Abstract: A multi-fan system and a driving method for the multi-fan system are provided. The multi-fan system includes a control source circuit and multiple electronic devices. The control source circuit includes a driving signal output terminal. The control source circuit outputs a device driving signal string through the driving signal output terminal. The device driving signal string includes multiple device driving signals with different identification codes. Each of the electronic devices includes a driving signal input terminal, a fan, a light emitting element group, and a controller. The controller receives a corresponding device driving signal in the device driving signal string through the driving signal input terminal. The corresponding device driving signal has a corresponding identification code corresponding to a corresponding electronic device. The controller controls an operation of at least one of the fan and the light emitting element group based on the corresponding device driving signal.

Abstract: A driving device and a driving-program updating method are provided. The driving device includes a signal converter, a storage circuit, a controller, a driver, and a detection circuit. The signal converter receives a first signal and converts the first signal into a second signal. The storage circuit stores a driving program. The controller provides a control signal in response to the second signal and the driving program. The driver drives a fan unit in response to the control signal. The detection circuit detects whether the first signal includes a program update command. When the first signal includes the program update command, the detection circuit updates the driving program stored in the storage circuit based on the program update command.

Abstract: A multi-fan system and a driving method for the multi-fan system are provided. The multi-fan system includes a control source circuit and multiple electronic devices. The control source circuit includes a driving signal output terminal. The control source circuit outputs a device driving signal string through the driving signal output terminal. The device driving signal string includes multiple device driving signals with different identification codes. Each of the electronic devices includes a driving signal input terminal, a fan, a light emitting element group, and a controller. The controller receives a corresponding device driving signal in the device driving signal string through the driving signal input terminal. The corresponding device driving signal has a corresponding identification code corresponding to a corresponding electronic device. The controller controls an operation of at least one of the fan and the light emitting element group based on the corresponding device driving signal.

Abstract: A driving device and a driving-program updating method are provided. The driving device includes a signal converter, a storage circuit, a controller, a driver, and a detection circuit. The signal converter receives a first signal and converts the first signal into a second signal. The storage circuit stores a driving program. The controller provides a control signal in response to the second signal and the driving program. The driver drives a fan unit in response to the control signal. The detection circuit detects whether the first signal includes a program update command. When the first signal includes the program update command, the detection circuit updates the driving program stored in the storage circuit based on the program update command.

Abstract: A fan system and a monitoring method are provided. The fan system includes a fan device and a controller. The fan device includes a fan unit, a detector, and a memory. The detector detects an operating state of the fan unit during operation to obtain operating raw data corresponding to the operating state. The memory records the operating raw data and stores a data protocol. The controller provides a monitoring request to allow the memory to provide the operating raw data and a data protocol to the controller, converts the operating raw data into operating state data through the data protocol, and provides an early warning notification signal according to the operating state data. When the operating raw data is provided to the controller, the operating raw data stored in the memory is erased.

Abstract: An electronic device and a driving method are provided. The electronic device includes a driving signal input terminal, a signal transmission terminal, a fan, a light-emitting element group, and a controller. The controller receives a first fan driving signal through the driving signal input terminal, and drives the fan by using the first fan driving. The controller provides a third fan driving signal to control an operation of the fan and provides a light-emitting driving signal string to drive the light-emitting element group based on a control signal when the first fan driving signal is converted into a second fan driving signal and the control signal is received through the signal transmission terminal.

Abstract: A motor control method is provided. The method includes: receiving a plurality of voltage control signals from a rotation speed controller to output a plurality of PWM signals; receiving the plurality of PWM signals to output three phase currents, so that a motor rotates; sensing three phase current values of the three phase currents; directly calculating a real rotor angle of the motor according to two of the three phase current values; and adjusting the plurality of the outputted voltage control signals according to an expected rotor speed and the calculated real rotor angle, so as to make the real rotor speed of the motor reach the expected rotor speed.

