[volt-nuts] Homebrew LTZ1000 reference?

[J. L. Trantham]

This has been something that is on my very back burner of something to do.
I am interested in the result but I do not know if I have any time to devote
to it.

Joe

-----Original Message-----
From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
Behalf Of Mike S
Sent: Wednesday, November 18, 2009 6:15 PM
To: volt-nuts at febo.com
Subject: [volt-nuts] Homebrew LTZ1000 reference?


Anyone interested in working toward a reasonable cost, homebrew LTZ1000 
based reference?

Since the 1000 can be had for <$50, and seem to be the best available 
(other than JJ), this might be an interesting project.

The 1000 itself has great specs, most of the variability seems to come 
from the circuitry around it. One could go out and buy $100 zero-tempco 
resistor arrays, etc., but a more reasonably priced reference might be 
built by ovenizing things. But there may be better ideas.

The Chinese thread I pointed toward a couple of weeks ago seemed to be 
headed in this direction. Group buys/shared development/shared PCB 
costs, etc. There could even be an opportunity to do a group 
calibration of the end result.

I know there are folks here brighter than me in this matter, but I'm 
willing to contribute what I can.


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