Patent application number | Description | Published |
20120262148 | VOLTAGE MEASUREMENT APPARATUS - A voltage measurement apparatus includes a power interface, first and second voltage detecting modules, first and second driving modules, and first and second indication modules. The first voltage detecting module compares an output voltage with a first reference voltage, to determine whether the output voltage is greater than the first reference voltage. The second voltage detecting module compares the output voltage with a second reference voltage, to determine whether the output voltage is less than the second reference voltage. The first indication module indicates the output voltage when the output voltage is greater than the upper limit voltage or less than the lower limit voltage. The second indication module indicates the output voltage when the output voltage is less than or equal to the upper limit voltage and greater than or equal to the lower limit voltage. | 10-18-2012 |
20120268887 | FLASH DRIVE - A flash drive includes a main body and a casing pivotably installed to a first end of the main body. A universal serial bus (USB) connector extends from a second end of the main body. The casing includes two plates and an end piece perpendicularly connected between ends of the plates. The casing is pivoted toward the USB connector to enclose the USB connector. | 10-25-2012 |
20120304018 | APPARATUS FOR TESTING BASIC INPUT OUTPUT SYSTEM CHIP - An apparatus for testing a basic input output system (BIOS) chip includes a base and a connector. The base defines a receiving space for housing the BIOS chip. A number of signal pins are formed on sidewalls bounding the receiving space, to electrically connect the BIOS chip. The connector extends from a bottom of the base, and is electrically connected to the signal pins of the base to be connected to a diagnose card to debug the BIOS chip. | 11-29-2012 |
20120306435 | CHARGING CIRCUIT WITH UNIVERSAL SERIAL BUS PORT - A charging circuit includes a switch, a standby power supply, a first power supply, a second power supply, a universal serial bus (USB) port, and a power supply switching module with a first to a fourth terminals. According to the power states of a computer, the power supply switching module allows either a first power supply or a second standby power supply to provide a charging voltage for the USB port through controlling the switch. | 12-06-2012 |
20120319663 | LOAD-TESTING CIRCUIT FOR USB PORTS - A power supply circuit is configured for simulating the maximum standard load currents for different kinds of USB ports, and each of the USB ports includes a power terminal; the load-testing circuit includes a voltage regulating circuit, a voltage dividing circuit, a first operational amplifier, a first transistor, and a current limiting resistor. The voltage regulating circuit is configured for supplying a reference voltage to the voltage dividing circuit. The reference voltage is divided by sub-circuits of the voltage dividing circuit. When the sub-circuit connected to the voltage regulating circuit and the first operational amplifier is changed, a current flows from the first transistor and the current limiting resistor is changed. | 12-20-2012 |
20120319668 | POWER SUPPLY CIRCUIT WITH PROTECTION CIRCUIT - A power supply circuit includes a pulse width modulation (PWM) controller, a plurality of phase circuits connected to the PWM controller, and a protection circuit connected to the PWM controller and each of the phase circuits. The PWM controller controls all of the phase circuits alternately outputting power supply voltages according to a predetermined sequence, and the protection circuit operates to detect whether the phase circuits work normally. When any one of the phase circuits does not work normally, the protection circuit turns off the PWM controller and all of the phase circuits. | 12-20-2012 |
20120319720 | TEST CIRCUIT FOR BIPOLAR JUNCTION TRANSISTOR - A test circuit includes a first test circuit. The first test circuit includes a first light-emitting diode (LED) and a first resistor. An anode of the first LED is connected to a power supply. A cathode of the first LED is connected to a collector of a bipolar junction transistor (BJT) through the first resistor. An emitter of the BJT is grounded. A base of the BJT is connected to the power supply. A type of the BJT can be determined according to status of the first LED. | 12-20-2012 |
20120329427 | WIRELESS UNLOCKING SYSTEM - A wireless unlocking system includes a programmable telephone. When the programmable telephone receives a call from a communication terminal along with a calling telephone number, the calling telephone number is matched with a number of pre-stored telephone numbers. The programmable telephone transmits an unlocking signal to an electrically controlled lock and unlocks a door if the telephone number of the call successfully matches one of the pre-stored telephone numbers. | 12-27-2012 |
