Hon Hai Precision Industry Co., Ltd.

Ampower Technology Co., Ltd.

Chih-Chan Ger

Chia-Kun Chen

Chi-Chang Lu

Wen-Lin Chen

Ko-Wen Wang

Chi-Wen Kan

Yu-Hsiang Liao

Chia-Peng Wang

Tsung-Liang Hung

Chih-Chang Chang

Yi-Cheng Liu

Yun-Bing Wang

Tzu-Chiang Mi

Shang-Ting Chen

Chia-Ming Chang

Yu-Chi Tsai

Yu-Hsiao Chao

Cheng-Ta Lin

Chen-An Chiang

Chun-Ying Chen

Yu-Sheng Tao

Lien-Fu Chien

A junction box connected to a plurality of solar cell panels connected in series and under control a control device, includes a plurality of diodes, two ports, a switch, and a communication module. The plurality of diodes is forwardly connected in series to form a diode string with two ends, and each of the plurality of diodes is electrically connected to a corresponding one of the plurality of solar cell panels in parallel. The two ports are respectively connected to the two ends of the diode string and the plurality of solar cell panels, and output DC power of the plurality of solar cell panels. The switch is connected between the diode string and the two ports. The communication module is connected to the switch, and receives control signals from the control device to turn on or off the switch to control output of the DC power of the solar cell panels from the two ports.

Junction box

A photovoltaic junction box includes a housing, a circuit board received in the housing, a plurality of metal brackets, and a plurality of bypass diodes. The plurality of metal brackets are secured to the circuit board, each of the plurality of metal brackets defines a receiving space receiving a spring sheet. The plurality of bypass diodes are respectively secured to the plurality of metal brackets and electrically connected to the circuit board. Each of a plurality of ribbons is clamped between the spring sheet and a corresponding metal bracket, and the ribbon directly and electrically contacts the corresponding metal bracket.

Photovoltaic junction box

A multi-lamp driving system includes a power stage circuit, a pulse width modulation (PWM) controller, a plurality of transformer circuits, and an abnormal detection circuit. Each of the transformer circuits includes a first primary winding and a second primary winding connected in series and a first secondary winding and a second secondary winding respectively outputting AC power signals to drive at least one lamp. The abnormal detection circuit is connected to a junction of the first primary winding and the second primary winding of each of the transformer circuits, and determines if voltages of the junction of the first primary winding and the second primary winding of each of the transformer circuits are different to determine if the at least two lamps are normal. The abnormal detection circuit further generate control signals to control the PWM controller upon the condition that one of the at least two lamps are abnormal.

Multi-lamp driving system

A junction box electronically connected to a solar panel and connected to a plurality of solar cell strings connected in series includes a first bypass diode string and at least one second bypass diode. The first bypass diode string includes a plurality of first bypass diodes forwardly connected in series, and each of the plurality of first bypass diodes is connected to a corresponding one of the plurality of solar cell strings in parallel. The at least one second bypass diode connected to at least two neighboring solar cell strings in parallel, turns on to bypass the at least two neighboring solar cell strings upon the condition that the at least two neighboring solar cell strings are abnormal simultaneously.

A power supply system includes an electromagnetic interference (EMI) filter circuit, a rectifier and filter circuit, a switch circuit, a transformer, a feedback circuit and a controller. The feedback circuit includes a voltage divider circuit, a filter circuit, and a voltage and temperature compensation circuit. The voltage divider circuit generates a voltage dividing signal, and includes a first lossless element and a second lossless element connected in series between an output of the transformer and the ground, and the voltage dividing signal is generated at a node of the first and second lossless elements. The filter circuit filters the voltage dividing signal into a direct current (DC) signal. The voltage and temperature compensation circuit does voltage compensation and temperature compensation to the DC signal to generate a feedback signal, and sends the feedback signal to the controller.

Power supply system

A bypass protection circuit connected to a light emitting diode (LED) group in parallel, comprises a switch circuit and a capacitor. The switch circuit comprises a plurality of switch components, an abnormal detection module and a switch control module. The abnormal detection module detects voltage of the LEDs respectively, and determines which one is broken and outputs an abnormal signal. The switch control module controls a switch component connected to the broken LED in parallel on/off according to the abnormal signal. The capacitor is charged by driving signals of the LEDs when the LEDs are operated according to a normal working mode or a first status of a burst dimming mode, and is discharged to maintain an operating power of the switch circuit when the LEDs are operated according to a second status of the burst dimming mode.

Bypass protection circuit and light emitting diode driving device using the same

A power device includes a substrate portion and a connector plug. The substrate portion defines a recess portion and a pair of receiving grooves, and includes at least one contact terminal. The connector plug includes a main body and a pair of conducting strips protruding outwardly from the main body. The main body defines at least one receiving slot. The pair of conducting strips are received in the receiving grooves correspondingly and the contact terminals slide into the corresponding receiving slots to accommodate the connector plug in the substrate portion. The main body and the recess portion are in a square shape respectively, so that the connector plug is capable of turning for 90 degrees relative to the substrate portion to be mounted on the substrate portion.

