WRITING EQUATIONS “BY INSPECTION”
FOR CIRCUITS WITH ONLY INDEPENDENT
SOURCES THE MATRIX IS ALWAYS SYMMETRIC
THE DIAGONAL ELEMENTS ARE POSITIVE
THE OFF-DIAGONAL ELEMENTS ARE NEGATIVE
Conductances connected to node 1
Conductances between 1 and 2
Conductances between 1 and 3
Conductances between 2 and 3
VALID ONLY FOR CIRCUITS
WITHOUT DEPENDENT
SOURCES