> > 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 stock, they are called > "econistors", 8G16, cost around 8$/? each and are distributed via a > british > company > > http://www.rhopointcomponents.com/components/resistors/precision-through-hole.html > > regards Frank > Frank, Is there a drawing or scan for the PCB for this circuit? Are the boards or completed assemblies available for purchase? The links to the taobao.com site in the blog are obviously dead; they lead to a department store type retail site. Dave M