PDFs of the rev B schematics:
30 Nov 2010: Posted updated control and power board schematics (minor value tweaks & note additions).
01 May 2010: Added updated schematic for control board. Differentiate schematic revisions by date to avoid confusion.
10 Jan 2010: Added updated schematics for control and power boards.
06 Sep 2009: Relocated Rev A info elsewhere.
05 Apr 2009: Updated with latest Rev B files.
23 Apr 2007: Updated with rev B relay board files.
22 Sep 2002: .PDF versions of original ORCAD files added (thanks Richard Bebbington & Chris Tromley)!
05 Aug 2002: Initial revision. Only .GIF images of paper copies available.