| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding equipment automatically correcting an output fluctuation and suppressing it when the output is fluctuated by an inner factor such as the variability, etc., of the circuit component parts of the welding equipment. SOLUTION: This is the welding equipment having a setting par setting a welding current, a current detection part observing the output value of the welding current at any time, a decision part receiving an output from the setting part and an output from the current detection part and a feedback circuit whose inputs are the set value of the welding current and the output value of the welding current, and is equipped with an output correction part inputting an offset value to an error amplifier circuit, in which a difference between the set value of the welding current and the output value of the welding current small to an error amplifier when a difference between the set value of the welding current and the output value of the welding current becomes a specific value or over.
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