Patent application number | Description | Published |
20120262195 | RESISTANCE DETERMINING SYSTEM AND METHOD - A resistance determining system is used to determine an offsetting resistance of a mainboard to establish a predetermined offset voltage. The system includes an input equipment, a single-chip, and a resistor. The input equipment sets a predetermined standard voltage of the mainboard. The resistor supplies the mainboard with various resistances, to adjust real output voltage of the mainboard. The single-chip monitors the real output voltage of the mainboard, and adjusts the resistance of the resistor until the difference between the real output voltage and the predetermined standard voltage is equal to a predetermined offset voltage. | 10-18-2012 |
20120267954 | LOAD LINE CALIBRATION DEVICE - An adjusting device adjusts a load line of a CPU power supply circuit. The adjusting device includes a controller, a DC electronic load device, a voltage follower, an adjustable resistor, and an indicator. The controller controls the DC electronic load device to change an output current of the circuit. The voltage follower sends an output voltage of the circuit to the controller. The controller calculates the load line of the circuit based on the output current and the output voltage of the circuit, determines whether the load line satisfies the required value, changes a resistance of the adjustable resistor until the load line satisfies the required value, and sends a resistance of the adjustable resistor to the indicator. | 10-25-2012 |
20120299582 | INPUT POWER MEASURING DEVICE - An input power measuring device includes a board with an edge connector, a first dual inline memory modules (DIMM) socket, a resistor, a differential amplifier circuit, a voltage dividing circuit, a display screen, and a controller. When the edge connector is inserted into a second DIMM socket of a motherboard and the motherboard is powered on, the resistor samples first current, and converts the first current into a first voltage. The differential amplifier circuit amplifiers the first current to a second current. The voltage dividing circuit divides the first voltage, and outputs a second voltage. The controller converts the second current into a third current, converts the second voltage into a third voltage, and calculates a power according to the third current and the third voltage. | 11-29-2012 |
20120306273 | SEQUENCE CONTROL CIRCUIT FOR POWER SOURCE - A sequence control circuit for power sources includes two switched circuits and a sequence control unit. Each of the switched circuits has a control node and is coupled between a power source and a load. The sequence control unit includes two output terminals coupled to the control nodes. The output terminals generate control signals to control the sequence of the circuits being turned on. | 12-06-2012 |
20120316817 | MEASUREMENT CIRCUIT FOR MEASURING DIRECT CURRENT RESISTANCE OF INDUCTOR - A circuit for measuring the DC resistance of an inductor includes an input unit, a microprocessor module, a current source and a voltage detecting unit. The microprocessor module receives signals from the input unit and generates different signals to command constant currents through the inductor by the current source. The voltage detecting unit reads voltages of the inductor and outputs the voltages obtained to the microprocessor module. According to the currents and the voltages read, the microprocessor module may calculate the DC resistance(s) of the inductor. | 12-13-2012 |
20130049778 | BALANCING RESISTOR TESTING APPARATUS - A balancing resistor testing apparatus is configured for acquiring a resistance of a balancing resistor electronically connected to a supercapacitor of a series supercapacitor assembly in parallel. The balancing resistor testing apparatus includes a controller and a digital potentiometer. The controller detects a voltage across each supercapacitor of the series supercapacitor. The digital potentiometer comprising a plurality of variable resistors each of which is electronically connected to a supercapacitor in parallel, the controller controls the digital potentiometer to continuously adjust the effective resistance of each potentiometer until the controller detects that each supercapacitor has the same or very similar voltage. | 02-28-2013 |
20130063124 | MEASUREMENT CARD - A measurement card includes a circuit board, an edge connector on a bottom edge of the circuit board, a port arranged on the circuit board, and a single-pole double-throw switch for connecting the port to either a first or a second pin of the edge connector to tests the VDDQ and VTT outputs of a memory slot. | 03-14-2013 |
20130093506 | SOLID STATE DISK POWER SUPPLY SYSTEM - A solid state disk (SSD) power supply system includes power supply switching circuit. The power supply switching circuit comprises a first power input to receive a first direct current (DC) voltage signal, a second power input connected to a super capacitor to receive a second DC voltage signal provided by the super capacitor, a switching chip connected to the first and second power inputs and configured to select the second DC voltage signals to output in a situation that the first power input is disabled to receive the first DC voltage signal, a voltage converting chip to receive the voltage signal output from the switching chip, and a voltage output to output an operation voltage to an SSD according to the voltage signal. The switching chip and the voltage converting chip respectively output a first and second test signals for testing a discharging time of the super capacitor. | 04-18-2013 |
20130127489 | ELECTRONIC LOAD FOR TESTING DIMM SLOT - An exemplary electronic load includes a simulation load, a comparison circuit, a sample resistor, and a voltage control circuit. The comparison circuit includes a comparator. The sample resistor samples current flowing through the simulation load, and outputs the sampled current to a negative input of the comparator. An output of the comparator is connected to the simulation load. The voltage control circuit outputs an adjustable control voltage to a positive input of the comparator to control the simulation load to output an adjustable current. | 05-23-2013 |