LM399 Voltage Reference, Fluke 289, Gossen 29S, RM303, AN870

[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]

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

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

[faraday]

Amp 1,82541mA

[Trader]

This little reference is very stable not only for Voltage but also for Current. 

[klim]

Hi, I also own these chinese LM399 references.
Could it be true, that the input voltage does effect the output voltage that much?
Input: 12,00V Ref10V: 10,22701V
Input: 20,00V Ref10V: 10,22788V