In this article, our team will introduce you what the PNP transistor and NPN transistor with 9012/9013 transistor. The differences between PNP transistors and NPN transistors.
In this article, we have firstly understood the general classification method and the main typical types of transistors?. Then the test methods of crystal diodes and crystal transistors, including the means of performance judgment and electrode determination, were introduced. Finally, the test methods for common and high-power Darlington transistors are discussed.