5
1.1.
1.2.
1.3. .
1.4. .
2.
P=0.8*0.225=0.18 W
Un = 2*Uke=30 V
Ik0 = P/Uke = 0.18/15=0.012 A
Rk + Re = Uke/ Ik0 = 1250 Om
Re =115 Om; Rk = 10* Re =1150 Om
Uk0 = U0 + Ik0 * R =16.32 V
I = Ik / h21 = 2 mA
U ≈ 0.66
U = U + U=2.028 V
I = 10 * I=20 mA
R1 + R2 = U / I = 1500 Om
R2 = ((R1 + R2) * U) / U = 101.4 Om
R1 = (R1 + R2) - R2 = 1400 Om
4. :
1. ́ ́ , . . n-p-n p-n-p (n (negative) , p (positive) ). , , , , .
1.
.
, , .
, (, ..), (, . .). , . ( , ) (, )
́ (. modulator ) , () . , .
, , , . , - , .
n-p-n ,
n-p-n [3] () - () . (). , - , , ́ , , , [4]. () . , , , , (I=I + I).
|
|
h21
, . , .
h 12 = U m1/ U m2, I m1 = 0.
6. ?
R . , . . R . . , : . << R .. , C . R . .
7. ?
R 1, R 2 .
: