Abstract: When there is a memory module mounted in a memory slot, a memory power circuit provides a voltage to the memory slot. First and second power pins of the memory slot are connected. A first electronic switch is turned on. A second electronic switch is turned off. A programmable logic controller (PLC) outputs a first control signal to the memory power circuit to output the voltage to the memory slot. When there is no memory module mounted in the memory slot and the motherboard is powered on, the memory power circuit provides a voltage to the memory slot. The first and second power pins of the memory slot are disconnected. The first electronic switch is turned off. The second electronic switch is turned on. The PLC outputs a second control signal to control the memory power circuit not to output the voltage to the memory slot.

Abstract: A device to measure power consumption includes a processor connected to a central processing unit (CPU) and a memory module, a switch for setting the power measurement device to measure either the power supplied to the CPU or the power supplied to the memory, and a display to show the results of such measurements.

Abstract: A checking circuit for a serial port connector includes a first inverter, a second inverter, a third inverter, and a first light emitting diode (LED) and a second LED with different colors. An input of the first inverter is connected to a transmitted data pin of the serial port connector. An output of the first inverter is connected to an anode of the first LED. An input of the second inverter is connected to the transmitted data pin of the serial port connector. An output of the second inverter is connected to an input of the third inverter. An output of the third inverter is connected to an anode of the second LED. Cathodes of the first and second LEDs are grounded.

Abstract: A circuit is used for displaying the amount of electrical energy consumed by an electronic device. The circuit includes an analog to digital (A/D) converting circuit, a microprocessor connected to the A/D converting circuit, and a display connected to a microprocessor for displaying the energy consumed by the electronic device.

Abstract: A power supply system provides power to a server cabinet, which includes a number of servers. A number of sockets, first and second electrical connecting portions, first and second through holes are arranged on a power connecting board. Each socket includes a first power pin connected to the first electrical connecting portion and a first ground pin connected to the second electrical connecting portion. A number of power interfaces, third and fourth electrical connecting portions, third and fourth through holes are arranged on a base. Each power interface includes a second power pin connected to the third electrical connecting portion and a second ground pin connected to the fourth electrical connecting portion. The base is electrically connected to the power connecting board when the first connecting element engages in the first and third through holes and the second connecting element engages in the second and fourth through holes.

Abstract: A power supply device for a solid state drive (SSD) inserted into a slot of a computer includes a number of voltage input contacts, a diode, a first voltage regulating module and a second voltage regulating module connected in series. The slot includes a number of voltage output contacts and a number of signal transmitting contacts. The voltage input contacts are connected to the voltage output contacts and selectively connected to the signal transmitting contacts. The voltage input contacts obtains an initial voltage from the slot from the voltage output contacts or the signal transmitting contacts. The first voltage regulating module boosts the initial voltage. The second voltage regulating module regulates the boosted voltage to a preset voltage. The diode prevents a voltage outputting from the voltage input contacts to the signal transmitting contacts.

Abstract: A power supply circuit includes a comparator, first to third electronic switches, a D-trigger, a power supply unit (PSU), and a complex programmable logic device (CPLD). When a voltage from the PSU is greater than a reference voltage, the first electronic switch is turned on. An electronic device connected to the first electronic does not receive power from the PSU. The second electronic switch is turned on. The third electronic switch is turned off. The D-trigger outputs a low level signal to make the CPLD control the PSU stop supplying power.

Abstract: A protection circuit includes first and second electronic switches. When a CPU socket does not contain a CPU, a signal pin of the CPU socket outputs a high level signal. The first and second electronic switches are turned on. A data transmitting line of a SMBus is connected to a digital integrated chip. The parameters of the digital integrated chip can thus be regulated. When the CPU socket contains the CPU, the signal pin of the CPU socket outputs a low level signal. The first and second electronic switches are turned off. The data transmitting line of the SMBus is disconnected from the digital integrated chip, to prevent damage to the digital integrated chip.

Abstract: A server includes an enclosure made of conductive material defining a first through hole and a second through hole, a power supply unit (PSU) converting alternating current power into direct current voltages, a motherboard, and first and second fasteners. The PSU includes a first power connector and a ground connector, and defines a screw hole. The ground connector is coupled to a shell of the PSU and a ground line of a plug of the PSU that receives the alternating current power. The motherboard includes a second power connector connected to the first power connector, and defines a fixing hole coated with conductive material electrically connected to a ground layer of the motherboard. The first fastener extends through the first through hole to engage in the screw hole of the PSU, and the second fastener extends through the second through hole to engage in the fixing hole.

Abstract: A composite includes a substrate and at least a resin composition formed on the substrate. A surface of the substrate is defined a plurality of micro-pores therein. The resin composition is coupled to the surface having the micro-pores by the resin composition filling and hardening within the micro-pores. The resin composition contains crystalline thermoplastic synthetic resins. A method for making the composite is also described.

