loopgainprobe.sym

v {xschem version=3.4.5 file_version=1.2
}
G {}
K {type=source
format="@name @@a @@b sub_@name
.subckt sub_@name a b
Ii 0 x DC 0 AC 0
Vi x a DC 0 AC 1
Vnodebuffer b x 0
.ends loopgainprobe

.func tian_loop() \{1/(1-1/(2*(ac1.I(v.X999.Vi)*ac2.V(X999.x)-ac1.V(X999.x)*ac2.I(v.X999.Vi))+ac1.V(X999.x)+ac2.I(v.X999.Vi)))\}
"
template="name=x1"
}
V {}
S {}
E {}
L 4 10 0 30 0 {}
L 4 -70 0 -50 0 {}
L 4 -50 -10 -50 10 {}
L 4 -50 -10 10 -10 {}
L 4 10 -10 10 10 {}
L 4 -50 10 10 10 {}
B 5 27.5 -2.5 32.5 2.5 {name=b dir=inout}
B 5 -72.5 -2.5 -67.5 2.5 {name=a dir=inout}
T {@name} -45 -12 0 0 0.2 0.2 {}
T {b} 5 -4 0 1 0.2 0.2 {}
T {a} -45 -4 0 0 0.2 0.2 {}