Formulario e esercizi di esame svolti relativi al corso di Elettronica generale

Formulario

 −1 −1 −1 −3 −34 8 10−8 −20 −6( ) ( ) ( ) ( ) 2210 10 10 n 10 cm ( )σ σ σ= −10 Ωcm = −10 Ωcm = Ωcm = N 10 cm≈condutt isolanti Si Si−intrinseco −intrinseco Si1 L q hτ 2−31qn np n−34σ µ= =m 9.1 10 kg= ×h 6.63 10 JsR = ×µ λ= = =V RI= n inS 2m mvσ DD kTdn dp€ € € € p −19n € q 1.6 10 C= ×V 26mV= = = =j qn E qD qn E qDµ µ2 = + + −( )550cm / Vsµ =2 ( ) T1350cm / Vsµ = qµ µn n p pp dx dxn n p€€ € €€€ € €⎛ ⎞ ⎛ ⎞v v ⎛ ⎞2 ⎛ ⎞N N 2 N 1qSD n ε 2 1 1εL D D A AV V τn iη η =⎜ ⎟ ⎜ ⎟ V ln xi I e i e ϕ ϕ= == −1 = −1 ⎜ ⎟T T w ϕ= +⎜ ⎟€n n⎜ ⎟ ⎜ ⎟ T ns 2n qN N NL N +€ q N N⎝ ⎠€ ⎝ ⎠⎝ ⎠ ⎝ ⎠€ €i D A Dn A A D(v )⎛ ⎞ x2 [ ]−x mhc 1.24λ µn p( ) − [E 1.12eVVi ]=i q i Pφ E m= η λ µ=n x e = =(= )⎜ ⎟ T L( )n' x n' x e= gnp [ ]1.24 E eVλN p €⎝ ⎠ gA € € €€ € v 2⎛ ⎞ ⎛ ⎞ v2 2 BE ⎛ ⎞LqSD n qSw n bexnVn i i =i iβ 2= I i e β == = ⎜ ⎟⎜ ⎟ ⎜ ⎟ TC F B € FT B € Vww N 2 N ⎝ ⎠τ⎝ ⎠ ⎝ ⎠ €€ T€ B B €€ 2 v⎛ ⎞' '⎛ ⎞ C W1 µ v1 gsx =22 ox n( ) GSKi K v V v v i I 1( ) == − − ⎜ ⎟= +⎜ ⎟ i K v V= − ( )2 V V−nDS n GS TN DS DS DS DSSDS n GS TN L2⎝ ⎠ V€ 2 ⎝ ⎠ GS TNp€€€ € Vv v v I β v 2V 50mVA << ≈g v iβ=ce be ce C

F r =i g v i g r= + = − = = be Tm be F boc m be b m π Ir r r V gβ Co F o T mπv 1 € €€€ €( )ds ( )g K V Vi g v v 2 V V= − r= + << −=m n GS TNds m gs gs GS TNor Iλo DS €€ C€€ € € € oC =CB VCB€ 1€ +€ € ϕSC ε=o w€ 0€21 W ' 'C C WLC g == GS oxBE m2 D n€