Abstract: A power supply system with self-excited drive function includes a power supply apparatus, a logic disconnection circuit, a self-boosting circuit, a protection circuit, and a current sensing unit. The logic disconnection circuit is coupled between a positive power wire and a negative power wire. The self-boosting circuit converts a voltage into an auxiliary voltage, and the self-boosting circuit is coupled to the logic disconnection circuit to receive the auxiliary voltage. The current sensing unit outputs a current sensing signal according to a current flowing through the positive power wire or the negative power wire. The protection circuit makes a short circuit or an open circuit between the positive power wire and the negative power wire according to the current sensing signal. The logic disconnection circuit disables or enables the self-boosting circuit according to the voltage between the positive power wire and the negative power wire.

Abstract: A connection structure of an inductive element includes a circuit substrate, in inductive element, at least one connection wire, a supporting element, a containing element, a positioning element, a connecting element, and a locking element. The circuit substrate has a through hole. Each connection wire has a first end connected to the inductive element, and a fixed terminal is disposed on a second end of the connection wire. The containing element is formed on the supporting element to provide a containing space. The positioning element is contained in the containing space, and provides a positioning part. The connecting element has a first connecting part and a second connecting part. The first connecting part is connected to the positioning part to clip the fixed terminal. The locking element has a locking part. The locking part is connected to the second connecting part to lock on the circuit substrate.

Abstract: A test method for testing a solar power generation system is provided. The solar power generation system includes a DC to AC converter and a control unit. The DC to AC converter is electrically coupled between an external power grid and a solar panel. The control unit is configured to control the DC to AC converter to switch between a power generation mode and a test mode. When in the power generation mode, a photoelectric energy generated by the solar panel is provided to the external power grid via the DC to AC converter. When in the test mode, the control unit controls the DC to AC converter to generate a testing electrical energy by obtaining from the external power grid, to effect a test result of the solar panel when the testing electrical energy passes through the solar panel.

Abstract: A safety shutdown apparatus with self-driven control is coupled to a power-supplying path between a power supply apparatus and a load. The safety shutdown apparatus includes a detection unit, a controllable switch, and a drive circuit. The detection unit is coupled to the power-supplying path, and the controllable switch is coupled between a positive node and a negative node of the power-supplying path. The drive circuit is coupled to the detection unit, the power-supplying path, and the controllable switch. The drive circuit receives an output voltage of the power supply apparatus to turn on the controllable switch, and turn off the controllable switch according to whether the detection unit detects a current flowing through the power-supplying path.

Abstract: A connection structure of an inductive element includes a circuit substrate, in inductive element, at least one connection wire, a supporting element, a containing element, a positioning element, a connecting element, and a locking element. The circuit substrate has a through hole. Each connection wire has a first end connected to the inductive element, and a fixed terminal is disposed on a second end of the connection wire. The containing element is formed on the supporting element to provide a containing space. The positioning element is contained in the containing space, and provides a positioning part. The connecting element has a first connecting part and a second connecting part. The first connecting part is connected to the positioning part to clip the fixed terminal. The locking element has a locking part. The locking part is connected to the second connecting part to lock on the circuit substrate.

Abstract: A signal sampling circuit for arc detection includes plural current sensors, plural high pass filter circuits, and an adder circuit. Each of the current sensors is configured to sense a measured current and then generate a sensed voltage signal. One of the high pass filter circuits receives the sensed voltage signal from one of the current sensors and performs high-pass filtering on the sensed voltage signal. The adder circuit performs scaling up, adding, and DC offset on the high-pass filtered sensed voltage signals. Each of the high pass filter circuits is composed of a filter capacitor and a first resistor connected in series with the filter capacitor. The adder circuit is composed of the first resistors, a first operational amplifier, and a second resistor.

Abstract: A power conversion apparatus with dual-mode control includes a bridge arm assembly, a capacitor assembly, and control unit. The bridge arm assembly includes a first bridge arm and a second bridge arm. The control unit selectively controls the first bridge arm to be operated in a voltage source switching mode or a current source switching mode according to the load type of a first load, and controls the second bridge arm to be operated in the voltage source switching mode or the current source switching mode according to the load type of a second load.