20130009474 | FAST-DISCHARGING CIRCUIT - A fast-discharge circuit includes at least one power supply group, a switch circuit, and a power connector. Each power supply group includes a power supply unit, stabilizing capacitances, a diode, and a resistance. The power supply unit includes a positive output and a negative output. Anodes of the stabilizing capacitances and the diode are connected to the positive output of the power supply unit. Cathodes of the stabilizing capacitances are connected to the negative output. A cathode of the diode is also connected to the negative output through the resistance. The switch circuit includes a NMOS transistor. A drain of the NMOS transistor is electrically connected to the negative outputs of each power supply; a source of the NMOS transistor is grounded. The power connector includes a PS-ON pin electrically connected to a gate of the NMOS transistor. | 01-10-2013 |
20130017707 | CONNECTOR ASSEMBLYAANM PAN; JIAN-CHUNAACI Shenzhen CityAACO CNAAGP PAN; JIAN-CHUN Shenzhen City CNAANM ZHOU; HAI-QINGAACI Shenzhen CityAACO CNAAGP ZHOU; HAI-QING Shenzhen City CNAANM TU; YI-XINAACI Shenzhen CityAACO CNAAGP TU; YI-XIN Shenzhen City CN - A connector assembly includes a first connector and a second connector. The first connector includes a main body, and a latching member extending out from the main body. The latching member includes a resilient extending portion extending from an outer surface of the main body, and a latching protrusion extending out from the extending portion. The second connector to be connected to the first connector, and includes a base, and a connecting member extending out from an outer surface of the base. The connecting member defining sliding groove and a receiving portion communicating with the sliding groove for latching the latching protrusion. Wherein when the first and second connectors are being connected, the latching member slides through the sliding groove, such that the latching protrusion is latched in the receiving portion. | 01-17-2013 |
20130025945 | SERVER CONTAINER WITH PAYLOAD DETECTING FUNCTION - A server container includes a main body, at least one support plate, at least one angle detecting module, and an alarm module. The main body includes two opposite sidewalls. Two opposite edges of each support plate is interconnected the two sidewalls. Each angle detecting module includes an angle sensor and a controlling module. The angle sensor is correspondingly positioned on one support plate and for detecting a bending angle of the support plate and generating an angle signal corresponding to the bending angle. The controlling module is configured for comparing the voltage of the angle signal with a reference voltage which corresponds to a predetermined degree and generating a control signal upon a condition that the voltage of the angle signal is greater than the reference voltage. The alarm module is configured for generating an alarm upon a condition of receiving the control signal. | 01-31-2013 |
20130027304 | COMPUTER MOUSE HAVING ILLUMINATING FUNCTION - A mouse includes a casing, a light, a switch, and a supporting device. The casing includes a base plate and a top cover covering the base plate. The top cover defines a receiving hole. The switch is electrically connected to the light and used to turn the light on and off. The supporting device is movably accommodated in the receiving hole and supports the light. The supporting device is capable of moving out of the receiving hole. | 01-31-2013 |
20130029506 | SOCKET PROTECTION DEVICE AND CIRCUIT BOARD ASSEMBLY - A socket protection device includes a fixing member, a cover, a limiting member, and an operation member. The fixing member is secured to a circuit board. The fixing member includes a pair of first connecting blocks. The cover includes a second connecting block, a first latching portion, and a second latching portion. The limiting member is secured to the circuit board. The operation member includes a shaft and an operation rod secured to the shaft. The shaft rotatably connects the cover to the fixing member via the first and second connecting blocks. When the operation rod is pressed to drive the shaft to rotate, the cover is rotated toward the socket. When the cover covers the socket, the first latching portion latches the limiting member, and the second latching portion latches the operation rod. | 01-31-2013 |
