摘要:
A wireless remote control device for controlling an electronic device includes a switch module, a wireless transmission module, a wireless receiving module and a control module. The switch module receives a DC voltage and outputs a first control signal. The wireless transmission module receives the first control signal and encodes the first control signal to output an encoded first control signal. The wireless receiving module receives the encoded first control signal and decodes the encoded first control signal to output a decoded first control signal. The control module receives the decoded first control signal and outputs a second control signal to turn on/off or reset the electronic device.
摘要:
A power supply circuit for a CPU (central processing unit) includes a CPU, a power supply, a plurality of voltage adjustment modules, a pulse width modulator, a plurality of resistivity selection modules, and a module management unit. The resistivity selection module includes an electronic switch, a first resistor, a second resistor, a third resistor, and a fourth resistor. When the CPU operates abnormally, the power supply circuit utilizes the resistors in the resistivity selection module as voltage dividers, thereby restricting MOSFET or other components to operate in a normal voltage range.
摘要:
An output voltage adjustment circuit for buck circuits includes a microcontroller, first to eighth keys, and a display unit. The first to eighth keys input voltage adjustment signals to the microcontroller. A first input pin of the microcontroller is connected to a voltage output terminal. A second resistor is connected between the first input pin of the microcontroller and ground. A first to a sixth input/output pin of the microcontroller are connected to the display unit. A first to an eighth output pin of the microcontroller are connected to a pulse width modulation (PWM) controller. The first to eighth keys are selectively activated to provide voltage adjustment signals to the microcontroller, sampling output voltages of the voltage output terminal, comparing with a predetermined voltage, controlling the PWM controller to fine tune the duty cycle to output a stable voltage from the voltage output terminal. The display unit displays the voltages on the voltage output terminal.
摘要:
An electrical parameter detection device is configured for detecting electrical parameters of a peripheral component interconnect (PCI) connector including a plurality of power pins. The electrical parameter detection device includes a processor module, a first detection module, and a second detection module. The processor module continuously detects voltage values of electric potentials provided by each of the power pins of the PCI connector using the first detection module, and determines time sequences of the electric potentials according to the voltage values of the electric potentials. Furthermore, the processor module detects the amount of power provided by each of the power pins of the PCI connector using the second detection module.
摘要:
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.
摘要:
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.
摘要:
A test system includes a motherboard and a test card. The motherboard includes a number of electronic components and a first connector. The test card includes a second connector and a number of indicating circuits. The first connector includes a number of signal pins. Each signal pin of the first connector is connected to a corresponding signal terminal of the electronic components, to receive a power good signal. The second connector includes a number of signal pins. Each signal pin of the second connector is connected to a corresponding signal pin of the first connector, to receive a corresponding power good signal. Each indicating circuit is connected to a corresponding signal pin of the second connector, and indicates whether the corresponding signal pin of the second connector outputs a power good signal.
摘要:
A current measurement circuit to measure current flowing through an inductor includes two metal oxide semiconductor field effect transistors, a resistor, a negative temperature coefficient thermistor, two capacitors, and a pulse width modulator.
摘要:
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.
摘要:
A power matching system is applied to a central processing unit (CPU) power supply, which includes a power control chip to regulate the frequency of the signal applied to the CPU power supply. The power control chip includes a detecting pin. The power matching system includes a control unit and a control circuit. The control unit includes a platform controller hub (PCH) to obtain information concerning a CPU, a basic input output system (BIOS) to obtain a power rating of the CPU, and an integrated baseboard management controller (IBMC) to output a required signal to the control circuit according to the power rating established. The power control chip receives the required signal from the control circuit and regulates the frequency of the signal applied to the CPU power supply.