[sdiy] Trying to establish confidence in my test equipment

[Chris Manders]

Hi Tony

Hey, thanks for that.

I will knock up a little precision source for
calibration within the next few weeks I think.
If my maths is/are correct, that device will give 10
Volts +/- 1mV if the accuracy is 0.01%. Sounds
excellent and just what I need.

The other device I was looking at was an LM199 /
LM3999 which has internal temperature stabiliser and
is built in a thermally shielded package, although the
device specs confuse me at the moment.

'Initial tolerance on breakdown voltage' - 2%.
Err. . . that's not very good, is it?

Chris

P.S. I've just got to post this url. Not me who is
selling, but interesting to watch:

http://cgi.ebay.co.uk/Oakley-Modular-System_W0QQitemZ7396437537QQcategoryZ38071QQssPageNameZWDVWQQrdZ1QQcmdZViewItem


--- Oakley Sound <tonyallgood at btinternet.com> wrote:

> I use a AD588 for my precision source.
> 
> A few precision resistors, a couple of switches and
> one AD588 gives me 
> 0V, 1V or 5V. Its probably more accurate than my
> overly expensive 
> Tektronix DVM.
> 
> http://www.analog.com/en/prod/0,2877,AD588,00.html
> 
> I got mine as a sample many years ago. :-)
> 
> Tony
> 
> www.oakleysound.com
> 


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