(. 6.5.1) I, U C I 900, U L 900. ( 1800).
. 6.5.1
, (. 6.5.2), (. 6.5.3). U L U , L C . . (. 6.5.4).
. 6.5.2 | . 6.5.3 | . 6.5.4 |
X = XL XC
. L C .
XL = w L, XC = 1 / w C, w0 :
w0 L 1 / w0 C = 0,
.
, . UL UC ( !) .
I U, UC, UL w = w0, w< w0 w> w0. .
(. 6.5.5), 2 500 . 300 , ( ).
. 6.5.5
, . . . .
. 6.5.1 f= f0 f1 0,75 f0 f21,25 f0.
6.5.1
f, | I, | U, B | UL, B | UC, B |
f0 = | ||||
f1 = | ||||
f2 = |
|
|
. 6.5.6 .
. 6.5.6
6.6. .
(. 6.6.1) U, .
. 6.6.1
I I C ( ) I L ( ), I L U 900, I C 900.
I C I L (1800) . (. 6.6.2 - 4).
I C = I L , ( . 6.6.2)
. 6.6.2 | . 6.6.3 | . 6.6.4 |
IC > IL, .. , I U 900 (. 6.6.3).
IC < IL, .. , I U 900 (. 6.6.4).
.
B = BL BC .
,
, , ,
.
. , . , IL IC .
U I, IC IL w = w0, w< w0 w> w0. .
(. 6.6.5), : U = 7 , f = 500 . 300 , ( ).
. 6.6.5
, I. . . .
. 6.6.1 f = f0, f10,75 f0 f21,25 f0.
|
|
6.6.1
f, | U, B | I, | IL, | IC, |
f0 = | ||||
f1 = | ||||
f2 = |
. 6.6.6 .
. 6.6.6
6.7.
. , , .
(.6.7.1) , , :
.
. 6.7.1.
, (.6.7.1):
.6.7.2. w0=1/√(LC):
XL (w0)=XC (w0)= √(L/C)= r
,
r / R= Q
.6.7.2 , :
I(w)= U/ Z (w); UL(w)= w LI(w); UC= I/ w C; φ= arctg[ w L-1/(w CR)].
Q>1, UL(w0) UC(w0) Q .
. 6.7.2
w<w0 ( j), w=w0 - , w>w0 - ( ).
- R(w), X(w), Z(w), I(w), UL(w), UC(w) j(w) - Q >1.
- , (.6.7.3).
.
R= .
, :
f0=1/2 p√(LC)= ; r=√(L/ C)= ; Q= r/ R=.
- (.6.7.3), R . R (Q>1). : U=5 B, f=f0.
. 6.7.3.
- , . :
f0= .
f0= .
- 0,2 2 , .6.7.1 . 6.7.4. 6.7.5. Q>1.
- R=100330 , , UL UC .
6.7.1.
f, | R, | X, | Z, | I, | UC, | URL, | j, |
|
|
6.8.
(.6.8.1) , , :
BL(w)=1/ ωL; BC(w)= ωC; B(w)= BL(w)- BC(w);
. 6.8.1.
, (.6.8.1):
Y(w)=√(G2+ B2).
.6.8.2.
w0=1/√(LC):
BL(w0)=BC(w0)= √(C/L)= g.
,
g / G= Q
.
:
I(w)= UY (w); IL(w)= U/ w L; IC= U w C, ILC= UB(w).
w=w0 I, , IR, IL (. . 6.8.2). , .
(. 6.8.2.) :
φ= arctg[(1/ w L- w C)/ G].
w<w0 ( j), w=w0 - , w>w0 - ( ). Q>1, IL(w0) IC(w0) I Q .
. 6.8.2
. 6.8.2 j(w) Z(w) X(w) . B (. ):
Z(w)=1/ Y(w)=1/ √ (G2+ B2);
X(w)= B/(G2+ B2).
.
, , (G=0):
X(w)=1/ B; Z(w)=1/| B|.
X(w) Z(w) (. .6.8.2).
c - I(w), IL(w), IC(w), X(w), Z(w) j(w).
- (.6.8.3), . W=300 , .
U=5B, f=500.
|
|
:
XL= U/ IL= ;
L= XL/(2 p f)= ;
f0=1/2 p √(LC)= .
. 6.8.3.
- I , .. :
f0= .
f0= .
- 0,2 1 , .6.8.1 . 6.8.4. 6.8.5. .
:
1. , , . , .
2. , .
f, | X, | Z, | I, | IC, | IL, | j, |
6.7.1.