Abstract:
A centrifugal friction clutch includes a centrifugal part comprising a sleeve ring with centrifugal plates disposed thereon. A connecting member is attached around the centrifugal part. When the centrifugal part rotates with the rotary shaft, free ends of the centrifugal plates flare radially outwardly and abut against the connecting member, to cause the connecting member to rotate by a frictional force raised between the centrifugal part and the connecting member.
Abstract:
An actuator and its clutch are provided. The clutch includes a driving shaft; a mounting base fixed to the driving shaft for rotation with the driving shaft; a connecting base for connecting with a load, the connecting base including fingers surrounding an outer circumference of the driving shaft; resilient member including a resilient member, the resilient member having two ends respectively fixed to the mounting base and the connecting base, the resilient member surrounding an outer circumference of the connecting tabs. When a rotation speed of the driving shaft is greater than a rotation speed of the connecting base, an inner diameter of the resilient member gradually decreases so as to gradually couple the coupling portion with the driving shaft, such that the rotation speed of the coupling portion gradually approaches or reaches the rotation speed of the driving shaft. The present invention can provide a buffering function at the phase of the startup of the motor to avoid the motor startup failure and damage to the motor.
Abstract:
A magnetic sensor integrated circuit, a motor assembly and an application device are provided. The integrated circuit includes a housing, a semiconductor substrate, at least one input port and an output port, and an electronic circuit arranged on the semiconductor substrate. The electronic circuit includes a rectifying circuit, a magnetic field detection circuit configured to detect an external magnetic field and output magnetic field detection information, and an output control circuit connected to the rectifying circuit, and configured to control, at least based on the magnetic field detection information, the integrated circuit to operate in at least one of a first state in which a load current flows from the output port to an outside of the integrated circuit and a second state in which a load current flows from the outside of the integrated circuit to the output port. The load current flows through the rectifying circuit.
Abstract:
A motor driving circuit drives a motor. The motor driving circuit comprises a controllable bidirectional alternate current switch, a detection circuit. The controllable bidirectional alternate current switch is connected in series to a winding of the motor between two terminals of an alternate current power supply. The detection circuit is configured to detect a magnetic pole position of a rotor of the motor and output a magnetic pole position signal. And a switch state of the controllable bidirectional alternate current switch is controlled to determine a rotation direction of the motor according to a control signal and polarity of the alternate power supply.
Abstract:
A magnetic sensor integrated circuit, a motor assembly and an application device are provided. The magnetic sensor integrated circuit includes a magnetic field detection circuit and an output control circuit. The magnetic field detection circuit is configured to detect a magnetic field of a rotor of a motor and output magnetic field detection information. The output control circuit includes a first switch and a second switch. The first switch and the output port are connected in a first current path. The second switch and the output port are connected in a second current path having a direction opposite to that of the first current path. The first switch and the second switch are selectively turned on based on the magnetic field detection information, so as to control an energizing mode of the motor.
Abstract:
The present teaching relates to a magnetic sensor that comprises a housing, an input port and an output port, both extending from the housing and the input port being connected to an external alternating current (AC) power supply, and an electrical circuit. The electrical circuit comprises an output control circuit coupled with the output port and configured to be responsive to a magnetic induction signal to control the magnetic sensor to operate in a state in which a load current flows through the output port when a predetermined condition is satisfied, and operate in another state when the predetermined condition is not satisfied. The operating frequency of the magnetic sensor is positively proportional to the frequency of the external AC power supply.
Abstract:
A motor driving circuit drives a motor. The motor driving circuit includes a controllable bidirectional alternate current switch, a sensor, a rotation direction control circuit and a switch control circuit. The controllable bidirectional alternate current switch is connected to the motor and an alternate current power supply. The sensor detects a magnetic pole position of a rotor. The rotation direction control circuit controls a current flowing direction through a power supply terminal and a ground terminal of the sensor responsive to rotation direction set of the motor, to determine a phase of a detection signal outputted at an output terminal of the sensor. The switch control circuit controls a switch state of the controllable bidirectional alternate current switch to determine a rotation direction of the motor responsive to the detection signal and a polarity of the alternate current power supply.
Abstract:
The present teaching relates to a method/apparatus for a magnetic sensor. The apparatus of the magnetic sensor resides in a housing and includes an input port and an output port, both extending from the housing. The apparatus also includes an electrical circuit which comprises a magnetic field detecting circuit, configured to detect an external magnetic field and output a magnetic induction signal that is indicative of information related to the external magnetic field, an output control circuit coupled between the magnetic field detecting circuit and the output port, and a state control circuit coupled with the output control circuit and configured to determine whether a predetermined condition is satisfied and signal the same to the output control circuit. When the predetermined condition is satisfied, the state control circuit is at least responsive to the magnetic induction signal to enable the output control circuit to control the magnetic sensor to operate in at least one of a first state and a second state. In the first state, a load current flows in a first direction from the output port to outside of the magnetic sensor. In the second state, a load current flows in a second direction opposite of the first direction from outside of the magnetic sensor into the magnetic sensor via the output port. When the predetermined condition is not satisfied, the state control circuit enables the output control circuit to control the magnetic sensor to operate in a third state.
Abstract:
A motor component and an integrated circuit for driving a motor are provided. The integrated circuit includes a housing, pins extended out from the housing, and a switch control circuit disposed on a semiconductor substrate. The semiconductor substrate and the switch control circuit are packaged in the housing. The switch control circuit is configured to generate a control signal for controlling a bidirectional AC switch to be switched on or switched off, based on a magnetic field polarity of a rotor of the motor, to control an energized mode for the motor.
Abstract:
The present teaching relates to a magnetic sensor residing in a housing. The magnetic sensor includes an input port and an output port, both extending from the housing, wherein the input port is to be connected to an external alternating current (AC) power supply. The magnetic sensor also includes an electric circuit which comprises an output control circuit coupled with the output port and configured to be at least responsive to a magnetic induction signal and the external AC power supply to control the magnetic sensor to operate in a state in which a load current flows through the output port. The magnetic induction signal is indicative of at least one characteristic of an external magnetic field detected by the electrical circuit and the operating frequency of the magnetic sensor is positively proportional to the frequency of the external AC power supply.