Universal adapter for testing optocouplers

The invention discloses a universal adapter for testing optocouplers. The universal adapter is characterized by comprising a first adapter daughter board and a second adapter daughter board, wherein the first adapter daughter board is connected with a testing system and comprises a switching control circuit which is used for switching different test signals according to different types of detected optocouplers; the second adapter daughter board is connected with the first adapter daughter board and comprises a peripheral circuit needed in testing the detected optocoupler. The invention provides a universal adapter for testing optocouplers which can conduct test by switching suitable peripheral circuits to different types of optocouplers through the arrangement of a switching control circuit and the peripheral circuit needed by testing, so that one adapter is matched with various optocouplers, thus greatly reducing the number of adapters, bringing convenience for detection and management of detection persons, being capable of reducing repeated work for adapter developing persons and also reducing the development cost and shortening the development time.