Abstract: A CPU power testing apparatus includes a CPU power supplying circuit; a first A/D converter connected with an input of the CPU power supplying circuit. The first A/D converter obtains an input voltage of the CPU power supplying circuit and converts the input voltage into digital values Vin. A second A/D converter connected with an output of the CPU power supplying circuit obtains an output voltage of the CPU power supplying circuit and converts the output voltage into digital values Vout. A single-chip microcontroller obtains Vin from the first A/D converter, and Vout from the second A/D converter, and the system parameters of an application platform, and calculates and displays an amount of the power being consumed by the CPU according to a predetermined formula.

Abstract: A voltage converting circuit includes a power supply, a buck circuit a buck circuit electronically connected to the power supply, a current detection circuit electronically connected to the buck circuit and a PWM controller electronically connected to the buck circuit and the current detection circuit. The buck circuit is configured for converting a source voltage and a source current of the power supply to an output voltage and an output current driven by the PWM controller. The current detection circuit is configured for detecting a current variation of the output current. The PWM controller configuring for receiving the current variation of the output current, and driving the buck circuit to increase the output voltage when the output current is decreased, and driving the buck circuit to decrease the output voltage when the output current is increased.

Abstract: An expansion apparatus includes a serial advanced technology attachment dual-in-line memory module (SATA DIMM) with a first circuit board, an expansion card with a second circuit board, and a cable member. A first edge connector is set on a bottom edge of the first circuit board and includes a number of first power pins connected to a control chip, a number of first storage chips, and a first connector, and a number of first ground pins. A second edge connector is set on a bottom edge of the second circuit board and includes a number of second power pins connected to a number of second storage chips and a second connector, and a number of second ground pins. The cable member includes a cable, a third connector connected to the first connector, and a fourth connector connected to the second connector.

Abstract: A supporting apparatus for supporting a casing of an electronic device includes a supporting member and a locating member. The supporting member includes a supporting block supporting a bottom of the casing, and an extending block extending up from an end of the supporting block. The locating member is fixed to the extending block and to be detachably fixed to a sidewall of the electronic device.

Abstract: A power supply circuit for providing a voltage to a memory slot group with one or more memory slots includes a platform controller hub (PCH), a basic input/output system (BIOS), and a control circuit. The PCH detects whether any of the memory slots are occupied, and notifies the BIOS. If there are any memory slots are occupied, the BIOS enables a general purpose input/output (GPIO) terminal of the PCH. The control circuit controls a power supply to provide or not provide power to the memory slot group based on whether the GPIO terminal of the PCH is enabled.

Abstract: A power supply unit includes a storage unit, a temperature detecting unit, a ripple voltage detecting unit, and a processor. The storage unit stores a conversion relationship between ripple voltages V in different temperature ranges and equivalent ripple voltages Vs at a standard temperature Ts. The temperature detecting unit and the ripple voltage detecting unit detects a temperature T and a ripple voltage V of an electrolytic capacitor of the power supply unit respectively. The processor acquires an initial ripple voltage Vi of the electrolytic capacitor at an initial temperature Ti, acquires a working ripple voltage Vw at a working temperature Tw, converts Vi and Vw to equivalent ripple voltages Vis and Vws at the standard temperature Ts according to the relationship, compares Vws with Vis, and determines whether service life of the power supply unit is nearing its end.

Abstract: A heat sink is used to cool electronic components, and includes a metal base portion, a motherboard and a heat conducting sheet. The motherboard and the heat conducting sheet are positioned on the metal base portion. The motherboard includes a copper foil. The electronic components are electrically connected on the copper foil; the heat conducting sheet is positioned between the metal base portion and the motherboard, and contacts the metal base portion and the motherboard. The heat of the electronic components is conducted to the metal base portion through the copper foil, the motherboard and the heat conducting sheet.

Abstract: An overheating protection circuit for an electronic device includes a detection circuit, a switch element, and a control element. The detection circuit is positioned adjacent to an integrated circuit (IC) peripheral circuit of the electronic device and detects a temperature of the IC peripheral circuit. The switch element is electrically connected to the detection circuit, and the control element is electrically connected to the switch element and a heat dissipation device of the electronic device. The detection circuit generates a detection signal to turn on the switch element in response to detecting that a temperature of the IC peripheral circuit increases, and the control element controls the heat dissipation device to dissipate heat generated by the IC peripheral circuit in response to detecting that the switch element is turned on.

Abstract: A power supply system for a central processing unit (CPU) mounted on a motherboard includes a power supply unit, a conducting layer, and a number of conducting foils. The conducting layer is set on the motherboard. The conducting foils are connected to the conducting layer in parallel. The power supply unit supplies power to the CPU through the conducting layer and the conducting foils.

Abstract: An expansion apparatus includes a serial advanced technology attachment dual-in-line memory module (SATA DIMM) with a first circuit board, an expansion card with a second circuit board, and a cable member. A first edge connector is set on a bottom edge of the first circuit board and includes a number of first power pins connected to a control chip, a number of first storage chips, and a first connector, and a number of first ground pins. A second edge connector is set on a bottom edge of the second circuit board and includes a number of second power pins connected to a number of second storage chips and a second connector, and a number of second ground pins. The cable member includes a cable, a third connector connected to the first connector, and a fourth connector connected to the second connector.