| 摘要 |
A welding power source for arc welding, which includes a welding transformer, which primary winding together with in-series connected input key, in parallel to which a capacitive reactor is connected, is connected to a network, a secondary winding of welding transformer with series-connected current sensor and a welding gap form a welding circuit, a control unit, which input is connected to the output of current sensor, and the output - to the control input of input key. The welding transformer is made with a magnetic shunt; the circuit comprises a welding rectifier, and the inputs of rectifier are connected to the output of secondary winding of the welding transformer, the first output of welding rectifier is connected to one terminal of the welding gap through a current sensor, the second input of welding rectifier is connected to the second terminal of welding gap, and the data output of current sensor is connected to the control unit input. |
