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.

Controlling a door latch of a cooking appliance is provided. A controller monitors motor current of a motor driving a door latch during a locking operation of a door of the cooking appliance. The controller deactivates the motor responsive to the motor current reaching a closed door threshold amount of current. The controller indicates the door being in a closed state responsive to the current draw over time matching a predefined current draw curve.

A control apparatus and method of a motor-driven power steering system are provided. The apparatus and method are capable of suppressing catch-up that occurs at a high steering speed even without using an expensive motor, thereby contributing to improving commercial value and reducing the manufacturing cost of a vehicle. The method includes determining a target steering speed using driver-steering input information and vehicle state information and determining the target steering speed corresponds to a condition for avoiding catch-up using the determined target steering speed. A current compensation value is then determined for reducing catch-up using the target steering speed in response to determining that is the target steering speed corresponds a condition for avoiding catch-up and motor current is compensated with the current compensation value.

A control apparatus and method of a motor-driven power steering system are provided. The apparatus and method are capable of suppressing catch-up that occurs at a high steering speed even without using an expensive motor, thereby contributing to improving commercial value and reducing the manufacturing cost of a vehicle. The method includes determining a target steering speed using driver-steering input information and vehicle state information and determining the target steering speed corresponds to a condition for avoiding catch-up using the determined target steering speed. A current compensation value is then determined for reducing catch-up using the target steering speed in response to determining that is the target steering speed corresponds a condition for avoiding catch-up and motor current is compensated with the current compensation value.

When providing alternating current (AC) power to operate AC powered devices such as power tools (such as drills, table saws, miter saws), equipment (such as lawn mowers), and consumer products (such as refrigerators, television, lights) without being tied to a fixed utility power supply typically requires a generator (such as an internal combustion engine based generator) or a battery powered inverter. In order to meet power and runtime needs for these devices, a battery powered inverter must be relatively large and expensive. This simple fact prohibits their use in many environments.

When providing alternating current (AC) power to operate AC powered devices such as power tools (such as drills, table saws, miter saws), equipment (such as lawn mowers), and consumer products (such as refrigerators, television, lights) without being tied to a fixed utility power supply typically requires a generator (such as an internal combustion engine based generator) or a battery powered inverter. In order to meet power and runtime needs for these devices, a battery powered inverter must be relatively large and expensive. This simple fact prohibits their use in many environments.

A control circuit for an electric motor includes low and high voltage subcircuits, and an isolation barrier therebetween. The low voltage subcircuit comprises a current controller configured to generate a driving signal, and a feedback loop. The high voltage subcircuit comprises a power bridge configured to output a current that drives the motor, a current sensor configured to measure the current, an analog front-end and an analog-to-digital converter (ADC). The analog front-end is configured to apply as a function of the measured current. The isolation barrier comprises an isolator having: first and second channels to pass respectively a clock signal and a control signal from the low to high voltage subcircuit to select the gain; and third and fourth channels to pass respectively an output signal of the ADC and a replica of the clock signal from the high to low voltage subcircuit.

An electronic device may include a first housing, a second housing configured to accommodate at least a part of the first housing and guide sliding movement of the first housing, a flexible display including a first display area coupled to the first housing and a second display area extending from the first display area, a gear disposed inside the second housing and configured to move the flexible display, a motor configured to rotate the gear, at least one sensor, and at least one processor. The at least one processor may be configured to identify a state of the electronic device including at least one of a battery current, a battery voltage, an internal consumption current, a battery level, or an electronic device temperature, based on information sensed through the at least one sensor, and control a speed of the motor or discontinue driving of the motor based on the state of the electronic device.

An electronic device may include a first housing, a second housing configured to accommodate at least a part of the first housing and guide sliding movement of the first housing, a flexible display including a first display area coupled to the first housing and a second display area extending from the first display area, a gear disposed inside the second housing and configured to move the flexible display, a motor configured to rotate the gear, at least one sensor, and at least one processor. The at least one processor may be configured to identify a state of the electronic device including at least one of a battery current, a battery voltage, an internal consumption current, a battery level, or an electronic device temperature, based on information sensed through the at least one sensor, and control a speed of the motor or discontinue driving of the motor based on the state of the electronic device.