Re: Matched Transistors
There was a bit more to it than you thought.
I deliberately added the 1k2 series resistor to the base circuit (the generator output has a low Z), the reason being, as had been pointed out by Kalee20, the transistor's hfe affects the input impedance. So the series resistor helps form a divider at the input. This is also why in the test circuit, the emitter was bypassed with the electrolytic so the AC degenerative effects were minimized, as they would make one transistor specimen look more like another.
Also the drive voltage resulted in a fairly wide collector voltage swing using a good proportion of the transistors transfer function in that circuit, not just the small signal hfe on one part of the curve. The idea being to show any obvious differences in the two transistor specimens for both the static bias conditions and the dynamic performance, much better than a simple hfe test.
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