AW: When is a transistor not a.............

[Haible Juergen]

	>.....I dont think it is going to act as a transistor, so I dont
think ther
	>will be much in the way of feedback......
	>not my field, though.....
	>anyone want to say what it looks like in simulation? (though a
rather
	>pathological case)

It acts like a diode when C is shorted to B, and it acts like
a diode when C is left open. The i(v) courve is different
in both cases, with both courves approximately being expo 
functions, of course. Both cases are quite different from
a 1N4148, too. This means that you need a different current
to get the same differential resistance (no problem), and
results in slightly different behaviour at the end of the useful
range. (I guess this is no problem either within the 3 decades
of audio.)

BTW, there is a great comparison of different diodes
in Bob Pease's "Troubleshooting" book, some transistors
and LEDs included.

JH.