ngspice/examples/inductive-systems/positive-definite-4.cir

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* indentify non-viable inductive systems ("altering" case)
* exercise "alter" and "indverbosity"
* (compile (concat "../../../w32/src/ngspice " buffer-file-name) t)
* (compile (concat "valgrind --track-origins=yes --leak-check=full --show-reachable=yes ../../../w32/src/ngspice " buffer-file-name) t)
V1 x 0 dc=0 ac=1
Rx x 1 1
R1 2 0 1k
R2 3 0 1k
L1 1 0 10u
L2 2 0 11u
L3 3 0 10u
k12 L1 L2 0
k23 L2 L3 0
k13 L1 L3 0
R101 101 0 1k
L101 101 0 1u
L102 102 0 2u
L103 103 0 3u
K1012 L101 L102 0.1
K1013 L101 L103 0.2
.AC LIN 5k 1k 10MEG
.control
listing e
echo coupling factors 0 0 0 -- ok
op
alter k12 0.96
alter k23 0.99
alter k13 0.98
echo coupling factors 0.96 0.98 0.98 -- ok
op
alter k12 0.96
alter k23 0.99
alter k13 0.9898988607
echo coupling factors 0.96 0.98 0.9898988607 -- ok
op
alter k12 0.96
alter k23 0.99
alter k13 0.9898988608
echo coupling factors 0.96 0.98 0.9898988608 -- not ok
op
alter k12 1
alter k23 1
alter k13 1
echo coupling factors 1 1 1 -- not ok
op
echo coupling factors 1.01 1 1 -- not ok
alter k12 1.01
set indverbosity = 2
echo "op with indverbosity=2"
op
set indverbosity = 1
echo "op with indverbosity=1"
op
set indverbosity = 0
echo "op with indverbosity=0"
op
destroy all
remcirc
quit
.endc
.END