| 摘要 |
PROBLEM TO BE SOLVED: To protect the load from momentary load increasing and continuous over-loading. SOLUTION: This aligner is featured in that it has a current detector (Rs, 41) to detect the overcurrent in the load to protect, a first decision circuit (A1) to output the first overcurrent signal when the current detector detects the momentary current exceeding the first threshold, a filter circuit (42) to filter the load current detected by the detector circuit, a second decision circuit (A2) to output the second overcurrent signal when the filtered load current produced by the filter circuit exceeds the second threshold, and a protective circuit (43) to protect the load depending on the first and second overcurrent signals. |