Abstract: A smart grid system includes a current sensor, and plural power conversion devices coupled to an AC grid. The current sensor measures a total current flowed through the AC grid, thereby providing a measured current value. The power conversion devices include a master power conversion device and plural slave power conversion devices. The master power conversion device receives the measured current value, thereby controlling an output power of the master power conversion device and providing a first duty cycle signal according to the measured current value. A first one of the slave power conversion devices which is coupled to the master power conversion device receive the first duty cycle signal, thereby controlling an output power of the first one of the slave power conversion devices according to the first duty cycle signal. The master power conversion device and the slave power conversion devices are communicated via a daisy chain connection.

Abstract: A flying capacitor converter includes an inductor, a first switch and a second switch, a first diode and a second diode, a first capacitor and a second capacitor, a flying capacitor, a third diode and a third capacitor, a fourth diode, and a fifth diode. The inductor is coupled to a first node. The first switch and the second switch are commonly connected to a second node. The first diode and the second diode are commonly connected to a third node. The first capacitor and the second capacitor are commonly connected to a fourth node. The flying capacitor is coupled to the second node and the third node. The third diode and the third capacitor are commonly connected to a fifth node. The fifth diode is coupled to the third node and the fourth node.

Abstract: A signal sampling circuit for arc detection includes plural current sensors, plural high pass filter circuits, and an adder circuit. Each of the current sensors is configured to sense a measured current and then generate a sensed voltage signal. One of the high pass filter circuits receives the sensed voltage signal from one of the current sensors and performs high-pass filtering on the sensed voltage signal. The adder circuit performs scaling up, adding, and DC offset on the high-pass filtered sensed voltage signals. Each of the high pass filter circuits is composed of a filter capacitor and a first resistor connected in series with the filter capacitor. The adder circuit is composed of the first resistors, a first operational amplifier, and a second resistor.

Abstract: A step-up conversion module includes a first step-up circuit, a second step-up circuit, a first unidirectional conduction element, and a second unidirectional conduction element. The first step-up circuit includes a first input loop composed of a first inductor and a first switch unit. The second step-up circuit includes a second input loop composed of a second inductor and a second switch unit. The first inductor and the second inductor form a coupling inductor with a common core. The first unidirectional conduction element blocks a first reverse current induced by the coupling inductor to the first input loop. The second unidirectional conduction element blocks a second reverse current induced by the coupling inductor to the second input loop.

Abstract: A safety shutdown apparatus with self-driven control is coupled to a power-supplying path between a power supply apparatus and a load. The safety shutdown apparatus includes a detection unit, a controllable switch, and a drive circuit. The detection unit is coupled to the power-supplying path, and the controllable switch is coupled between a positive node and a negative node of the power-supplying path. The drive circuit is coupled to the detection unit, the power-supplying path, and the controllable switch. The drive circuit receives an output voltage of the power supply apparatus to turn on the controllable switch, and turn off the controllable switch according to whether the detection unit detects a current flowing through the power-supplying path.

Abstract: A power supply system with self-excited drive function includes a power supply apparatus, a logic disconnection circuit, a self-boosting circuit, a protection circuit, and a current sensing unit. The logic disconnection circuit is coupled between a positive power wire and a negative power wire. The self-boosting circuit converts a voltage into an auxiliary voltage, and the self-boosting circuit is coupled to the logic disconnection circuit to receive the auxiliary voltage. The current sensing unit outputs a current sensing signal according to a current flowing through the positive power wire or the negative power wire. The protection circuit makes a short circuit or an open circuit between the positive power wire and the negative power wire according to the current sensing signal. The logic disconnection circuit disables or enables the self-boosting circuit according to the voltage between the positive power wire and the negative power wire.

