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电子管在电子产品上的应用正逐步被晶体管和集成电路所替代。但目前市场上还有许多积压和旧设备上拆下的电子管,其实电子管在高保真音频电路中还是大有作为的,电被许多无线电爱好者所青睐。对于许多型号不清,外形相同的电子管,业余条件下可以观察内部结构和用万用表测量等方法来识别,做到物尽其用。 常用的电子管外形结构有小七脚、小九脚(俗称北京管)和大八脚(俗称南京管)等几种。最多的还是小七脚、小九脚结构的电子管。本文以外型尺寸相同的分类加以说明。
The application of electronic tubes in electronic products is gradually being replaced by transistors and integrated circuits. However, there are still many backlogs on the market and the tubes removed from the old equipment. In fact, tubes are still playing a role in high-fidelity audio circuits. Electricity is favored by many radio enthusiasts. For many models are unclear, the same shape of the tube, amateur conditions can observe the internal structure and the use of multimeter measurement methods to identify, to make the best use. Common tube shape and structure of a small seven feet, a small nine feet (commonly known as Beijing tube) and the big eight feet (commonly known as Nanjing tube) and several other. The most is still a small seven feet, a small nine-foot structure of the tube. This article describes the same size classification.