TIME FUNCTION - An AC to DC power converter with hold up time function has a charging switch and a mode switch. The charging switch is connected between an output capacitor of a PFC controlling circuit and an energy-storage capacitor. The mode switch is connected between the energy-storage capacitor and an input of the PFC controlling circuit. The charging and mode switches are controlled by a PFC controller. When AC power is normal, the charging switch turns on and mode switch turns off. Meanwhile, the energy-storage capacitor and the output capacitor are connected in parallel to store energy in the energy-storage capacitor. When the AC power source is interrupted, the charging switch turns off and mode switch turns on. Therefore, the energy-storage capacitor is disconnected from the output capacitor. The PFC circuit obtains power from the energy-storage capacitor and continuous to supply an output voltage for a while. | 01-21-2010 |
20090315409 | SAFETY SOCKET - A digital automatic monitoring and power breaking safety socket has a shell in which an electrical connection base is mounted for connecting to a power line and an external line plug inside. A power switch is connected in series between the electrical connection base and the power line. A digital power monitoring circuit is coupled to the power line detect the power status to control the power switch based on the power status. Further, a power line data communication circuit is mounted in the shell and connects to the digital power monitoring circuit to obtain and process the power status. The processed power status is loaded into the power line that connects to the electrical connection base. Therefore, in addition to automatic power breaking and supplying, a remote power management host is able to obtain the power status and remotely control the socket. | 12-24-2009 |
20090290383 | RESONANT CIRCUIT AND RESONANT POWER CONVERTER WITH A NARROW OPERATING FREQUENCY BANDWIDTH - A resonant circuit has two parallel resonant branches and one assistant inductor connecting the two resonant branches. Each resonant branch has a series capacitor and a series inductor connected in series. The other end of the series inductor is for connecting to a primary side of a transformer unit. The resonant circuit can provide two characteristic resonant frequencies fr and fm, so that a resonant power converter using the resonant circuit has an operating frequency fs that satisfies fs>fr or fm11-26-2009 | |
20090272514 | POWER SUPPLY AND HEAT-DISSIPATING METHOD OF THE POWER SUPPLY - A power supply is mounted in a case for a computer and has a shell, a blower assembly and multiple electrical components. The shell has a rear surface, a heat sink chamber, an electrical component chamber, an air inlet and an air outlet. The chambers have front end communicating with each other. The air inlet and the air outlet are formed through the rear surface of the shell. The blower assembly is mounted in the shell and is adjacent to the rear surface of the shell. The electrical components are mounted in the electrical component chamber and generate heat when the computer operates. The heat-dissipating method of the power supply is to extract air from outside the computer case into the shell to dissipate the heat generated by the electrical components. Using air at room temperature from outside the case is much more efficient to cool down the power supply. | 11-05-2009 |
20090244847 | MOUNTING DEVICE FOR CHIPS - A mounting device for chips has a heat sink and at least one clamp. The heat sink has at least one conductive side, two ends, multiple chip units and two connecting bases. The chip units are arranged on the at least one conductive side. The connecting bases are formed on the ends of the heat sink. The at least one clamp is mounted across the at least one conductive side of the heat sink and has two ends, a middle sheet, multiple pressing tabs and two connecting arms. The pressing tabs extend from the middle sheet to press the chip units against the conductive side of the heat sink. The connecting arms are formed respectively on the ends of the clamp and are mounted respectively on the connecting bases. | 10-01-2009 |
20090154594 | POWER LINE COMMUNICATION DEVICE WITH DC POWER OUTPUT AND NETWORK SIGNAL TRANSMISSION ABILITIES - A power line communication device having DC power output and network signal transmission abilities has a casing, a power cable connector, a network signal converting circuit and a first connecting interface. The network signal converting circuit is connected to the power cable connector, sends and receives network signals over a power cable connected to the power cable connector and transforms an AC power source to a DC power source. The first connecting interface is connected to the network signal converting circuit for connecting to and exchanging the network signals with an external network device and has a network port and a DC power output port. The DC power output port outputs the DC power source from the network signal converting circuit to the external network device. Therefore, the first connecting interface is capable of outputting the DC power source and transmitting the network signals. | 06-18-2009 |
20090134921 | SLOPE COMPENSATION METHOD AND CIRCUIT FOR A PEAK CURRENT CONTROL MODE POWER CONVERTER CIRCUIT - A slope compensation method and circuit for a peak current control mode power converter circuit is provided. Since the power converter circuit has a synchronous signal of a driven signal of enabling the first primary switch and the second primary switch, a triangular wave signal is generated. The driven signals of the first and second primary switches determine the ramp up time of the triangular wave signal. The triangular wave signal is added to one of the output DC voltage feedback signal of the corresponding power converter circuit that are used to compare with a current peak value of the voltage feedback signals. Therefore, a high level triangular wave DC voltage feedback signal that is higher than the DC voltage feedback signal is formed, and the switching noises do not effect comparing result of a PWM controller of the power converter circuit. | 05-28-2009 |
20090097286 | Power supply having an extending hold-up time controlling unit - A hold-up time extension controlling device for a power supply, that has a power factor correction circuit, a hold-up time extension circuit, a hold-up time controlling circuit, a storage capacitor and a DC to DC converter. The hold-up time extension controlling device has a switch and an auxiliary capacitor. When an AC power source is normal, the switch is controlled to turn on according to the power factor correction circuit to make the auxiliary capacitor connecting to the storage capacitor in parallel to averagely have a ripple current. When the AC power source is interrupted, the switch is controlled to turn off. At the time, the hold-up time extension circuit obtains a storage power of the auxiliary capacitor and then output to the DC to DC converter to keep the voltage of the storage capacitor at a preset voltage for a long time. | 04-16-2009 |
20090045897 | TRANSFORMER AND TRANSFORMER ASSEMBLY - The transformer has a bobbin, a coil assembly and a magnetic core assembly. The bobbin is mounted in the magnetic core assembly and has multiple connecting pins being formed on at least one side of a bottom surface of the bobbin. Each connecting pin has a top surface as a soldering surface that corresponds to a solder pad on a back of a circuit board. At least one fastener is further formed on the bottom surface of the circuit board. Therefore, when the transformer is mounted through the circuit board, the connecting pins are soldered on the back of the circuit board to reduce the total thickness of the combination of the transformer and the circuit board. | 02-19-2009 |