peter bunge wrote on 11/15/2019 3:27 PM:
No, I have not been working on the 576 curve tracer for 8 years but i have<good info snipped>
This is a long shot, but I wonder whether there's a thermal issue involved? If the
device's die is poorly attached to its header or if there's a poor thermal connection between
internal lead wires and the die attachment(s) that might cause an offset between the
increasing and decreasing base current.
If it's a leakage effect, I'd expect that germanium transistors (remember those<g>)
would show fat loops.