| 摘要 |
A power processing circuit of an AC/DC magnetic defect detector and a magnetic defect detector. The power processing circuit comprises a boosted circuit, a control circuit, and a voltage conversion circuit. The control circuit is connected to the boosted circuit and the voltage conversion circuit separately. The boosted circuit boosts an input power supply to a DC voltage, and then inputs the DC voltage to the voltage conversion circuit. The control circuit controls the voltage conversion circuit to convert the input DC voltage into an AC and a DC output in a time division manner. The power processing circuit and the magnetic defect detector integrate a DC defect detection working mode and an AC defect detection working mode, can comprehensively detect surface defects, near surface defects, and buried defects of a workpiece without changing a defect detector, and is simple to operate and convenient to use. |
