4
: , .
() (KU = 104...106) (R = 104...109 ), , . , .
: 0 105...107 .
. , , , , . , .
.
2841, . 1.
2841:
1 ; 13 , 8 ; 10, 7 + - ; 3, 11 ; 5 ;, 15, 12 ; 2, 4, 14 .
2841:
KU | f = 1000 > 20000; |
R | f = 1000 > 5 ; |
R | f = 1000 < 200 ; |
, , , , , , , , , . (), (), ().
: , .
. 2 . R1 R2 , . , . KU = -R2/R1. - , KU , .
|
|
- , β = U/U .
- , - () . 3.
(f → 0), β → 1, R-2C-R. C-R/2-C , , β → 1. f0 = β → 0.
- . 4.
R1-R2 KUmax . - . R1 R .
f0, - (β = 0), , R1-R2, KUmax = -R2/R1. β 1, , .
(). , . 5, R3, R4. - - , : kβ ≥ 1 φ + φ = 0 (φ φ ) f0.
, .