A blower in one aspect of the present disclosure includes: a housing including a first discharge port; a motor in the housing; a fan in the housing; an attachment fitting portion; and a motor drive circuit. The attachment fitting portion is configured to detachably attach, to the first discharge port, an attachment including a second discharge port. The motor drive circuit (i) delivers a designated power to the motor and (ii) performs a constant power control that maintains a magnitude of an electric power delivered to the motor at a magnitude of the designated power.

A blower in one aspect of the present disclosure includes: a housing including a first discharge port; a motor in the housing; a fan in the housing; an attachment fitting portion; and a motor drive circuit. The attachment fitting portion is configured to detachably attach, to the first discharge port, an attachment including a second discharge port. The motor drive circuit (i) delivers a designated power to the motor and (ii) performs a constant power control that maintains a magnitude of an electric power delivered to the motor at a magnitude of the designated power.

A power tool including a housing, a trigger, a motor coupled to an output member, and a motor drive circuit coupled to the motor. The power tool further includes a motor controller coupled to the motor drive circuit. The motor control circuit is configured to detect a position change of the trigger, determine one or more parameters associated with the position change, and generate an output based on the one or more determined parameters and a variable trigger mapping function. The output is then output to the motor drive circuit.

A power tool including a housing, a trigger, a motor coupled to an output member, and a motor drive circuit coupled to the motor. The power tool further includes a motor controller coupled to the motor drive circuit. The motor control circuit is configured to detect a position change of the trigger, determine one or more parameters associated with the position change, and generate an output based on the one or more determined parameters and a variable trigger mapping function. The output is then output to the motor drive circuit.

A power tool includes a housing, a motor disposed in the housing, an output spindle configured to be driven by the motor, an input switch, and a controller configured to control power being delivered to the motor. The controller is operable in one of: (a) a normal mode where the controller causes continuous electric power to be delivered to the motor during actuation of the input switch in a first range of positions; and (b) a feathering mode where the controller causes discontinuous electric power to be delivered to the motor during actuation of the input switch in a second range of positions that is different from the first range of positions motor to simulate feathering the input switch.

The present disclosure provides a rotatable drawing board and a control method. The rotatable drawing board includes a main case and an axially rotatable drawing board body arranged on a front surface of the main case; a control circuit board and a drive motor for driving the drawing board body to axially rotate are arranged inside the main case; an output shaft of the drive motor is connected to a central portion of the drawing board body, or a supporting rod extending into the main case is arranged at a central portion of a back surface of the drawing board body; the output shaft of the drive motor is rotatably movably connected to the supporting rod to drive the supporting rod and the drawing board body to axially rotate; and the drive motor is electrically connected to the control circuit board.

The present disclosure provides a rotatable drawing board and a control method. The rotatable drawing board includes a main case and an axially rotatable drawing board body arranged on a front surface of the main case; a control circuit board and a drive motor for driving the drawing board body to axially rotate are arranged inside the main case; an output shaft of the drive motor is connected to a central portion of the drawing board body, or a supporting rod extending into the main case is arranged at a central portion of a back surface of the drawing board body; the output shaft of the drive motor is rotatably movably connected to the supporting rod to drive the supporting rod and the drawing board body to axially rotate; and the drive motor is electrically connected to the control circuit board.

A speed control assembly for an appliance includes a bracket and a cam that is slidably coupled with the bracket and has an engagement edge. A lever is operably coupled with the cam and is configured to move the cam along the bracket. A slider is fixedly coupled with the bracket and a magnet is disposed adjacent the engagement edge. A ball bearing that is in magnetic communication with the magnet is configured to be selectively engaged with one of a plurality of retention spaces that are defined by the engagement edge of the cam. A sensor is configured to detect a position of the magnet.

A speed control assembly for an appliance includes a bracket and a cam that is slidably coupled with the bracket and has an engagement edge. A lever is operably coupled with the cam and is configured to move the cam along the bracket. A slider is fixedly coupled with the bracket and a magnet is disposed adjacent the engagement edge. A ball bearing that is in magnetic communication with the magnet is configured to be selectively engaged with one of a plurality of retention spaces that are defined by the engagement edge of the cam. A sensor is configured to detect a position of the magnet.

A speed control assembly for an appliance includes a bracket. The bracket is aligned with a slot defined by an appliance body. A cam is slidably coupled with the bracket and has an engagement edge positioned at an angle relative to the bracket. A lever is operably coupled with the cam and extends through the slot. The lever is configured to move the cam along the bracket. A slider is fixedly coupled with the bracket. A magnet housing is operably coupled with the slider and is configured to house a magnet. The magnet housing defines a recess. A ball bearing is magnetically coupled with the magnet housing and is positioned within the recess. The ball bearing is configured to be selectively engaged with the engagement edge of the cam. A Hall-effect sensor configured to detect the position of the magnet.