* Kathleen Williams, ps. #11, ece 202
* Student ID# 0194633

* subcircuit opamp_.cir - dkg f00
.subckt opamp_ v_plus v_minus v_out
*
* An "almost ideal" opamp  
* v_plus  = "+" terminal input
* v_minus = "-" terminal input
* v_out   = output terminal

Rin  v_plus v_minus 2.e+5
Eamp v_1 0 v_plus v_minus 2.e+5
Rout v_1 v_out 75
.ends


v1 1 0 dc 0.1
r1 1 2 1000
r2 2 3 10000
x1 0 2 3 opamp_
r3 3 4 500
x2 0 4 5 opamp_
r4 4 5 20000
r5 5 0 100

* control statements to supress output:
.options nopage, nobias
* control statement to do d.c analysis:
.dc v1 list 1
* print resultant outputs:
.print dc i(r5), V(5,0)
.end