, . , . .
- , R1, C1, R2, C2 . RC , :
..(jω)=1/[(1+R1/R2+C1/C2)+j(ωR1C2 --1/ω C1, R2)] . (10.7.)
(ω0) ,
ωR1 C2 --1/ω C1, R2. (10.8)
,
ω02=1/R1, C1, R2, C2. (10.9)
|..(jω)|=1/1+R1/R2+C1/C2. (10.10.)
. (f) .
:
f=1/2 π √R1, C1, R2, C2 []. (10.11)
R1 = R2= R; C1 = C2=.
f.=1/2πRC []. (10.12)
, . .10.1.
, .
() (u), ( ) (50 ). . . , , . . , . , + -.
(100) . . .
.. , . (R..) . :
|
|
|
u..=R../R , (10.13)
R..- ,
R- .
.
10.3. . .10.1.
.10.1. , .
:
-, ( ) ( ). .
- , , .
- , (R3=20hm R4=20hm) (1=10 nF 2=10 nF),
- , +15 15.
- R1 (20 hm), 30 hm R2 (20 hm)
, , ..
.. R2(20 hm). R1(20 hm). R1 , .
1. .
2. . , , . , .
3. , Eletronics Workbench Lab.10.ewb, , .
4. ( ).
5. . . , , (U, U) (..) . 10.1.
6. .
fo.. = 1/To.. .10.1.
6. R3 =R4=R 1,=2 =C .. fo.. = 1/To.. .
7. R3=R4 1=2 . R3,R4,.1,2. .10.1.
|
|
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.10.1.
| U | U | .. | f.. | .. | f.. | |
| . . | ||||||
| R3=R4=R= 1=2=C= | ||||||
| R3=R4= R= 1=2=C= | ||||||
| R3=R4=R= 1=2=C= | ||||||
| R3=R4=R= 1=2=C= | ||||||
| R3=R4=R= 1=2=C= |
10.5. . :
1. , , , , , , , .
2. .
3. , .
4. 10.1., .
5. . . . .
6. .
