[time-nuts] HP5065A C-field current voltage mod

[Poul-Henning Kamp]

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In message <1557706566.2101400.1441521513941.JavaMail.yahoo at mail.yahoo.com>, Pe
rry Sandeen via time-nuts writes:

> TheTL 431 is listed as a low noise shunt regulator.  It doesn’t
>measure temperature at all. Theonly noise spec I could find is about
>7 uV. A LM723 data sheet specified 2.5 uV noise. The REF 012A
>specifies 5 uVnoise. The first two are around 50 cents from Mouser. 
>The REF102A is about 10X more.

Stuff like that seldom happen by chance :-)

TL431 is amazing and very versatile, but it does not look like the
right solution to me in this case.

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