在维修家用电器或工业设备中的电子线路时,经常需要更换已经损坏的晶体三极管(以下简称三极管)。在很多情况下,由于找不到原型号的三极管,只能用其他型号三极管代换。笔者根据多年来的维修经验,谈谈三极管的代换技巧。 1.一般代换原则 (1)用相同材料(通常指锗、硅两种半导体材料)和相同极性(通常指PNP、NPN两种极性)的三极管代换。 In the repair of household appliances or industrial equipment in the electronic circuit, often need to replace the damaged transistor (hereinafter referred to as the transistor). In many cases, due to the original model can not find the transistor, the transistor can only be replaced with other models. The author based on years of maintenance experience, talk about transistor replacement techniques. 1. General substitution principle (1) The same material (usually germanium, silicon two kinds of semiconductor materials) and the same polarity (usually referred to as PNP, NPN polarity) of the transistor substitution.