Abstract: A power conversion apparatus with dual-mode control includes a bridge arm assembly, a capacitor assembly, and control unit. The bridge arm assembly includes a first bridge arm and a second bridge arm. The control unit selectively controls the first bridge arm to be operated in a voltage source switching mode or a current source switching mode according to the load type of a first load, and controls the second bridge arm to be operated in the voltage source switching mode or the current source switching mode according to the load type of a second load.

Abstract: A test method for testing a solar power generation system is provided. The solar power generation system includes a DC to AC converter and a control unit. The DC to AC converter is electrically coupled between an external power grid and a solar panel. The control unit is configured to control the DC to AC converter to switch between a power generation mode and a test mode. When in the power generation mode, a photoelectric energy generated by the solar panel is provided to the external power grid via the DC to AC converter. When in the test mode, the control unit controls the DC to AC converter to generate a testing electrical energy by obtaining from the external power grid, to effect a test result of the solar panel when the testing electrical energy passes through the solar panel.

Abstract: A waterproof gasket structure and its gasket shaping mold are provided. The gasket shaping mold includes a mold seat having a surface, and plural mold cavity ring-grooves concavely formed on the surface, each having two corresponding longitudinal groove sections. At least one longitudinal groove section has one or more inwardly bent wavy bent portions, and plural turning round corner portions are formed at the junction between the longitudinal groove section and the wavy bent portion, and each turning round corner portion has a radius equal to or greater than 6 mm. Therefore, the middle of the mold cavity ring-groove can be utilized effectively, and plural waterproof gaskets can be manufactured by the same gasket shaping mold while achieving the effects of reducing the mold volume, improving the manufacturing efficiency, and saving the manufacturing cost.

Abstract: An input connection device for an electronic device is provided. The electronic device includes a mother circuit board and a cabinet having a first wall. The input connection device comprises an insulation housing, a conductive connection unit, a circuit board, a switch, a first power wire and a second power wire. The insulation housing is disposed on the first wall and comprises a main body comprising a hollow channel. The conductive connection unit is disposed in the hollow channel and is engaged with the insulation housing. The circuit board is connected with the conductive connection unit directly. The switch has an input part and an output part. The first power wire is connected with the circuit board and the input part of the switch. The second power wire is connected with the output part of the switch and the mother circuit board.

Abstract: A smart grid system includes a current sensor, and plural power conversion devices coupled to an AC grid. The current sensor measures a total current flowed through the AC grid, thereby providing a measured current value. The power conversion devices include a master power conversion device and plural slave power conversion devices. The master power conversion device receives the measured current value, thereby controlling an output power of the master power conversion device and providing a first duty cycle signal according to the measured current value. A first one of the slave power conversion devices which is coupled to the master power conversion device receive the first duty cycle signal, thereby controlling an output power of the first one of the slave power conversion devices according to the first duty cycle signal. The master power conversion device and the slave power conversion devices are communicated via a daisy chain connection.

Abstract: A hybrid drive circuit (100, 100?) drives a first characteristic transistor and a second characteristic transistor coupled in parallel to the first characteristic transistor according to an input signal (Sin). The hybrid drive circuit (100, 100?) includes a first turn-on path (Pc1), a first turn-off path (Ps1), a second turn-on path (Pc2), and a second turn-off path (Ps2). The first turn-on path (Pc1) and the second turn-on path (Pc2) produce a first delay time to delay turning on the first characteristic transistor. The first turn-off path (Ps1) and the second turn-off path (Ps2) produce a second delay time to delay turning off the second characteristic transistor.

Abstract: A power system includes a positive terminal, a negative terminal, a neutral point, and a conversion circuit including an AC terminal, two flying capacitors, and two switch modules. The two switch modules contain five switches respectively. The two second switches are connected in series and then connected in parallel with the first flying capacitor. The two first switches are connected in series at two ends of the two second switches respectively, and the third switch is connected between a first node between the two second switches and the AC terminal. The two fifth switches are connected in series and then connected in parallel with the second flying capacitor. The two fourth switches are connected in series at the two ends of the two fifth switches respectively, and the sixth switch is connected between a second node between the two fifth switches and the AC terminal.