8
: - - - .
LC- RLC-, . 8.1.
. 8.1
()
.
, w, - (), j(w) (), . - (), , , .
, . . : .
- - w :
(8.1)
, , - . , , . , (8.1), . .
, dx / d w ³ 0, jx (w) . , , . 8.1, , jx (w), . 8.2, , w > 0 : 3 , ; x (0) = 0 w = 0 w ¥.
- LC- , . 8.2, , . , , ; , , (Q ³ 1520), .
- , , . , - ,
|
|
, .
, :
1. -, . 8.1, ( , , , ), :
(8.2)
.
2. -, . 8.1, ,
(8.3)
, , R, ( ), , ; (8.3) - .
. . ݻ . . 8. , . 8.3, , . 8.1, . U , U , .
, . R1=1 (8.4)
.8.3
1. - .
.8.1, , .8.4. (, ) f = 1 I m = 0,05 . Bode Plotter XBP1.
|
, , Bode Plotter XBP1 U UR 1, R 1. . 8.3 U Out U = U + UR 1, , R 1 .
(2) Magnitude (I =2kHz, F =10kHz, Lin), (Lin, I =0, F =50). , , , .
F = 4kHz , (U/UR1) . F =10kHz . .8.1. [Phase] j (f). j (f) . .
, .
8.1
f, | U / UR1, | j, | | Z |, |
:
|
|
1. , , ?
2. f = 0, f = ¥, f = f 1, f 2?
2. RLC- ,
.
2 , . 8.5. , (8.3) .
|
, . 1. 89 , (Log, I =100Hz, F =2MHz) (Lin, I =0, F =15), .
(I = -180, F =180). .
, . , j (, j = 20, 40 . .). , . , , .
3. (, , ) ? ?
3. RLC-,
.
, . 2, .
:
4. - , (, ) ?
5. , f = 0 f = ¥?
, . , , , , , , .