Abstract: Disclosed are an apparatus for alarming an inverter status and an apparatus for analyzing a motor status in a mobile terminal. The apparatus for analyzing a motor status in a mobile terminal includes: a first recognition unit configured to recognize vibrations of a motor contacting thereto, and providing the vibrations to a controller; a second recognition unit configured to recognize sound of the motor, and providing the sound to the controller; and the controller configured to analyze a frequency from the vibrations and sound of the motor, to check a change of the vibrations, and thus to obtain an analysis result on a status of the motor.

Abstract: A terminal circuit in an inverter is disclosed, the terminal circuit including a photo-coupler configured to electrically insulate input/output signals, to receive, as input, an open collector output signal or a pulse output signal from a first port and to output the open collector output signal or the pulse output signal to a second port through a first output terminal, a transistor in which a base (B) terminal is connected to a second output terminal of the photo-coupler. And a bias resistor connected to a base (B) terminal of the transistor and to an emitter (E) terminal.

Abstract: A terminal circuit in an inverter is disclosed, the terminal circuit including a photo-coupler configured to electrically insulate input/output signals, to receive, as input, an open collector output signal or a pulse output signal from a first port and to output the open collector output signal or the pulse output signal to a second port through a first output terminal, a transistor in which a base (B) terminal is connected to a second output terminal of the photo-coupler. And a bias resistor connected to a base (B) terminal of the transistor and to an emitter (E) terminal.

Abstract: Disclosed are an apparatus for alarming an inverter status and an apparatus for analyzing a motor status in a mobile terminal. The apparatus for analyzing a motor status in a mobile terminal includes: a first recognition unit configured to recognize vibrations of a motor contacting thereto, and providing the vibrations to a controller; a second recognition unit configured to recognize sound of the motor, and providing the sound to the controller; and the controller configured to analyze a frequency from the vibrations and sound of the motor, to check a change of the vibrations, and thus to obtain an analysis result on a status of the motor.