[volt-nuts] Homebrew LTZ1000 reference?

[Eric Garner]

you might consider using the vref board out of the 3458a ala
http://maxmcarter.com/vref/ (mentioned here previously).
It already has the LTZ1000 and nice, low tempco parts on it, all it
needs is a power supply. I bought one and have been running it on  a
supply built from stuff lying around and has been pretty stable, at
least according to my 3457a. i've been meaning to build a nicer supply
for it, but have held off until i get a 3458a or a keithly 2002 or
something that i can actually see if there's any improvement with
various supply configurations.

-eric


On Thu, Nov 19, 2009 at 7:47 AM,  <gsteinba52 at aol.com> wrote:
>         Linear Technology has an application note on this very subject:
>
> cds.linear.com/docs/Application%20Note/an86f.pdf
>
> Devour the whole app note - the analog information was written by Jim Williams (who, as they say,
> has forgotten more about analog electronics than I will ever know...). A great read!
>
> Jerry Steinback
>
>
>
>
>
>
> &gt; Mike S wrote:
> &gt;
> &gt; Anyone interested in working toward a reasonable cost, homebrew LTZ1000
> &gt; based reference?
> &gt;
> &gt; Since the 1000 can be had for &lt;$50, and seem to be the best available
> &gt; (other than JJ), this might be an interesting project.
> &gt;
> &gt; The 1000 itself has great specs, most of the variability seems to come
> &gt; from the circuitry around it. One could go out and buy $100 zero-tempco
> &gt; resistor arrays, etc., but a more reasonably priced reference might be
> &gt; built by ovenizing things. But there may be better ideas.
>
> &gt; The Chinese thread I pointed toward a couple of weeks ago seemed to be
> &gt; headed in this direction. Group buys/shared development/shared PCB
> &gt; costs, etc. There could even be an opportunity to do a group
> &gt; calibration of the end result.
>
> &gt; I know there are folks here brighter than me in this matter, but I'm
> &gt; willing to contribute what I can.
>
>
>
>
>
>
>
> _______________________________________________
> volt-nuts mailing list -- volt-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
> and follow the instructions there.
>



-- 
--Eric
_________________________________________
Eric Garner