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在电路维修或元器件选购中,常常遇到一些发生软击穿或反向耐压值不够的晶体管,仅用一只万用表来测试往往不够。这里介绍两款能快速检测晶体管的测试仪。这两款电路具有构造简单、容易制作、携带使用方便的特点,并且测试端输出电流很微弱,不会对被测元件造成任何损害。图1电路由两节5号干电池提供电源,闭合开关K,由V1、V2组成的音频多谐振荡器开始工作,音频
In the circuit repair or component purchase, often encounter some soft breakdown or reverse breakdown voltage is not enough transistors, only using a multimeter to test is often not enough. Here are two can quickly test the transistor tester. Both circuits have the advantages of simple structure, easy manufacture, easy to carry and use, and the output current of the test terminal is very weak, which will not cause any damage to the device under test. The circuit of Fig. 1 is provided by two No. 5 dry batteries and closed the switch K, the audio multivibrator composed of V1 and V2 starts to work, the audio frequency