From: Dave M dgmin...@mediacombb.net
To: volt-nuts@febo.com
Subject: Re: [volt-nuts] Resistors for LTZ1000A circuit
Message-ID: 8ED467935EBC4B82B5DABC46445D8054@D77M7BF1
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I've described the theoretical
Hello Jan,
some shameless self-plugging:
My Website has a ZIP with the eagle schematic and layout of one of the
Circuits discussed on this eevblog thread: I am the babysitter.
http://dg3hda.primeintrag.org/doku.php?id=ltz1000a
Hendrik
Am 11.12.2013 20:43, schrieb Jan Fredriksson:
Hi
I've described the theoretical background and measurements on my
LTZ1000 references (2 on my own, one identical of another volt-nut) parts
#1
-#6, starting here:
http://www.eevblog.com/forum/projects/ultra-precision-reference-ltz1000/165/
Those 0.1% wirewound resistors, are available from
Hello Randy,
another source could be the UPW50 or UPW25 series of wire wound resistors.
Some values are available at RS-Components.
the 70K = 50K + 20K
the 12,5K = 10K + 2K + 500R (50 degrees setpoint temperature)
another possibility is the trimming service of DigiKey for VSMP resistors.
Frank Stellmach wrote:
Dave,
well the schematic is the same as in the LT specification.
My PCB is a prototype, and I would not like to publish it, because it
contains several bugs.
One one those bugs led to the first change of the initial LT
specification, i.e. I discovered the parasitic diode