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由于电子技术的广泛应用,对无线电基础元件——电阻、电容和电感的需要量日益增加。因此,对元件的分选速度的要求越来越快,对测试仪器的稳定性和精度要求也相应提高。目前国内生产的三用误差分选仪在性能方面显得不够理想,一定程度上影响了元件的产量和质量。南京长江有线电厂研制的SCF-5型三用误差分选仪具有稳定性好、精度高、分选速度快的特点,在实际应用中取得良好的效果。该仪器采用全硅管化的品体管线路,主要线路使用PNP型和NPN型硅管复合的方法,整机温度稳定性有了进一步提高,对一些单元线路也做了重大改进。本机装有自动合格显示电路,对提高分选速度、减轻劳动强度有显著效果。经有关单位实际使用,每班八小时测量电阻由9400只增加到15000只,提高效率60％。达到国内同类型产品的先进水平。仪器的外形如下图所示。
Due to the widespread use of electronic technology, there is a growing need for radio base components - resistors, capacitors and inductors. Therefore, the sorting speed of components faster and faster, the stability and accuracy of the test equipment requirements also increased accordingly. At present, the domestic production of three-use error sorter in the performance is not ideal, to a certain extent, affected the yield and quality of components. SCF-5 three-purpose error sorter developed by Nanjing Yangtze River Power Plant has the advantages of good stability, high precision and fast sorting speed, and has achieved good results in practical application. The instrument uses the entire silicon tube of the product line, the main line using PNP-type and NPN-type silicon composite pipe method, the whole temperature stability has been further improved for some of the unit lines have also made significant improvements. This machine is equipped with automatic qualified display circuit, to improve the sorting speed, reduce labor intensity have a significant effect. The actual use of the relevant units, measuring eight hours of class resistance increased from 9400 to 15000, improve the efficiency of 60%. To reach the domestic advanced level of the same type of products. The appearance of the instrument as shown below.