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  1. Are Vacuum Transistor the same thing as gallium nitride (GaN) transistors ?

    Technical & Advanced Car Audio Discussion
    These two seem to be the same on paper, but I'm not sure if they are the same. For reference to the Thread: vacuum transistor Gallium Nitride (GaN) transistor The reason I ask is that there seems to be 4 types of these transistors. I'm not sure if its an evolution of GaN or if it...