[問題] 請問ngspice怎麼指定電晶體(QX)是pnp/npn?
如題,我第一次用spice,現有的電路是:
testq
v1 vin 0 5
v2 vc 0 5
q1 vin 1 2
r1 vc 1 100M
r2 2 0 1k
.dc v2 0 5 0.1
.print dc v(2)
結果一直拿到:
Warning: singular matrix: check nodes and
Trying gmin ........
Warning: Dynamic Gmin stepping failed
doAnalyses: iteration limit reached
弄不清楚發生了什麼事...
使用ubuntu 10.04預設的版本
我是對電晶體沒有指定model有點怪,可是也找不到可用的model
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