Abstract: A power supply with duty cycle limiting circuit includes a conversion circuit, a drive circuit, a control unit, and a duty cycle limiting circuit. The duty cycle limiting circuit converts a control signal into a control voltage, and determines whether a power switch of a power supply is turned off according to the control voltage and a threshold voltage to limit a duty cycle of the power switch.

Abstract: A power supply with duty cycle limiting circuit includes a conversion circuit, a drive circuit, a control unit, and a duty cycle limiting circuit. The duty cycle limiting circuit converts a control signal into a control voltage, and determines whether a power switch of a power supply is turned off according to the control voltage and a threshold voltage to limit a duty cycle of the power switch.

Abstract: A lighting device includes a controller, a memory and a wireless communicator. The controller is coupled to the wireless communicator and configured to control an emitting element according to a wireless data signal. The memory is coupled to the controller and configured to store the wireless data signal. The wireless communicator includes a wireless transceiver element and a solar cell. The wireless transceiver element is configured to receive the wireless data signal. The solar cell is configured to receive visible light and convert visible light into electric power to supply to the controller, the memory, the wireless transceiver element or the emitting element.

Abstract: A power supply includes an integrated cable manager board. The integrated cable manager board is configured to integrate elements of the power supply on the integrated cable manager board. The integrated cable manager board includes a circuit monitoring device and a plurality of connectors. The circuit monitoring device is disposed on the integrated cable manager board and monitors the circuit status of the power supply. The connectors are disposed on the integrated cable manager board and each of the connectors is operable to provide power.

Abstract: A bobbin used in a transformer is disclosed. The bobbin includes a main body, two side walls, two wire collecting bases and at least one extension wire collecting base. The main body has a tunnel. The two side walls are disposed on the two ends of the main body, respectively. The tunnel passes through the two ends of the main body and the two side walls. The two wire collecting bases are disposed on the two side walls respectively or on one of the two side walls. Each wire collecting base has at least one wire collecting part. The extension wire collecting base has at least one extension wire collecting part. The extension wire collecting base can couple with the wire collecting base.

Abstract: A multi-output buck converting apparatus with a controllable energy-releasing function includes a main buck converter and at least one auxiliary buck converter to provide multi-output voltages. The multi-output buck converting apparatus further includes an energy releasing unit and an abnormal voltage signal generating unit. The abnormal voltage signal generating unit generates a control signal to control a switch device of the energy releasing unit when the multi-output buck converting apparatus shuts down. Therefore, the energy, which is stored in the auxiliary buck converter, can be released through the energy releasing unit so as to avoid returning the energy to the main buck converter and rebounding a main output voltage.

Abstract: A multi-output DC-to-DC conversion apparatus with a voltage-stabilizing function includes a center-tapped main transformer, a semiconductor component group, and a triggering controller. The DC-to-DC conversion apparatus provides at least two output voltages which are a main output voltage and an auxiliary output voltage, respectively. The auxiliary output voltage is functioned as an input voltage of a buck converter; and, as a result, the auxiliary output voltage can be adjusted to obtain a lower variable DC voltage. The triggering controller is used to stabilize the main output voltage and the auxiliary output voltage. Therefore, the main transformer provides one or two secondary windings to step down the auxiliary output voltage so as to increase efficiency of the buck converter.

Abstract: A bobbin used in a transformer is disclosed. The bobbin includes a main body, two side walls, two wire collecting bases and at least one extension wire collecting base. The main body has a tunnel. The two side walls are disposed on the two ends of the main body, respectively. The tunnel passes through the two ends of the main body and the two side walls. The two wire collecting bases are disposed on the two side walls respectively or on one of the two side walls. Each wire collecting base has at least one wire collecting part. The extension wire collecting base has at least one extension wire collecting part. The extension wire collecting base can couple with the wire collecting base.

Abstract: A multi-output buck converting apparatus with a shutdown protection includes a main buck converter and at least one auxiliary buck converter to provide multi-output voltages. The multi-output buck converting apparatus further includes an abnormal voltage signal generating unit. The abnormal voltage signal generating unit generates a control signal to control switch devices of the auxiliary buck converter when the multi-output buck converting apparatus shuts down. Therefore, the stored energy in the auxiliary buck converter can be released through internal loops or external loops with connected operational loads so as to avoid the recovering energy rebounding a main output voltage of the main buck converter.

Abstract: A multi-output DC-to-DC conversion apparatus with a voltage-stabilizing function includes a center-tapped main transformer, a semiconductor component group, and a triggering controller. The DC-to-DC conversion apparatus provides at least two output voltages which are a main output voltage and an auxiliary output voltage, respectively. The auxiliary output voltage is functioned as an input voltage of a buck converter; and, as a result, the auxiliary output voltage can be adjusted to obtain a lower variable DC voltage. The triggering controller is used to stabilize the main output voltage and the auxiliary output voltage. Therefore, the main transformer provides one or two secondary windings to step down the auxiliary output voltage so as to increase efficiency of the buck converter.

