..
2
32.881
621.391
: , ..., ..
..,
: / .. .- : , 2011 - 24 .
: RC, , 230100
, 2011
", 230105.65 .
. .
. , .
, , , , . .
.
6
RC-
1. :
1.1 .
1.2 .
1.3 .
2. :
2.1 . , .
2.2 , .
2.3 .
2.4 .
3. :
|
|
R R R . R 7 . R ≈ 2 R . 12
(1; 1,2; 1,5; 2,2; 2,7; 3,3; 3,9; 4,7; 5,6; 6,8; 8,2).
= h 21
R = h11, .
|
|
3.2
f = 2000 . = 1/(2πfC). , < R;
4. , :
4.1 , . . ( 16), .
:
; (6.2)
; (6.3)
; (6.4)
; (6.5)
, (6.6)
U ;
U ;
I ;
I ;
P ;
P ;
U (R = ∞) ;
U (R ) R ≠ ∞;
I (R ) R ≠ ∞.
f.
, .
, .
.
, , , .
, ( ) .
:
;
, ;
, , .
17. U 1. U R 2 R . 1 . 2 .
R 1, R 2 R .
R . R , .
|
|
, .
, R , R .
5. :
5.1
5.1.1 EWB. . , 17.
" Sources ", " Basic ".
R , . 11 .
" Motorol 1 " " National 2 ".
. 11. .
R 1 | R 2 | R | C 1 μF | C 2 μF | C μF | ||
Q2N4400 | |||||||
Q2N2895 | 2.2 | ||||||
Q2N2896 | 9.1 | ||||||
394 | 9.1 | ||||||
BF258 | |||||||
BSS71 | |||||||
Q2N3500 | |||||||
Q2N3501 | |||||||
Q2N4014 | |||||||
Q2N4400 | |||||||
PN2369 | |||||||
PN2369A | 2.2 | ||||||
PN4274 | 9.1 | ||||||
PN4275 | 9.1 | ||||||
PN5134 | |||||||
PN5135 | |||||||
PN5136 | |||||||
PN5137 | |||||||
PN3642 | |||||||
PN3641 |
. .
. 1, 2, ( +).
1, 3, 4 .
V 2 , .
V 1 = 6 mV, 2000
(2 ). U .
4 U H, U = U H.
. , 4 0.8 1.5 .
. 17.
5.2
5.2.1 .
:
;
U = U / U , ( 4/ V 1) (U = V 1 = 6 mV).
;
I = I / I , ( 3/1).
;
= U· I.
;
|
|
r = V 1/ I ( V 1/1) [O].
.
[1] [2] .. , U .
4.
|
|
U ,
U I R , .
r ≈ R K.
( ).
Ux = (U )/ V 1 ( Ux > U).
2. , V2.
, .
2.
5.2.2
V1 . , 2 mV, (M4). 20 .
12 1 2.
. 12. .
U (V 1) [B] | ...10... | |||||||
U [B] (M4) | ||||||||
U [B] (M4) |
5.2.3 ƒ .
U (V 1) [mV] ( 12), 1.0 (4).
(V 1) , 0.707 . ( 100 ). .
2000 .
5.2.4
.
V 1 .
0 20 mV 2 mV, 3 12.
V 1 = 10 mV.
:
U = U / U ( 4/ V 1),
I ,
,
r = V 1/ I .
( [1] [2]).
U = U / V 1.
(4.8).
.
(V 1 12), 1.0 .
, 0.707 . .
6. :
6.1 12 U = F(V 1) .
V 1 .
V 1 = 10 Δ V 1 Δ U .
U = Δ U /Δ V 1,
U = Δ U /Δ V 1 ( 3 12).
, 5.2.1 5.2.4.
|
|
6.2 ( )
= 1/ U 1/ U, (4.10)
U , ( 5.2.4), U .
|
|
|
|
|
|
Ux = B·, U = ·, (4.12)
R R R ,
R = (R · R ) / (R + R ), = h 21 , 3.
Ux , 3.
6.4
, , V 2.
= V 2· I E, I E , 3.2 ( 2).
H , ,
H = U I U = 6 mV, 5.2.1.
.
13.
. 13. .
Ux | U | K I | r | r | ƒ | ||||
- | |||||||||
x |
7. :
1 .
2 .
3 .
4 .
5 .
8. :
1. 1, 2, .
2. .
3. .
4. .
5. , .
6. R 1 R 2.
7. . .
8. .
9.
10. .
7
.
2.1 ( , ).
2.2 , (1, 2, 4).