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lab4a - band-gap 
.options list node post 
.op 
vcc vcc 0 10 
q1 3 bg 1 labn m=8 
q2 5 bg 2 labn 
q3 3 4 vcc labp  
q4 4 4 vcc labp 
q5 5 3 4 labp 
q6 vcc 5 out labn m=10 
r1 1 2 100 
r2 2 0 560 
r3 out bg 3k 
r4 bg 0 1k 
.model labn npn (is=2.3673e-15 bf=280.92203 br=20 rb=69.94226 re=0.22569 
+ rc=3e-2 cjc=3.4247e-12 cje=6.7441e-12) 
.model labp pnp (is=5.712e-15 bf=223.01917 br=8.74727 re=8.1691e-2 
+ rb=136.67118 cjc=5.9499e-12 cje=7.9204e-12) 
.end