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// Chapter 12_The junction field effect transistor
//Caption_Transconductance
//Ex_4//page 566
Ipi=0.522*10^-3
Vbi=0.814 //built in potential barrier
Vpo=4.35 //pinch off
VGS=0
gms_max=10^3*3*Ipi*(1-(Vbi/Vpo)^0.5)/Vpo
printf('The maximum transconductance is %1.3f mA/V',gms_max)
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