Abstract: A multiphase motor driving circuit includes: a power stage circuit; and a control circuit. In a motor braking mode, when a holding voltage is less than the first voltage threshold, a first sub-mode is entered, in which the control circuit controls at least a portion of switches in the power stage circuit with a pulse width modulation (PWM) signal to switch periodically, thereby converting a back electromotive force (EMF) of a multiphase motor into the holding voltage to supply power to the control circuit. In the motor braking mode, when the holding voltage is greater than the second voltage threshold, a second sub-mode is entered, in which the control circuit controls at least a portion of switches in the power stage circuit with the PWM signal to keep them continuously conductive, thereby consuming the back EMF of the multiphase motor to reduce a speed of the multiphase motor.

Abstract: A centering vice is provided, including: a base, a clamp assembly and an adjusting assembly. The base includes a sliding groove extending in a first direction and a first abutting portion. The clamp assembly includes a first jaw portion and a second jaw portion. The adjusting assembly includes a threaded rod, a positioning member and two adjusting members. The threaded rod includes a first threaded segment, a second threaded segment and a positioning portion. The positioning member is immovably connected to the positioning portion and disposed between the two adjusting members, and the two adjusting members respectively have a second abutting portion abutted against the first abutting portion. The two adjusting members are movable relative to the base in a second direction lateral to the first direction to urge the positioning member to move in the first direction.

Abstract: A method for predicting failure of a cooling fan includes driving a motor of the cooling fan based on a control speed, generating a first speed according to an average speed of the motor, generating a first current according to an average current of the motor, retrieving a system coefficient from a memory, generating a current threshold according to the first speed and the system coefficient, and triggering an alarm signal if the first current exceeds the current threshold by a threshold amount.

Abstract: A positioning device is provided, including: a base seat, including a plurality through holes and a slide groove; a clamping assembly, disposed within the slide groove, including a first clamping body and a second clamping body; an adjustment assembly, including a first driving rod, a second driving rod and at least one rotation rod, the first driving rod including a first thread section and a first bevel gear, the second driving rod including a second thread section and a second bevel gear, the first clamping body and the second clamping body are respectively screwed on the first thread section and the second thread section, each rotation rod including a third bevel gear, the third bevel gear respectively meshed with the first bevel gear and the second bevel gear.

Abstract: A positioning device is provided, including: a base seat, including a plurality through holes and a slide groove; a clamping assembly, disposed within the slide groove, including a first clamping body and a second clamping body; an adjustment assembly, including a first driving rod, a second driving rod and at least one rotation rod, the first driving rod including a first thread section and a first bevel gear, the second driving rod including a second thread section and a second bevel gear, the first clamping body and the second clamping body are respectively screwed on the first thread section and the second thread section, each rotation rod including a third bevel gear, the third bevel gear respectively meshed with the first bevel gear and the second bevel gear.

Abstract: A hanging device includes a wall fixing plate, a wall hanging element, and a spiral spring. The wall fixing plate includes a fixing portion, an abutting portion, and a first fitting portion. The wall hanging element includes a housing and a fixing member. The housing has a back surface, and the back surface has a second fitting portion and a spring installation region. The spiral spring is disposed in the spring installation region and includes an inner arc section, an outer arc section, and an arc connecting section.

Abstract: A hanging device includes a wall fixing plate, a wall hanging element, and a spiral spring. The wall fixing plate includes a fixing portion, an abutting portion, and a first fitting portion. The wall hanging element includes a housing and a fixing member. The housing has a back surface, and the back surface has a second fitting portion and a spring installation region. The spiral spring is disposed in the spring installation region and includes an inner arc section, an outer arc section, and an arc connecting section.

Abstract: A centering vice is provided, including: a base, a clamp assembly and an adjusting assembly. The base includes a sliding groove extending in a first direction and a first abutting portion. The clamp assembly includes a first jaw portion and a second jaw portion. The adjusting assembly includes a threaded rod, a positioning member and two adjusting members. The threaded rod includes a first threaded segment, a second threaded segment and a positioning portion. The positioning member is immovably connected to the positioning portion and disposed between the two adjusting members, and the two adjusting members respectively have a second abutting portion abutted against the first abutting portion. The two adjusting members are movable relative to the base in a second direction lateral to the first direction to urge the positioning member to move in the first direction.

Abstract: A BLDC motor driver circuit includes: a driving power stage circuit configured to provide a start-up test signal in a start-up mode to excite a BLDC motor, to drive a rotor of the BLDC motor to rotate for a test; a current unidirectional circuit coupled to the BLDC motor at a reverse end for detecting a BEMF, to generate a detection signal at a forward end of the current unidirectional circuit, wherein when a voltage at the reverse end exceeds a voltage at the forward end, the current unidirectional circuit limits the voltage at the forward end not to be higher than a clamp voltage; a biasing circuit for biasing the current unidirectional circuit in a forward operation state and for providing the clamp voltage; and a sensor circuit for generating a sensing signal according to the detection signal to indicate a test rotation state of the BLDC motor.

Abstract: A BLDC motor driver circuit includes: a driving power stage circuit configured to provide a start-up test signal in a start-up mode to excite a BLDC motor, to drive a rotor of the BLDC motor to rotate for a test; a current unidirectional circuit coupled to the BLDC motor at a reverse end for detecting a BEMF, to generate a detection signal at a forward end of the current unidirectional circuit, wherein when a voltage at the reverse end exceeds a voltage at the forward end, the current unidirectional circuit limits the voltage at the forward end not to be higher than a clamp voltage; a biasing circuit for biasing the current unidirectional circuit in a forward operation state and for providing the clamp voltage; and a sensor circuit for generating a sensing signal according to the detection signal to indicate a test rotation state of the BLDC motor.

