Here are some pictures I took with a 2N3055 at various step settings:
/g/TekScopes/album?id=79121
I'm not at all surprised - a 2N3055 is a power transistor with a very large junction area. So it has a
very high capacitance.
I'd have to look it up, but one of Tek's curve tracer manuals sets out a procedure to match the
looping with removing the transistor and putting a capacitor instead. When the capacitor looping
matches the transistor looping, the capacitor value is the same as Ccb of the transistor.
Craig
