[volt-nuts] Short term "standard" cell?

Charles Steinmetz csteinmetz at yandex.com
Sun Mar 12 01:08:51 EST 2017


Brooke wrote:

> There are a few low cost voltage standards available where the maker has
> an HP 3458.  For example by Geller

Geller has been gone as a supplier since 2013 (most of the web site is 
still up as an archive, but he is no longer selling the voltage 
"references").

There are a few low-ish cost "references" or "standards" advertised on 
ebay.  An annotated schematic of one NOT to get (the Calibratory D-105 
"2ppm Voltage Reference") can be found here:

<http://www.ko4bb.com/getsimple/index.php?id=download&file=06_Misc_Test_Equipment/Calibratory_kaysert_D-105_10v_2ppm_voltage_reference_schematic_annotated.pdf>

Best regards,

Charles




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