RC-

, Zc = -j/ω, , - , , . R-, .

. 1.52. .

. . 1.52 , . ,

I = U/Z = U/R - (j/ωC) = U[R + j/ωC)]/R2 + 1/ω2C2.

( , .) , R

U = IZR = IR = U[R + (j/ω)R]/R2+1/ω2C2.


, U:

U = (UU*)1/2 = UR/[R2 + (1/ω2C2)]1/2.


:

U = UR1/(R1 + R2).


R - (. 1.53) . 1.54.

. 1.53.

. 1.54.


, , , :

U = UR/[R2 + (1/ω2C2)]1/2 = U2πƒRC/[1 + (2πƒRC)]1/2.


. 1.55. , 1.17 ; R, - R .

. 1.55. .


, (ω > 1/RC), . , . , , . . , . , 10 ( , ). -3 ( , )! RC - -3 :

ƒ3 = 1/2πRC.


, (ƒ = 0). - . , . , , , . R , ( 20 - 20 ) ( ).

. 1.56. - . . - . , 20%.


, . 1.57. 3 15,9 . , , 1 . . 1 ( ), .

. 1.57. . 1.58. .


. R (. 1.58), . , U = [1/1 + ω2R22)1/2] U. . 1.59. . -3 ƒ = 1/2πRC. . , - (550 - 800 ), .


. 1.59 .


1.21. .


. ( ) R ( , .. ). . . , R , - , R.


. 1.60. - , . 3 45 6 .


. 1.60 , - . , , - ( ). . , () , -. (): . 5, . , -20 / ( -6 /). , 0 ( ) 90 ( ), -3 45. R - . ≈6 0.1ƒ3 10ƒ3.


1.22. .


: - - . , - . (.. , ).


R - . R - , , , , . , , : . (U U) , : , , -3 . . , U = sinωt. , :

U = RC d/dt sinωt = ωRCcosωt.


U U, ωRC 1, .. RC 1/ω. , .


RC - , : -.


. , , ( ) . RL - . , , , ( ). , . ( ) . , , , ; , R - . - , .


, 1990- CMB ( ), 1974. , . FAQ .


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