Here I showed a couple of methods to implement a curve tracer using Function generator/AWG.

00:00 Introduction
01:12 Standalone Curve Tracing Circuitry
01:45 Method One
03:06 Method Two
05:26 Measurement Setup with Method One
07:43 NPN transistor Curve Tracing/Parameters Adjustment
13:25 N-Channel MOSFET Characteristics Curve
14:28 NPN transistor Characteristics Curve using Method Two/Conclusion

If you wanted to build a stand-alone curve tracer, you can check out the article I wrote a while back:
http://www.kerrywong.com/2013/09/02/yet-another-semiconductor-vi-curve-tracer/
http://www.kerrywong.com/2013/09/09/yet-another-semiconductor-vi-curve-tracer-ii/

Here are a couple of review videos of the Function Generator/AWG used in this video:
UNI-T UTG962E: https://youtu.be/ORkJGdViAhg
Hantek 2D72: https://youtu.be/NwT3XI2rf84

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