Circuit simulation matrices from Tim Lehner, IBM EDA. Added March, 2006. The dc* matrices are DC operating point problems, and the trans* matrices are transient simluations. All come from the same circuit. As in most circuit matrices, these matrices are permutable into block triangular form, and the also have a few dense rows/columns (normally from voltage and current sources). Tim Lehner Circuit Simulation, EDA IBM Systems and Technology Group USmail: IBM Corporation, M/S 2A1, Bldg 334, 2070 Route 52, Hopewell Junction, NY 12533