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Kha hc LTH mn Vt l (KIT1) Thy ng Vit Hng (0985.074.831) Facebook: LyHung95
Tham gia kha hc LTH KIT-1 v Luyn gii mn Vt l ti Hocmai.vn t kt qu cao nht trong k TSH nm 2014!
TNG HP CNG THC TH TRONG IN XOAY CHIU BIN THIN CNG SUT THEO , L, C, R
Cc cc tr
Gi tr cc tr th minh ha Pha ca u v i
P theo RZZR
URIPCL
22
22
)( +==
Pmax khi cng hng: rR
UPLC +
==
2
max
20 ;
1 ;
0=
Tn ti 21, cng sut 21 PP = (hoc 21 II = ).
Khi 2021 =
2121 coscos ==
P theo C.
Pmax khi cng hng:
rRUP
LC
+==
2
max20 ;1
; 0=
Tn ti 21,CC cng sut 21 PP = (hoc 21 II = ). Khi :
02121
21120 CCC
ZZZ CCC =+=+
2121 coscos ==
P theo L Pmax khi cng hng:
rRUP
CL
+==
2
max20 ;1
; 0=
Tn ti 21, LL cng sut 21 PP = (hoc 21 II = ) .
Khi : 02121 22 0 LLLZZZ LLL =+=+
2121 coscos ==
P theo R Pmax theo BT Csi
)(22; 022
max0rR
UZZ
UPZZrRCL
CL +=
==+
4pi =
21, RR cng sut 21 PP = . Khi :
2021 )())(( rRrRrR +=++
rRRUPP
221
2
21 ++==
2121 cossin2pi ==+
Kha hc LTH mn Vt l (KIT1) Thy ng Vit Hng (0985.074.831) Facebook: LyHung95
Tham gia kha hc LTH KIT-1 v Luyn gii mn Vt l ti Hocmai.vn t kt qu cao nht trong k TSH nm 2014!
PR theo R
PRmax theo BT Csi
( )
)(22
max
22
rRUP
ZZrR CL
+=
+=
21, RR cng sut 21 RR PP = . Khi :
22221 )( RZZrRR CL =+=
rRRUPP RR 221
2
21 ++==
BIN THIN UR THEO , L, C, R
Cc cc tr
Gi tr cc i Tn ti hai gi tr Pha ca u v i
UR theo ( )
RZZR
URZURIU
CL
R22
.
+===
URmax khi cng hng: UULC R== max
20 ;
1 ;
0= Khi c cng hng th URmax = U khng ph thuc R
Tn ti hai gi tr 21, 21 RR UU = (hoc 21 II = ) .
Khi : 2021 =
2121 coscos ==
UR theo C.
URmax khi cng hng: UULC R== max
20 ;
1 ;
0= Khi c cng hng th URmax = U khng ph thuc R
Tn ti hai gi tr 21,CC 21 RR UU = (hoc 21 II = ) .
Khi :
02121
21120 CCC
ZZZ CCC =+=+
2121 coscos == UR theo L URmax khi cng hng: UULC R
== max
20 ;
1 ;
0= Khi c cng hng th URmax = U khng ph thuc R
Tn ti hai gi tr 21, LL 21 RR UU = (hoc 21 II = ) .
Khi : 02121 22 0 LLLZZZ LLL =+=+
2121 coscos ==
Kha hc LTH mn Vt l (KIT1) Thy ng Vit Hng (0985.074.831) Facebook: LyHung95
Tham gia kha hc LTH KIT-1 v Luyn gii mn Vt l ti Hocmai.vn t kt qu cao nht trong k TSH nm 2014!
UR theo R ( )
( )2
2
22
1
.
RZZ
U
RZZR
URZURIU
CL
CL
R
+
=
+===
URmax khi mu s min R UU R
URmin khi mu s max 0 R 0 RU
Khng c 2 gi tr UR bng nhau
Ghi nh: P, I v UR bin thin theo L, C, hon ton tng t nhau BIN THIN UL THEO R, L, C,
Cc cc tr
Gi tr cc tr th minh ha Tn ti hai gi tr
UL theo R
( ) LCLLLL Z
ZZR
UZZUZIU
22.
+===
ULmax khi mu s min:
LCL
L ZZZUUR
= 0 ; 2pi +=
ULmin khi mu s max: 0 LUR
Khng c hai gi tr no ca R cho UL bng nhau
UL theo C.
ULmax khi cng hng: RZUU
LC LR == max20 ;
1
;
0= 00 LC UZC
22
.0L
LLC
ZRZUUZC+
Kha hc LTH mn Vt l (KIT1) Thy ng Vit Hng (0985.074.831) Facebook: LyHung95
Tham gia kha hc LTH KIT-1 v Luyn gii mn Vt l ti Hocmai.vn t kt qu cao nht trong k TSH nm 2014!
UL theo L ( )
1121)(
.
