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Overview:
This design uses the single-chip AT89C2051 as the central control unit, and designs the circuit that automatically discriminates the triode pin and type. The circuit can quickly and automatically identify the tube type and pin of common small and medium power transistors, and the judgment result is displayed by the corresponding indicating circuit. The circuit is relatively simple, the test is convenient and fast, the test result is accurate, the cost is low, the function expandability is strong, and the upgrade is convenient.

In electronic technology, the triode is a very common component. The parameters of the three-stage tube are closely related to the measurement scheme and measurement results of many electrical parameters. Therefore, in the electronic design, the pins of the triode, The type of judgment and measurement is very important. There are many methods for measuring the triode pins. The commonly used ones in the laboratory are to measure the characteristics of the pins of the multimeter and the triode. However, due to the complicated relationship between the voltage and current between the pins of the triode, and the small size of the triode itself, The measurement brings great inconvenience, and there is currently no device for automatically determining the type and type of the triode tube. Therefore, it is especially important to design a circuit that automatically discriminates the triode pins and types.
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