How to KNOW if a transistor is NPN or PNP easily with a multimeter. In this basic electronics video tutorial we are going to see how we can know if a transistor is NPN or PNP, for this we are going to use the digital multimeter on diode scale, the first thing we are going to do is know what the base of the transistor is, in this In this case, the base can be on the right, left or in the center. After that, you have to know if the base is positive or negative. We will see that with the digital multimeter with the black and red test lead, already knowing everything. What we have left is to know which is the emitter and which is the collector, the highest reading is the emitter and the lowest reading is the collector and thus we already know if the transistor is NPN or PNP, since many times we do not have internet There is no way to enter the component's data sheet and we don't know what type of transistor it is. At the end of the video I have a surprise to give you regarding transistors, so that you don't have any doubts about how to check a transistor, yes. If you like the video, don't forget to leave your LIKE, thank you.