Power device with a movable connector plug

A power device transforms input power into power for output, and includes an input unit, a power factor unit, an output unit, a power saving unit, and a control signal port. The power saving unit includes a first electronic switch, a first diode and a single-direction switch. The first electronic switch is connected between the input unit and the power factor unit. An anode of the first diode is connected to the input unit, and a cathode of the first diode is connected to the output unit. The single-direction switch is connected to the power factor unit and the output unit to block current from the output unit to the power factor unit. The control signal port controls an on/off state of the first electronic switch.

Power supply device with low standby power consumption

A power device transforms input power into power for output, and includes an input unit, a power factor unit, a first electronic switch, an output unit, and a control signal port. The power factor unit includes a power factor correction circuit and a first detection circuit connected to an output end of the power factor unit and the power factor correction circuit. The first electronic switch is connected to the first detection circuit, and is under control of the control signal port.

A transformer can be mounted on a circuit board. The circuit board includes a high-voltage line and a load. The transformer includes a bobbin used for winding a coil. The bobbin includes a first secondary area. A first secondary high voltage pole extends from the first secondary area. A first secondary high voltage pin is fixed on an end of the first secondary high voltage pole away from the first secondary area. The bobbin is made of an insulator. The first secondary high voltage pin is made of a conductor. The high voltage end of the coil is disposed on a top surface of the first secondary high voltage pole and electrically connected to the first secondary high voltage pin. The first secondary high voltage pole is capable of jumping across the high-voltage line to make the first secondary high voltage pin to electrically connect to the load.

Transformer including high voltage pole and electrical connection to load

A light source driving device drives a plurality of light sources. A Power Factor Circuit (PFC) circuit converts a received electrical signal to a DC signal and output to a DC/AC converting circuit. The DC/AC converting circuit converts the DC signal to another AC signal, which is isolated by the transformer circuit. A resonance balancing circuit converts the AC signal output from the transformer circuit to another AC signal to drive the light source module. A PWM dimming controller outputs a control signal to control output of the DC/AC converting circuit according to a received dimming signal, wherein duty cycle of the control signal is fixed. A voltage dividing circuit adjustably divides voltage of the DC signal output from the PFC circuit. A PFC controller feeds the divided signal back to the PFC circuit to control the DC signal output from the PFC circuit.

Light source driving device

A light source driving device includes a power factor correction (PFC) circuit, a power stage circuit, a power conversion circuit, a balancing circuit, an inverter control signal processor, an inverter controller and an isolation component. Alternating current (AC) signals are converted into electrical signals to drive lamps via the PFC circuit, the power stage circuit, the power conversion circuit and the current balancing circuit. The power conversion circuit including a transformer divides the driving device into a primary side and a secondary side. The inverter control signal processor receives a first control signal output from a secondary side and generates a second control signal. The inverter controller is disposed on the secondary side to drive the power stage circuit. The isolation component transmits the second control signal to the inverter controller and isolates the inverter control signal processor from the inverter controller.

A display driving circuit includes a temperature compensation adjustment circuit, a control circuit, a full bridge circuit, and a transformation circuit. The temperature compensation adjustment circuit provides a current signal for the control circuit. The value of the current signal changes along with environment temperature changes. The control circuit controls the full bridge circuit based on the current signal. An output voltage signal of the full bridge circuit decreases as the current signal increases, and when the environment temperature decreases. The transformation circuit amplifies the output voltage signal of the full bridge circuit to drive a display.

Display driving circuit

A driving device () for driving a plurality of discharge lamps (), and includes a controller board (), a connecting board (), and a group of high voltage lines (). The controller board includes a controller circuit () for converting a received signal to a high voltage signal suitable to drive the plurality of discharge lamps. The connecting board includes a balance circuit for balancing currents flowing through the plurality of discharge lamps. The connecting board is substantially perpendicular to the controller board. The high voltage lines are connected to the controller board and the connecting board, and the high voltage signal from the controller circuit is output to the balance circuit via the high voltage lines.

Driving device for driving discharge lamps and electronic device employing the same

A fault detection circuit connects to and determines the occurrence of failure in an inverter circuit. The inverter circuit comprises three outputs to connect three groups of lamps respectively, and the fault detection circuit comprises a magnetic unit and a signal detection unit. The magnetic unit comprises first, second and third flux generating windings electrically connected to the three outputs of the inverter circuit, and a flux detection winding. If no fault occurs on the outputs of the inverter circuit, total flux generated by the flux generating windings is cancelled out. As long as any fault occurs on the outputs of the inverter circuit, flux generated by the flux generating windings cannot be canceled out, and the flux detection winding is electromagnetically coupled accordingly and driven by the generated flux to output a coupling signal, based on which the signal detection unit generates an alert signal accordingly.

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Jhongli, Taiwan

Chih-Chan Ger