| Patent application number | Description | Published |
|---|
| 20100315749 | SYSTEM FOR TESTING POWER SUPPLY UNIT - A system for testing a power supply unit includes a test sub-system and a test control sub-system connected to the test sub-system and the power supply unit. The test sub-system perform tests and record the results. The test control sub-system is capable of selecting test items to test the power supply unit and setting an execution sequence of the test items. The test items includes a standby test item for testing the power supply unit at a standby state, a normal test item for testing the power supply unit at a normal state, and an over temperature protection test item for testing the power supply unit at an over heated state. The test control sub-system is further capable of automatically switching the standby test item to the normal test item, and switching the normal test item to the over temperature protection test item. | 12-16-2010 |
| 20100320998 | SYSTEM FOR TESTING POWER SUPPLY PERFORMANCE - A system for testing power supply performance includes a DC power supply, a test apparatus for testing the DC power supply, and a control circuit electrically coupled to the DC power supply and the test apparatus. The control circuit includes an A/D conversion circuit, and a voltage level conversion circuit. The A/D conversion circuit receives DC voltage signals from the power supply, and converts the received DC voltage signals to digital signals. The voltage level conversion circuit receives the digital signals, and converts the received digital signals to voltage level signals which can be identified by the test apparatus. The test apparatus receives the voltage level signals, and generates signal waveforms of the voltage signals according to the received voltage level signals. | 12-23-2010 |
| 20100327901 | POWER SUPPLY TESTING SYSTEM - A testing system for testing a conversion efficiency of a power supply unit (PSU) includes a power meter, a plurality of switches, a multimeter, a microcontroller unit, and a data processing device. The power meter is utilized to measure an input power supplied to the power supply unit. The multimeter is utilized to measure an output power of PSU. The microcontroller unit is configured for automatically switching the plurality of switches for enabling the multimeter to measure the output power of power supply. The data processing device is utilized to read data measured from the power meter and the multimeter and calculate a conversion efficiency of the PSU. | 12-30-2010 |
| 20110001443 | SYSTEM FOR MEASURING FAN ROTATIONAL SPEED - A system is used to measure a fan rotational speed. The system includes a main controller, a first socket coupled to the linear fan, a second socket connected to the main controller, and an optical fiber amplifier connected to the main controller. A PWM (pulse width module) fan is coupled to the second socket, the PWM fan sends a first rotational speed signal, which represent a rotation speed of the PWM fan, to the main controller via the second socket. The optical fiber amplifier is capable of radiating light on fan blades of the linear fan, and sensing light reflected by the fan blades to count a rotational speed of the linear fan, and generating a second rotational speed signal which represents a rotational speed of the linear fan. The optical fiber amplifier sends the second rotational speed signal to the main controller. | 01-06-2011 |
| 20110121855 | SYSTEM FOR TESTING POWER SUPPLY PERFORMANCE - A system for testing a DC power supply performance includes a test apparatus for testing the DC power supply, and a control circuit electrically coupled to the DC power supply and test apparatus. The control circuit includes a microcontroller, a switch control circuit, and a switch circuit controlled by the switch control circuit. The microcontroller is configured for outputting control signals. The switch control circuit is configured for receiving the control signals, and is powered on according to the corresponding control signals. The switch circuit is capable of turning on when the switch control circuit is powered on. The DC power supply output terminals are coupled electrically to the test apparatus via the switch circuit. The test apparatus is configured for reading voltage values at the DC power supply corresponding output terminals, and outputting a feedback signal to the microcontroller when the testing is complete. | 05-26-2011 |
| 20110140725 | OVER CURRENT PROTECTION TEST SYSTEM - A system includes a switching power supply, an electric load connected to the switching power supply, a voltage regulation circuit, and a detect device. The voltage regulation circuit is connected to the electric load and configured to output a Pulse Width Modulation (PWM) signal to regulate a voltage supplied to the electric load. The detect device is connected to the switching power supply for detecting whether the switching power supply is powered off when a current flowing to the electric load exceeds a preset tolerance value. | 06-16-2011 |
| 20110140732 | CIRCUIT FOR TESTING INRUSH CURRENT - A circuit is configured for testing an inrush current of a power supply. The circuit includes a capacitor module, a voltage meter, a semiconductor switch, and a current meter. The capacitor module is connected to an power source for storing electric charge. The voltage meter is connected to the capacitor module for measuring a voltage across the capacitor module. The semiconductor switch is capable of connecting the capacitor module to the power supply and being closed when the voltage across the capacitor module reaches a predetermined value. The current meter is capable of measuring the inrush current at the time the power supply is powered on. | 06-16-2011 |
| 20110155700 | WELD CURRENT GENERATING APPARATUS - A weld current generating apparatus includes a voltage conversion circuit, a control circuit, a switch circuit, and a current output circuit. The voltage conversion circuit receives an AC voltage from an AC voltage input terminal, and converts the AC voltage to a DC voltage. The control circuit receives the DC voltage, wherein the control circuit is capable of setting a weld time, and outputting a control signal for controlling the weld time. The switch circuit receives the control signal, and turns on for the weld time according to the control signal. The current output circuit outputs a continuous weld current when the switch circuit turns on. | 06-30-2011 |
| 20110156743 | SYSTEM FOR TESTING POWER SUPPLY PERFORMANCE - A system for testing a DC power supply performance includes a load module electrically coupled to the DC power supply, a switch module electrically coupled to the DC power supply, a control module electrically coupled to the load module and the switch module respectively, and an indication module electrically coupled to the control module. The control module includes a judge module and a comparison module. The judge module is configured for receiving DC voltage signals from the DC power supply; wherein the judge module is capable of turning on when the DC power supply is normal. The comparison module is configured for comparing the DC voltage signals with a reference voltage; wherein the comparison module is capable of outputting a control signal when the DC voltage signals are greater than the reference voltage. The indication module is configured for receiving the control signal and indicating status of the DC power supply. | 06-30-2011 |
| 20110156744 | LINEAR VOLTAGE GENERATING DEVICE FOR TESTING PERFORMANCE OF POWER SUPPLIES - A linear voltage generating device for testing performance of a power supply includes a filter circuit, an analog to digital (A/D) conversion circuit, and an amplifier circuit. The filter circuit is configured for receiving a pulse width modulation (PWM) signal, and comparing the PWM signal with a reference voltage to output a filtered PWM signal. The A/D conversion circuit is configured for receiving the filtered PWM signal, and converting the filtered PWM signal to a linear digital signal. The amplifier circuit is configured for receiving the linear digital signal, and outputting an amplified linear digital signal to an electric load electrically coupled to the power supply. | 06-30-2011 |
| 20110163776 | POWER SUPPLY TESTING SYSTEM - A system for testing a conversion efficiency of a power supply unit includes a power meter, a plurality of switches, a multimeter, a microcontroller unit (MCU), a computer, and a signal conversion circuit for communicatively connecting the MCU to the computer. The power meter is capable of measuring an input power supplied to the power supply unit. The switches are powered on/off according to a sequence predetermined by the computer. The multimeter is configured to measure an output power of the power supply. The computer is capable of reading data measured from the power meter and the multimeter and calculating a conversion efficiency of the power supply unit. | 07-07-2011 |
