I am just a person beginning in electronics on my own . I have been reading how transistors work. All explanations seem to talk about hole flow. But holes don’t really move. Can anyone explain what really happens in an NPN and a PNP transistor? I am thinking that there are two levels of electrons moving. Those that are free in the conduction band and hole movement really being electing movement in the valence band. If someone could explain both but especially PNPs that would be so great. Diagrams much appreciated.
January 05, 2019
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