| 摘要 |
PROBLEM TO BE SOLVED: To identify the point of a short-circuit failure or an open failure in a parallel multistage semiconductor switch, without depending on the operation state thereof.SOLUTION: In a semiconductor switch including semiconductor small switches in a parallel multistage connection, each having a control terminal, the control terminal connects all semiconductor small switches once, and thereafter, separately opens and closes each semiconductor small switch, to thereby identify a semiconductor small switch having a short-circuit failure or an open failure.SELECTED DRAWING: Figure 1 |
