# Signal Flow Graphs (SFG)

Masonâ€™s Gain Formula

Masonâ€™s Gain Formula

- This formula determines the overall transmittance (gain) denoted by T, and is given as where is forward path transmittance of path from a specified input node to an output node. In asserting , no node should be encountered more than once.

, the graph determinant = 1 - (sum of all individual loop gains) + (sum of gain products of all possible combinations of two non-tounching loops) - (sum of gain products of all possible combinations of three non-tounching loops) + ....

is the path factor associated with the concerned path & it involves all parts of SFG which are non-touching with forward path.