Abstract: A power supply includes an integrated cable manager board. The integrated cable manager board is configured to integrate elements of the power supply on the integrated cable manager board. The integrated cable manager board includes a circuit monitoring device and a plurality of connectors. The circuit monitoring device is disposed on the integrated cable manager board and monitors the circuit status of the power supply. The connectors are disposed on the integrated cable manager board and each of the connectors is operable to provide power.

Abstract: A multi-output buck converting apparatus with a controllable energy-releasing function includes a main buck converter and at least one auxiliary buck converter to provide multi-output voltages. The multi-output buck converting apparatus further includes an energy releasing unit and an abnormal voltage signal generating unit. The abnormal voltage signal generating unit generates a control signal to control a switch device of the energy releasing unit when the multi-output buck converting apparatus shuts down. Therefore, the energy, which is stored in the auxiliary buck converter, can be released through the energy releasing unit so as to avoid returning the energy to the main buck converter and rebounding a main output voltage.

Abstract: A multi-output buck converting apparatus with a shutdown protection includes a main buck converter and at least one auxiliary buck converter to provide multi-output voltages. The multi-output buck converting apparatus further includes an abnormal voltage signal generating unit. The abnormal voltage signal generating unit generates a control signal to control switch devices of the auxiliary buck converter when the multi-output buck converting apparatus shuts down. Therefore, the stored energy in the auxiliary buck converter can be released through internal loops or external loops with connected operational loads so as to avoid the recovering energy rebounding a main output voltage of the main buck converter.

Abstract: A multi-output DC-to-DC conversion apparatus with a voltage-stabilizing function includes a center-tapped main transformer, a semiconductor component group, and a triggering controller. The DC-to-DC conversion apparatus provides at least two output voltages which are a main output voltage and an auxiliary output voltage, respectively. The auxiliary output voltage is functioned as an input voltage of a buck converter; and, as a result, the auxiliary output voltage can be adjusted to obtain a lower variable DC voltage. The triggering controller is used to stabilize the main output voltage and the auxiliary output voltage. Therefore, the main transformer provides one or two secondary windings to step down the auxiliary output voltage so as to increase efficiency of the buck converter.

Abstract: A power supply is used in a computer. The power supply includes a main power circuit, an auxiliary power circuit and a switching circuit. The main power circuit has a first main output terminal for outputting a first operating DC voltage. The auxiliary power circuit has an auxiliary output terminal connected to a standby circuit of the computer for outputting a standby DC voltage. The switching circuit is interconnected between the first main output terminal and the auxiliary output terminal. When the computer is in a power-off state, the switching circuit is shut off, and the standby circuit is powered by the standby DC voltage. When the computer is in a power-on state, the switching circuit is conducted, and the first operating DC voltage is transmitted to the standby circuit through the first main output terminal and the switching circuit so as to power the standby circuit.

Abstract: A power source includes a power input terminal, a filtering unit, a main circuit and a capacitor energy release circuit. The power input terminal receives an AC voltage. The filtering unit is connected to the power input terminal for filtering off noise contained in the AC voltage. The main circuit is connected to the filtering unit and a load. The AC voltage is filtered by the filtering unit and converted into an output DC voltage by the main circuit, and the output DC voltage is transmitted to the load. The capacitor energy release circuit is connected to the power input terminal, the filtering unit and a common terminal for detecting whether the AC voltage is received by the power input terminal. When the AC voltage is not received by the power input terminal, electric energy stored in the filtering unit is discharged.

Abstract: A power supply having an external power source, for receiving a power energy of an input voltage and converting to an external power source and an internal power source which is used in a computer, is disclosed.

Abstract: A two-stage switching power supply includes a first-stage power circuit, a bus capacitor, a second-stage power circuit and a power control unit. The first-stage power circuit is connected to a power bus for receiving an input voltage, and includes a first switching circuit. The input voltage is converted into a bus voltage by alternately conducting and shutting off the first switching circuit. The second-stage power circuit is connected to the power bus for receiving the bus voltage, and includes a second switching circuit. The power control unit is used for controlling operations of the first switching circuit and the second switching circuit. The bus voltage is dynamically adjusted according to electricity consumption amount of the system circuit under control of the power control unit. An operating mode of the second switching circuit of the second-stage power circuit is changed according to the electricity consumption amount of the system circuit.

Abstract: An intelligent power supply apparatus includes a power converting circuit, one or more sensors, an audio processor, an operating status processor, a storage unit and a loudspeaker. The power converting circuit is used for converting an input voltage into a regulated DC output voltage. The sensors detect operating statuses of the intelligent power supply apparatus, thereby generating corresponding sensing signals. The audio data are processed by the audio processor. The operating status processor is electrically connected to the sensors and the audio processor for controlling the audio processor to generate corresponding output audio signals in response to the sensing signals. The storage unit is electrically connected to the audio processor and/or the operating status processor for storing therein audio data. The loudspeaker is electrically connected to the audio processor for generating audio prompts corresponding to the output audio signals.