Electronics > Beginners
Design your own SMU
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ggtx:
Hi all, just discovered this amazing forum :-) pleased to meet you all.
Since time I am curious to deep understand how a SMU  are done and designed, and I found the video from Dave where is opening the box of the Keithley 2400:
In another topic this user aims to build its own SMU: http://www.edaboard.com/thread364430.html with a reply discouraging him :-) Someone knows something like tutorials, thesis, datasheet or something more detailed about the idea?
Thank you in advanced. GTx.
Avacee:
Link doesn't work - remove the "," at the end.

Without comma:  http://www.edaboard.com/thread364430.html
helgel:
I've also played with the idea of designing a SMU. Found that it's way above my competence level... However, a few months ago I started to collect info, links etc. It's just unstructured info, but might be useful for others. At least I learned a lot.

https://poormanssmu.wordpress.com/research/
schmitt trigger:
Welcome to the forum,
any information about SMUs you find, please share it here.
exe:
I'm not building an SMU, but a PSU with some sinking capability and multiple (dual) current range and small output capacitance.

I'd say the first step to build an SMU is to define desired specs (voltage/current ranges, set/readback resolution and accuracy, bandwidth, protection, etc). As I see it, you just take a "regular" power supply and "upgrade" it until it meets your specs.

I wouldn't go down to microvolts and nanoamps for the first build. Also don't expect it have 5+digit accuracy. Reading voltnuts' articles helps a lot in understanding challenges.
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