Abstract: A motor control method is provided. The method includes: receiving a plurality of voltage control signals from a rotation speed controller to output a plurality of PWM signals; receiving the plurality of PWM signals to output three phase currents, so that a motor rotates; sensing three phase current values of the three phase currents; directly calculating a real rotor angle of the motor according to two of the three phase current values; and adjusting the plurality of the outputted voltage control signals according to an expected rotor speed and the calculated real rotor angle, so as to make the real rotor speed of the motor reach the expected rotor speed.

Abstract: A current sensing module and a power conversion apparatus and an electronic apparatus using the same are provided. The current sensing module is suitable for detecting a first load current flowing through a first load. The current sensing module includes a sampling stage circuit and an output stage circuit. The sampling stage circuit couples across the first load and selectively exchanges coupling nodes between the sampling stage circuit and the first load by a multiplex switching means, so as to sample the first load current flowing along a first direction or a second direction, and thus generate a sampling signal. The output stage circuit is coupled to the sampling stage circuit and switches coupling nodes between the output stage circuit and the output terminal of the sampling stage circuit, so as to generate a current indication signal indicating the magnitude of the first load current according to the sampling signal.

Abstract: A current sensing module and a power conversion apparatus and an electronic apparatus using the same are provided. The current sensing module is suitable for detecting a first load current flowing through a first load. The current sensing module includes a sampling stage circuit and an output stage circuit. The sampling stage circuit couples across the first load and selectively exchanges coupling nodes between the sampling stage circuit and the first load by a multiplex switching means, so as to sample the first load current flowing along a first direction or a second direction, and thus generate a sampling signal. The output stage circuit is coupled to the sampling stage circuit and switches coupling nodes between the output stage circuit and the output terminal of the sampling stage circuit, so as to generate a current indication signal indicating the magnitude of the first load current according to the sampling signal.

Abstract: A smart power adaptor and a method of controlling power supply thereof are provided. The smart power adaptor includes a power conversion circuit and a control unit. The power conversion circuit is configured to convert an alternating current (AC) power into a direct current (DC) power for providing to a load device. The control unit is coupled to the power conversion circuit. The control unit is configured to apply a corresponding power-supply control mean according to a power state through communication of a charging communication protocol of a battery module of the load device to control an operation of the power conversion circuit, so that the power conversion circuit uses different power conversion behaviors to generate the DC power in response to changing of the power status.

Abstract: A reference power generating circuit and an electronic circuit using the same are provided. The reference power generating circuit includes a first bandgap reference circuit and a second bandgap reference circuit. The first bandgap reference circuit is biased by a power voltage to generate a first reference voltage, where the first reference voltage has a first offset. The second bandgap reference circuit is connected to the first bandgap reference circuit in series and receives the first reference voltage generated by the first bandgap reference circuit. The second bandgap reference circuit is biased by the first reference voltage to generate a baseline reference voltage. The baseline reference voltage has a second offset, and the second offset is smaller than the first offset.

Abstract: A smart power adaptor and a method of controlling power supply thereof are provided. The smart power adaptor includes a power conversion circuit and a control unit. The power conversion circuit is configured to convert an alternating current (AC) power into a direct current (DC) power for providing to a load device. The control unit is coupled to the power conversion circuit. The control unit is configured to apply a corresponding power-supply control mean according to a power state through communication of a charging communication protocol of a battery module of the load device to control an operation of the power conversion circuit, so that the power conversion circuit uses different power conversion behaviors to generate the DC power in response to changing of the power status.

Abstract: A reference power generating circuit and an electronic circuit using the same are provided. The reference power generating circuit includes a first bandgap reference circuit and a second bandgap reference circuit. The first bandgap reference circuit is biased by a power voltage to generate a first reference voltage, where the first reference voltage has a first offset. The second bandgap reference circuit is connected to the first bandgap reference circuit in series and receives the first reference voltage generated by the first bandgap reference circuit. The second bandgap reference circuit is biased by the first reference voltage to generate a baseline reference voltage. The baseline reference voltage has a second offset, and the second offset is smaller than the first offset.