| 摘要 |
An electric arc welding machine has a housing, an arc-generating device, a current adjusting device and a controller. The arc-generating device is mounted in the housing to generate an electric arc. The current adjusting device has a rotatable shaft, a movable magnetic core and an induction coil. A motor is mounted in the housing to rotate the current adjusting device shaft through a transmission device. The controller has a remote switch unit and a receiver. The switch unit is used to send a control signal from a separate location far from the welding machine. The receiver is mounted on the housing and is electrically connected to the motor to receive the signal sent from the switch unit. The user can adjust the current applied to the arc-generating device at a separate location far from the welding machine. The use of the welding machine becomes more convenient.
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