20130030729 | MOTHERBOARD ALARM SYSTEM TEST CIRCUIT - A motherboard alarm system test circuit includes an infrared emitter, a memory, and a circuit board. The circuit board includes a memory slot, many edge connectors, an infrared receiver, a single chip computer, and a switch circuit. The memory slot includes many spaced metal sheets. One end of each metal sheet is electrically connected to one of the first golden fingers of the memory. Each edge connector is electrically connected to the other end of each metal sheet. The second golden fingers of the circuit board are electrically connected to the memory slot. The signal chip computer includes an input pin electrically connected to the infrared receiver. The switch circuit is electrically connected to the signal chip computer. The switch circuit controls an electrical connection between the plurality of metal sheets and the plurality of first golden fingers of the memory. | 01-31-2013 |
20130038343 | TEST CIRCUIT FOR TESTING SHORT-CIRCUIT - A test circuit includes two probes, a comparison circuit, a switch circuit, and an indication circuit. The probes are connected to an electronic component to be tested, and a low level signal is output if the electronic component is short-circuited. The comparison circuit outputs a comparison signal based on the shorting signal from the probes. The switch circuit outputs a switch signal based on the comparison signal from the comparison circuit. The indication circuit indicates that the electronic component is short-circuited or not short-circuited based on the switch signal fro m the switch circuit. | 02-14-2013 |
20130038447 | ELECTRONIC LOCKING ASSEMBLY - An electronic locking assembly includes an electronic lock and an electronic key for unlocking the electronic lock. The electronic key includes a first memory for storing a first password, and a first signal transceiver for encoding the first password into a first wireless signal and transmitting the first wireless signal. The electronic lock includes a main body for physically locking or unlocking the device, a second memory for storing a second password, a second signal transceiver, a processor, and a comparator. The second signal transceiver receives the first wireless signal and decodes the first wireless signal into the first password. The processor sends the first password and the second password to the comparator. The comparator compares whether the first password second password match, and thus to control the main body to physically lock or unlock the device. | 02-14-2013 |
20130043892 | RESISTANCE MEASUREMENT CIRCUIT - A resistance measuring circuit for measuring a resistor includes an amplifier, a transistor, a variable resistor, a first resistor, and a second resistor. The transistor includes a base connected to the output of the amplifier, a collector connected to a direct current (DC) power supply, and an emitter. The first resistor includes a first terminal connected to the DC power source, and a second terminal grounded through the variable resistor and connected to the non-inverting terminal of the amplifier. The second resistor includes a first terminal connected to the inverting terminal of the amplifier and connected to the emitter of the transistor through the resistor to be measured, and a second terminal grounded. | 02-21-2013 |
20130043896 | TEST DEVICE FOR PRINTED CIRCUIT BOARD - A test device for testing a printed circuit board (PCB) includes a base and a measuring device. The measuring device includes a testing pin and is capable of measuring any desired point of the PCB on condition that the pin makes contact with the point at an included angle between the pin and a back surface of the PCB which is larger than a predetermined angle. The distance between the base and the PCB satisfies: H>L tan θ, where H is the vertical distance between the PCB and the base, L is the maximum length of an orthogonal projection of the pin on the PCB when the pin is contacting the point, and θ is the predetermined angle. | 02-21-2013 |
20130045108 | FAN MODULE - A fan module includes a fan, a bracket, a number of first fasteners, and a number of second fasteners. The bracket includes a base wall defining a number of locking holes. The fan includes a side plate defining a number of mounting holes. Each of the first fasteners includes a pole, a head portion, and a locking portion. A through hole is defined in the first fastener. A block protrudes on an inner surface of the through hole of the first fastener, aligning with the locking portion. Each of the second fasteners includes a shaft. The pole extends through the locking hole and the mounting hole of the fan. The shaft extends through the through hole of the first fastener to engage with the block, to deform the locking portion. Therefore the locking portion is locked to an inner surface of the side plate of the fan. | 02-21-2013 |
20130054163 | POWER MEASURING SYSTEM - A power measuring system for measuring a turning-on power, a turning-off power, and a turned-on power of a first field-effect transistor includes a pulse driver, a first resistor, a processing unit, and an indication unit. The pulse driver generates square wave signals. The processing unit samples voltages at the source and the drain of the first field-effect transistor, and at the first and second terminals of the first resistor at the moment when the square wave signals changes from low to high or from high to low, and calculates the turning-on power, the turning-off power, and the turned-on power of the first field-effect transistor. The indication unit displays the turning-on power, the turning-off power, and the turned-on power of the first field-effect transistor. | 02-28-2013 |
