An electrical assembly includes a motor, a first switch, a second switch, a third switch, and a fourth switch. The first switch may be connected to a first contact of the motor, and/or the second switch may be connected to a second contact of the motor. The third switch may be connected to the first switch, and/or the fourth switch may be connected to the second switch. The first switch, the second switch, the third switch, and/or the fourth switch may be configured to switch the electrical assembly between a first state, a second state, and/or a third state. If the electrical assembly is in the first state, at least one of the first contact and/or the second contact of the motor may be connected to an open circuit, and/or the motor may be configured to rotate freely.

An electrical assembly includes a motor, a first switch, a second switch, a third switch, and a fourth switch. The first switch may be connected to a first contact of the motor, and/or the second switch may be connected to a second contact of the motor. The third switch may be connected to the first switch, and/or the fourth switch may be connected to the second switch. The first switch, the second switch, the third switch, and/or the fourth switch may be configured to switch the electrical assembly between a first state, a second state, and/or a third state. If the electrical assembly is in the first state, at least one of the first contact and/or the second contact of the motor may be connected to an open circuit, and/or the motor may be configured to rotate freely.

Control over the operation of an electrically-controlled motor is supported by an interface circuit between the electrically-controlled motor and a near-field radio frequency communication controller. The interface circuit includes a first circuit that receives at least one control set point through a near-field radio frequency communication issued by the near-field radio frequency communication controller. A second circuit of the interface generates one or more electric signals in pulse width modulation based on the control set point.

A load control device includes: one H-bridge circuit; half-bridge circuits; a common connection circuit that connects one terminal of each of the plurality of loads commonly to one output terminal of the H-bridge circuit; individual connection circuits, each of which connects the other terminal of each of the plurality of loads to the other output terminal of the H-bridge circuit or any one of the output terminals of the plurality of half-bridge circuits; and an exclusive control unit that generates signals to be respectively supplied to the H-bridge circuit and the plurality of half-bridge circuits to exclusively control the plurality of loads.

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.

Lathe control systems and methods are described including stopping a motor prior to reversing direction as well as methods and systems that implement voltage and/or current protection thresholds.

Lathe control systems and methods are described including stopping a motor prior to reversing direction as well as methods and systems that implement voltage and/or current protection thresholds.

A magnetic sensor integrated circuit, a motor component and an application apparatus are provided. The integrated circuit includes: an input port, an output port, a magnetic field detection circuit and an output control circuit. The magnetic field detection circuit detects an external magnetic field and outputs magnetic field detection information. The output control circuit enables, at least based on the magnetic field detection information, the integrated circuit to switch at least between a first state, in which a current flows from the output port to an outside of the integrated circuit, and a second state, in which a current flows from the outside of the integrated circuit to the output port.

A motor control device includes: a driving unit that supplies a driving voltage to a motor so as to rotate the motor in a predetermined direction and in a direction opposite to the predetermined direction; a voltage detection unit that detects a voltage of a circuit including the driving unit; and a control unit that has the driving unit execute a voltage drop control that lowers a voltage of the circuit by supplying the driving voltage to the motor and stopping the supply of the driving voltage in a predetermined manner, in a case in which a voltage that is equal to or higher than a threshold voltage is detected by the voltage detection unit in a state in which the motor is not being driven.

An electric drive apparatus includes a DC motor for driving the electric device; a DC power source for outputting constant-voltage DC power to the DC motor; and a chopper for converting the constant-voltage DC power into variable-voltage DC power according to a driving signal and providing the variable-voltage DC power to the DC motor. The DC motor has 2j armature winding branches, each of which consists of m windings, 2jm commutator segments connected to the windings, and two brush sets respectively connected to two power line sets of the DC motor and in contact with the commutator segments.