| 摘要 |
PROBLEM TO BE SOLVED: To provide a withstand voltage property inspection device for an analogue circuit capable of inspecting withstand voltage property of a plurality of inspection elements of a circuit to be inspected without omitting any inspections with high accuracy in a short period. SOLUTION: Unit relay elements 1a-1f are inserted between electrodes of a searching transistor 25n, and the variation of currents of the electrodes are analyzed by the unit relay elements short circuited correspondingly to withstand voltage power supplies 2a-2f with a variation out of the tolerance range of at least one of terminal power supplies 5C, 5B, 5E. Operating state data are compared with withstand voltage reference data for detecting a unit relay meeting the withstand degradation condition to display the transistor 25n by flickering, a terminal whose voltage has changed in the terminal power supplies 5C, 5B, 5E is displayed in red, a connection line between transistors 25n identifiably displays flow-in and flow-out of current to the transistors 25n in yellow and purple respectively, and withstand voltage inspections of many transistors are automatically carried out with high accuracy in a short period, then transistors whose withstand voltage property degraded are displayed identifiably by an indicator 17 to clearly judge degradation conditions of the withstanding voltage property by the colors.
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