20130057064 | POWER SUPPLY SYSTEM FOR AIR CONDITIONER OF CAR - A power supply system for an air conditioner of a car includes a battery, an alternator, a detection circuit to detect whether the alternator is operating and outputting a detection signal according to the detection result, a processing unit to output a control signal according to the detection signal, and a switching circuit to connect either the battery or the alternator to the air conditioner. | 03-07-2013 |
20130057324 | CIRCUIT FOR CLEARING COMPLEMENTARY METAL OXIDE SEMICONDUCTOR INFORMATION - A circuit for clearing complementary metal oxide semiconductor (CMOS) information of a CMOS chip includes a battery, first to fifth resistors, first and second electronic switches, a switching unit, and first and second diodes. The circuit can clear information of the CMOS chip when one or more switches are activated. | 03-07-2013 |
20130059464 | AUDIO TEST CABLE - An audio test cable includes three types of audio input and output (I/O) ports. The input port and the output port in each type of audio I/O ports form a short circuit for carrying a loopback test for a motherboard. The audio test cable also includes a test audio jack which connects to the output port of all types of audio I/O ports for carrying out an audio-quality test for the motherboard. | 03-07-2013 |
20130069633 | FAN SPEED DETECTION DEVICE - A fan speed detection circuit includes a counter, an integrating circuit, a current regulation circuit, a connector and a matching circuit. The connector electrically connects to the current regulation circuit and a fan. The counter outputs a pulse signal, the integrating circuit receives the pulse signal from the counter, and converts the pulse signal from the counter into a corresponding analog command signal. The current regulation circuit adjusts the current from the integrating circuit according to the command signal and outputs the adjusted current to the connector. The matching circuit converts the voltage from the connector and provides a suitable voltage for activating the counter to enable the counter to detect and quantify and record the rotation speed of the fan in all circumstances. | 03-21-2013 |
20130088472 | VISUAL DISPLAY CONNECTION CIRCUIT - A connection circuit for a digital visual interface (DVI) includes a platform controller hub (PCH), a DVI, a plurality of voltage dividing resistors, and a switch. The platform controller hub (PCH) includes a plurality of output contacts outputting a plurality of analog signals. The DVI includes a plurality of input contacts, and each input contact is connected to one of the output contacts to transmit the analog signals. The switch has one end connected to the output contacts, and another end grounded. The switch switches on when a power supply is applied to the switch and is switched off when the power supply is not applied to the switch. | 04-11-2013 |
20130128404 | OVERVOLTAGE PROTECTION CIRCUIT - A protection circuit that protects a load charged by a power supply. The protection circuit includes a reference voltage set circuit, a sampling circuit, a switch, and a comparator. The reference voltage set circuit provides a reference voltage. The sampling circuit is electrically connected to the power supply and provides a sampling voltage based on a charge voltage output from the power supply to the load. The switch is electrically connected between the power supply and the load. The comparator includes a non-inverting input terminal electrically connected to the reference voltage set circuit, an inverting input terminal electrically connected to the sampling circuit, and an output terminal electrically connected to the switch. The comparator compares the sampling voltage with the reference voltage, and controls the switch to turn on or off according to the comparison. | 05-23-2013 |
20130141021 | MOTOR CONTROL CIRCUIT AND KEYBOARD ASSEMBLY HAVING SAME - An exemplary motor control circuit for controlling a motor includes a motor driving chip, a sensing unit, and a controller. The motor driving chip motor driving chip is electronically connected to the motor. The sensing unit includes a proximity sensor, the proximity sensor detects whether an external object is proximate to the proximity sensor. The controller is electronically connected to the motor driving chip and the sensing unit, the controller controls the motor driving chip to drive the motor to rotate in a first direction when an external object is detected, and controls the motor driving chip to drive the motor to rotate in a second direction reverse to the first direction when no external object is detected for a predetermined period of time. | 06-06-2013 |
