FIELD: electrical engineering; quality control in thyristor design and manufacture. SUBSTANCE: device has forward current pulse source, reverse voltage pulse source, forward voltage pulse source, first controlled switch, reverse control current pulse source, control unit, terminals for connecting thyristor under test, zero current sensor, second controlled switch, third controlled switch, current sensor, first time interval meter, second time interval meter, first storage unit, second storage unit, comparison unit, indicator. EFFECT: provision for automating thyristor quality control process.
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