Nice graph! If we take a look at the 5.1 (maybe?) curve, it's "obvious" that it gives about 5.1 at 50 mA, and about 5.0 at 10 mA, but it's less clear what happens at 1 mA. Maybe 4.5 V or 4.7 V? And at 0.1 mA, it's so close to the axis that's impossible to tell from the graph...
Anyway, as you said, "if ain't broke...". And if so many people have tested the circuit in reality, there's not much to object.
Quote:
Originally Posted by dcb
Here's a picture, at lower currents, the zener voltage is (...)
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