20130147632 | INDICATOR LIGHT CONTROL CIRCUIT - An indicator light control circuit for controlling a single indicator light to indicate a high or low link speed of a network connection includes a pulse signal generating circuit, a bias circuit having a digital potentiometer, and a controller. The pulse signal generating circuit generates a pulse signal. The digital potentiometer is electronically connected to the pulse signal generating circuit and the controller. The controller adjusts the effective resistance of the digital potentiometer connected to the pulse signal generating circuit according to different link speeds being experienced in the network connection, to adjust a duty cycle of the pulse signal, thereby changing the on-time and off-time of the indicator light. | 06-13-2013 |
20130148247 | OVERVOLTAGE PROTECTION CIRCUIT - An overvoltage protection circuit includes a power device for outputting a plurality of first powers, a plurality of VRMs for respectively receiving the plurality of first powers, a plurality of voltage dividing circuits, a reference power supply for outputting a reference voltage, and a comparison circuit having a comparator. Each VRM converts a corresponding first power to a regulated second power. The plurality of voltage dividing circuits respectively divides voltages of the second powers, each voltage dividing circuit outputs a divided voltage. The comparator compares a combination of the divided voltages with the reference voltage, and when an overvoltage occurs in at least one of the second powers, the comparator outputs a control signal via the output terminal to the power device to control the power device to shut down all of the first powers. | 06-13-2013 |
20130166937 | UNIVERSAL SERIAL BUS HUB - A Universal Serial Bus (USB) hub includes a USB input, a number of USB outputs, a USB controller, a power processing module, and an alarm. The USB controller controls data transmission between a connected USB device connected to the USB output and a computer. The power processing module obtains a power of each USB output and sums the power of all the USB outputs. The power processing module further compares a preset power value with the sum of the power. When the sum of the power is greater than the preset power value, the power processing module outputs a control signal to activate the alarm. | 06-27-2013 |
20130238937 | DISPLAY DEVICE AND COMPUTER USING THE SAME - A display device is coupled to a computer, and the computer accommodates a motherboard. The display device includes an interface unit connected to the motherboard, a display panel, and a processor electrically coupled to the interface unit. The processor is used to: receive a power-on self test (POST) code from the motherboard via the interface unit, convert the POST code into a debug code, and control the display panel to display the debug code. | 09-12-2013 |
20130260726 | QUEUE REMINDER SYSTEM AND QUEUE REMINDER METHOD - A queue reminder method applied in a computing device computes a predicted waiting time interval of each uncalled number. The method generates a message when the predicted waiting time interval of an uncalled number is less than a preset time interval, and sends the message to a communication account associated with the uncalled number. | 10-03-2013 |
20130283099 | SYSTEM AND METHOD FOR TESING STABILITY OF SERVER - A method for testing stability of a server includes the following steps. Providing a first user input interface for a user to input test parameters. Generating a control signal according to the input test parameters and transmitting the control signal to the BMC of the server. Controlling the server to start and shut down via the BMC. Detecting whether the tested characteristics are within specified ranges during each start and shutting down operation. Generating a SEL if any abnormal result is obtained and records a test time when the abnormal result is obtained in the SEL. Storing the generated SEL in a storage unit. Providing a second user input interface on the display for the user to input conditions to filter test results. And responding to the input conditions and outputting corresponding test results to the display. | 10-24-2013 |
20130315728 | FIXING DEVICE FOR FAN - A fixing device includes a support fixed in a chassis, and a bracket installing a fan. The support includes a mounting plate. The mounting plate defines a vent area and a number of latching holes located around the vent area. The bracket includes a number of pins respectively latched into the latching holes of the support and a positioning portion. A tab protrudes from the support, to engage with the positioning portion of the bracket. An elastic portion extends down from the bracket to resiliently abut against the chassis. | 11-28-2013 |