| currents {ResistorArray} | R Documentation |
Calculates currents in an arbitrary resistor array
Description
Calculates currents in an arbitrary resistor array
Usage
currents(L, earth.node, input.node)
currents.matrix(L, earth.node, input.node)
Arguments
L |
Lagrangian conductance matrix |
earth.node |
Number of node that is earthed (that is, at a potential of zero) |
input.node |
Number of node that has current put into it (a notional one Amp) |
Details
The methods used by the two functions are different; see documentation for
resistance() for further details on input args 2 and 3
Value
Function currents() returns a three column matrix, each row of
which corresponds to an edge. The first two
columns show the node numbers specifying the edge, and the third shows
the current flowing along it.
Function current.matrix() uses a different method to return a
matrix of the same size as the conductance matrix L. Each
element of the returned matrix shows the current flowing along the
specified edge.
Note
This function is essentially a simplified version of
circuit().
Author(s)
Robin K. S. Hankin
Examples
currents(cube(),1,7)
currents.matrix(cube(),1,7)
#check above solution: print out the currents flowing into each node:
zapsmall(apply(currents.matrix(cube(),1,7),1,sum))