, Z x R, . . 5.18. . 5.17, , R ( , , R ). Z x Z : Z x = R, Z = jXC = j /(2p fCR), f . KU = + j /(2p fCR).
f 0 | KU | ¥; , , | U | > . f ¥ | KU | 0. . 5.18 . .
, . 5.18 , , . (. 5.2) : K ¥, R x ¥. , I U I (t) = = C d UC (t)/d t. , , a:
. 5.18 |
I 1 = I 2 + I x ; I x = 0 ( R x ¥), I 2 = IC, : I 1 = C d UC (t)/d t; I 1 = IR = (U x f )/ R, UC = f U x. f 0 (. 5.2), U x/ R = C d U x/d t. , : U x = 1/(RC)ò U xd t.
, (. 5.18) , . , R , . (. 5.19, ), (. 5.19, ) (. 5.19, ) . , U x U x, ó . , KU = Z oc/ Z x ; , - (, ), U , f, ; ( ) -, KU = KU (f) . Z oc () Z x - (, ), , , (, ), .
|
|
. 5.19 |
(. . ), . , . , (. . ), .
, . 5.17 5.18 . , (R, L, ) , , ( , ), .
, : , .
, (. 9.1) . . , , . . , , .
, , ( . 9.10).