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KX voltage reference assembled ✔️

🕑 Added 2018-08-17 14:20:08 +0000 UTC

Comments

Marco Reps

Great idea, will try!

Jason Pepas

I had a similar huge problem with EMI with my LTZ1000 circuits, which was not solved with a simple Hammond aluminum enclosure. Placing a common-mode choke on both input and output helped the most (three turns around a large ferrite tube). <a href="http://www.eevblog.com/forum/metrology/usa-calibration-club/msg1491958/" rel="nofollow noopener" target="_blank">http://www.eevblog.com/forum/metrology/usa-calibration-club/msg1491958/</a>#msg1491958

Marco Reps

They told us in uni all the time: If you have a question, don't hesitate to ask, there's always 20 other people in the room who are wondering about the same thing :) Yes, it is a super stable voltage source that should never change ideally. And yes, with proper shielding the 100µV noise can be reduced. µV noise is picked up on every metal object near power lines and electronic stuff in general

Jan Ka

It's me with the stupid questions again: I thought this would provide a known value like exactly 7 volt (just as example) that you could set your measuring equipment against. Or is that what it does - you "just" have to perfect shielding so it does not change on the last significant digit?

Marco Reps

the day after: <a href="https://www.youtube.com/watch?v=sz7Xg4mMm7g" rel="nofollow noopener" target="_blank">https://www.youtube.com/watch?v=sz7Xg4mMm7g</a> voltage reference has calmed down, so I've gotta be careful not to startle it

Holger P Kleinert

OK, you are first. You won :) I am almost sure that µV randomness is shielding related. You can also try to use a lead acid battery to supply the reference, I think this is what XDEV did.