A gear box has a housing and a direct current motor inside of the housing. A rotatable output shaft extends through a wall of the housing and is rotatably driven by the motor via a gear train. The gear box can be used to dispense ice from a refrigerator/freezer. The motor drives the output shaft in one direction to dispense ice cubes. The motor also drives the output shaft in an opposite direction to crush ice and dispense the crushed ice. The gear box has a low-profile height. The gear train is located in front of a motor shaft of the motor and has a maximum height which does not exceed a maximum height of the motor. The motor shaft is perpendicular to the input gear of the gear train and to the output shaft of the gear box.

A gear box has a housing and a direct current motor inside of the housing. A rotatable output shaft extends through a wall of the housing and is rotatably driven by the motor via a gear train. The gear box can be used to dispense ice from a refrigerator/freezer. The motor drives the output shaft in one direction to dispense ice cubes. The motor also drives the output shaft in an opposite direction to crush ice and dispense the crushed ice. The gear box has a low-profile height. The gear train is located in front of a motor shaft of the motor and has a maximum height which does not exceed a maximum height of the motor. The motor shaft is perpendicular to the input gear of the gear train and to the output shaft of the gear box.

A packaging device includes a conveyance mechanism, a guide portion and a control portion. The control portion is configured to cause a first section of a film to be bonded to a base, cause the conveyance mechanism to convey the base toward a downstream side in a conveyance direction, move the guide portion along a movement path, cause the conveyance mechanism to convey the base toward the upstream side, cause a second section of the film to be bonded to the base, and cause the film to be moved in an opposite direction to a feeding direction at any time during a period after the first section is bonded to the base and before the second section is bonded to the base, the feeding direction being a direction in which the film is fed out when the base is conveyed.

A packaging device includes a conveyance mechanism, a guide portion and a control portion. The control portion is configured to cause a first section of a film to be bonded to a base, cause the conveyance mechanism to convey the base toward a downstream side in a conveyance direction, move the guide portion along a movement path, cause the conveyance mechanism to convey the base toward the upstream side, cause a second section of the film to be bonded to the base, and cause the film to be moved in an opposite direction to a feeding direction at any time during a period after the first section is bonded to the base and before the second section is bonded to the base, the feeding direction being a direction in which the film is fed out when the base is conveyed.

A motor control apparatus controlling current feeding and a rotational direction of a motor includes: four bridge-circuit switches between a high and low potential lines; two current feeding line switches connected through the motor between a first and second nodes in series to arrange two parasitic diodes facing each other; a pull-up resistor between the high potential line and a third node; a pull-down resistor between the low potential line and a fourth node to interpose the motor between the third and fourth nodes; a protective diode blocking current; and a fault diagnostic device having: a driver turning on or off the switches; and a voltage determinator determining suitability of a first and second voltages and performing initial fault diagnosis for at least one of the switches.

A handheld work apparatus having an electric motor and a drive circuit for the electric motor. The rotation movement of the motor is converted into an oscillating movement of the work tool via a gear mechanism. The motor is situated in a circuit including at least the motor and a switch for operating the motor. To reduce wear of the gear mechanism, a control unit for operating the motor in one of two directions of rotation is provided. The control unit independently determines a selected direction of rotation for a next operating cycle as a function of a control variable. When the motor is started, the motor is started by the control unit in the direction of rotation which is associated with a value of the control variable. The control variable changes before the motor is restarted for a following operating cycle.

A handheld work apparatus having an electric motor and a drive circuit for the electric motor. The rotation movement of the motor is converted into an oscillating movement of the work tool via a gear mechanism. The motor is situated in a circuit including at least the motor and a switch for operating the motor. To reduce wear of the gear mechanism, a control unit for operating the motor in one of two directions of rotation is provided. The control unit independently determines a selected direction of rotation for a next operating cycle as a function of a control variable. When the motor is started, the motor is started by the control unit in the direction of rotation which is associated with a value of the control variable. The control variable changes before the motor is restarted for a following operating cycle.

An electric tool includes a brushless motor and an output part, which is driven by the brushless motor and to which a tip tool is mounted, and a tumbler switch. The tumbler switch applies, to the control unit, a stop signal for stopping the brushless motor at a neutral position, a forward rotation signal for forward rotating the brushless motor by an operation in a first direction, and a reverse rotation signal for reversely rotating the brushless motor by an operation in a second direction.

An electric tool includes a brushless motor and an output part, which is driven by the brushless motor and to which a tip tool is mounted, and a tumbler switch. The tumbler switch applies, to the control unit, a stop signal for stopping the brushless motor at a neutral position, a forward rotation signal for forward rotating the brushless motor by an operation in a first direction, and a reverse rotation signal for reversely rotating the brushless motor by an operation in a second direction.

A directional and timing control circuit is provided. the circuit includes a main control chip, a power supply module to supply power to the main control chip, a driver module configured to receive a control command from the main control chip and to control a motor according to the control command, a Hall module configured to detect an operation direction of the motor and transmit an operation direction signal to the main control chip, and a zero-crossing detection module configured to detect a zero-crossing cycle of the alternating current power supply to thereby obtain a current utility frequency of the alternating current power supply as a timing frequency of the main control chip, the zero-crossing detection module including an input terminal connected to the alternating current power supply and an output terminal connected to a phase detection terminal of the main control chip.