Abstract: A vise jaw is provided, including: a first jaw, including a slide groove and at least one locking portion, each locking portion including a receiving room, a threaded hole and a through hole, the receiving room, the threaded hole and the through hole respectively communicated with each other; a second jaw, having a slide protrusion slidably disposed within the slide groove, the slide protrusion having a lateral face facing the through hole; at least one fastening assembly, each fastening assembly including a screw member, an abutting member and at least one elastic member, the screw member screwed into the threaded hole, the abutting member adjustably disposed within the receiving room, the abutting member including a large diameter section and a small diameter section which are arranged along a first direction, the small diameter section disposed through the through hole and extending into the slide groove.

Abstract: A traffic information interaction system is provided. The system includes a plurality of lighting apparatuses and a first electronic device. Each of the lighting apparatuses emits light according to received power, so as to indicate whether a corresponding path is passable with the emitted light. In addition, each of the lighting apparatuses further pushes information. The first electronic device generates a request according to received information, and transmits the request to a target lighting apparatus of the lighting apparatuses. The target lighting apparatus adjusts target information pushed by the target lighting apparatus according to the request.

Abstract: A vise jaw is provided, including: a first jaw, including a slide groove and at least one locking portion, each locking portion including a receiving room, a threaded hole and a through hole, the receiving room, the threaded hole and the through hole respectively communicated with each other; a second jaw, having a slide protrusion slidably disposed within the slide groove, the slide protrusion having a lateral face facing the through hole; at least one fastening assembly, each fastening assembly including a screw member, an abutting member and at least one elastic member, the screw member screwed into the threaded hole, the abutting member adjustably disposed within the receiving room, the abutting member including a large diameter section and a small diameter section which are arranged along a first direction, the small diameter section disposed through the through hole and extending into the slide groove.

Abstract: A traffic information interaction system is provided. The system includes a plurality of lighting apparatuses and a first electronic device. Each of the lighting apparatuses emits light according to received power, so as to indicate whether a corresponding path is passable with the emitted light. In addition, each of the lighting apparatuses further pushes information. The first electronic device generates a request according to received information, and transmits the request to a target lighting apparatus of the lighting apparatuses. The target lighting apparatus adjusts target information pushed by the target lighting apparatus according to the request.

Abstract: A passing information pushing system is provided. The system includes a plurality of lamps, and an electronic device. Each of the lamps continuously identifies a signal type of power, calculates a remaining duration corresponding to the current signal type, and pushes a passing state and the remaining duration corresponding to the current signal type. The electronic device receives a first information from a first lamp, and identifies a first lamp direction. The electronic device receives a second information from a second lamp, and identifies a second lamp direction. Furthermore, the electronic device notifies a corresponding passing state and remaining duration according to the first information or the second information by determining whether a current moving direction is parallel to the first lamp direction or the second lamp direction.

Abstract: A passing information pushing system is provided. The system includes a plurality of lamps, and an electronic device. Each of the lamps continuously identifies a signal type of power, calculates a remaining duration corresponding to the current signal type, and pushes a passing state and the remaining duration corresponding to the current signal type. The electronic device receives a first information from a first lamp, and identifies a first lamp direction. The electronic device receives a second information from a second lamp, and identifies a second lamp direction. Furthermore, the electronic device notifies a corresponding passing state and remaining duration according to the first information or the second information by determining whether a current moving direction is parallel to the first lamp direction or the second lamp direction.

Abstract: A vise is provided, including: a pushing block, including at least one pushing side, each said pushing side including at least one first pushing abutting inclined surface and at least one first restriction structure, each said first restriction structure having a first sliding abutting inclined surface; at least one clamping block, each said clamping block including at least one second restriction structure, each said second restriction structure including at least one second sliding abutting inclined surface, the at least one second restriction structure of each said clamping block slidably restrictable with the at least one first restriction structure, each said second restriction structure and one said first restriction structure restrictably abutting against each other and non-detachable on a direction perpendicular to a sliding path of the clamping block, the second sliding abutting inclined surface parallel to the first sliding abutting inclined surface.

Abstract: Control methods and apparatuses providing a holding current for a TRIAC dimmer are disclosed. A control method is suitable for a power controller powered by an operation power source. A high-voltage device in the power controller is connected between the operation power source and an input power source, from which the high-voltage device drains a conduction current. An operation voltage of the operation power source is detected, and, during a startup procedure, the conduction current is forwarded to charge the operation power source. A detected voltage representing an input voltage of the input power source is provided, and if the detected voltage is below a setting voltage, the conduction current is forwarded to a ground line instead of charging the operation power source.

Abstract: An apparatus is capable of improving the power factor of a power supply powered by a high power line and a ground power line. The apparatus comprises a line voltage detector and an ON time controller. The line voltage detector provides a scaled voltage to represent a line voltage of the high power line. The ON time controller has a valley voltage detector, which provides, in response to the scaled voltage, a valley representative representing a valley voltage of the line voltage. The ON time controller controls an ON time of a power switch in the power supply in response to the valley representative.