Products > Test Equipment
LM399 Voltage Reference, Fluke 289, Gossen 29S, RM303, AN870
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Trader:
Just For Fun !!!

Jumps J8 and J10 are a stable 10.004 kOhms resistance.

J7 and J12 can keep a relatively stable capacitance of 156uF.

(other combinations also work with different values) (turn it off first)
J-R:
If you want a budget reference you can rely on I would suggest the excellent VREF-01 from voltagestandard.com for only $31.  Calibrations are free for the first 2 years. 
faraday:
I tested this reference over 24h with 34410A and 33401A and so far is very stable.
                       
                           12H                   24H
34410A              9,85795             9,85795
34401a              9,85787             9,85784
Trader:

--- Quote from: faraday on February 04, 2021, 08:01:20 am ---I tested this reference over 24h with 34410A and 33401A and so far is very stable.
                       
                           12H                   24H
34410A              9,85795             9,85795
34401a              9,85787             9,85784

--- End quote ---

Awesome.  Test the Current too:

https://www.eevblog.com/forum/testgear/lm399-voltage-reference-fluke-289-gossen-29s-rm303-an870/msg3394242/#msg3394242
faraday:
Voltage / time  use BNC to banana cable
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