222
22
++
=
+===
LC
LC
L
CL
LLL
ZZ
ZZR
U
ZZZR
UZZUZIU
ULmax khi: RZRU
UZ
ZRZ CLC
CL
22
max
22
;+
=
+= ;
2pi =+ RC 2222 CRL UUUU ++=
Tn ti hai gi tr 21, LL 21 LL UU = . Khi :
021
211LLL
=+
UL theo
11)2(11
.
22
2
422 +=
===
LCLR
CLY
YUZ
ZUZIU LLL
ULmax khi mu s min
2221
RC
LCL
= 22max 42
CRLCRULU L
=
Tn ti hai gi tr 21, UL bng nhau. Khi
222
21
211L
=+
BIN THIN UC THEO R, L, C, Cc cc tr
Gi tr cc tr th minh ha Pha ca u v i
UC theo R
( ) CCLCCC Z
ZZR
UZZUZIU
22.
+===
ULmax khi mu s min:
CCL
C ZZZUUR
= 0 ; 2pi +=
ULmin khi mu s max: 0 CUR
Khng c hai gi tr no cho UC bng nhau
Kha hc LTH mn Vt l (KIT1) Thy ng Vit Hng (0985.074.831) Facebook: LyHung95
Tham gia kha hc LTH KIT-1 v Luyn gii mn Vt l ti Hocmai.vn t kt qu cao nht trong k TSH nm 2014!
UC theo L.
UCmax khi cng hng: RZUU
CL CC == max20 ;
1
;
0= 0 LL UZL
22
.00C
CCL
ZRZUUZL+
UC theo C ( )
1121)(
.
222
22
++
=
+===
CL
CL
C
CL
CCC
ZZ
ZZR
U
ZZZR
UZZUZIU
ULmax khi: RZRU
UZ
ZRZ LCL
LC
22
max
22
;+
=
+= ;
Khi : 2pi =+ RL v 2222 LRC UUUU ++=
Tn ti hai gi tr 21,CC 21 CC UU = . Khi :
021 2CCC =+
UC theo
1)2(
1
1.
222422
22
+=
+
===
LCCRCLU
C
CLR
UZZUZIU CCC
UCmax khi mu s min
2
21
2RCL
LC
= 22max 4
2CRLCR
ULUC
=
Tn ti hai gi tr 21, UC bng nhau. Khi
222
21 2 C =+
BIN THIN URL , URC THEO R
Cc cc tr
Gi tr cc i th minh ha Pha ca u v i
Kha hc LTH mn Vt l (KIT1) Thy ng Vit Hng (0985.074.831) Facebook: LyHung95
Tham gia kha hc LTH KIT-1 v Luyn gii mn Vt l ti Hocmai.vn t kt qu cao nht trong k TSH nm 2014!
URL theo R ( )
22
2
22
22
21
.
L
CLC
CL
LRLRLRL
ZRZZZy
yU
ZZR
ZRUZ
ZUZIU
+
+=
=
+
+===
* URL khng ph thuc R: UUyZZ RLLC === 12
o hm 222 )(
)2(20'L
LCC
ZRZZRZ
y+
+= :
CL
LRL ZZ
ZUURy
=== 00'
*Nu CL
LRLRLLC ZZ
ZUUUUZZ
= min2
*Nu CL
LRLRLLC ZZ
ZUUUUZZ
=>< max2
Khng tn ti hai gi tr no URL bng nhau
URC theo R ( )
22
2
22
22
21
.
C
CLL
CL
CRCRCRC
ZRZZZy
yU
ZZR
ZRUZ
ZUZIU
+
+=
=
+
+===
* URC khng ph thuc R: UUyZZ RCCL === 12
o hm 222 )(
)2(20'C
CLL
ZRZZRZy
+
+= :
CL
CRC ZZ
ZUURy
=== 00'
*Nu CL
CRCRCCL ZZ
ZUUUUZZ
= min2
*Nu CL
CRCRCCL ZZ
ZUUUUZZ
=>< max2
Khng tn ti hai gi tr no URC bng nhau
BIN THIN URL theo L, URC THEO C
Kha hc LTH mn Vt l (KIT1) Thy ng Vit Hng (0985.074.831) Facebook: LyHung95
Tham gia kha hc LTH KIT-1 v Luyn gii mn Vt l ti Hocmai.vn t kt qu cao nht trong k TSH nm 2014!
Cc cc tr Gi tr cc tr th minh ha URL theo L
( )22
2
22
22
21
.
L
CLC
CL
LRLRLRL
ZRZZZy
yU
ZZR
ZRUZ
ZUZIU
+
+=
=
+
+===
o hm y theo ZL: 222
22
)()(2
'
L
LCLC
ZRRZZZZy
+
=:
24
0'22
22 RZZZRZZZy CCLLCL+
==
K bng bin thin v v th ta c
Khi 2
4 22 RZZZ CCL
++= th
CCRL
ZRZURU
+=
22max 42
Khi ZL = 0 th 22min RZURUC
RL+
=
Khi UUZ RLL
Ta c bng bin thin (ly nghim dng, b nghim m)
ZL 0 2
4 22 RZZZ CCL
++=
+
Y - 0 + y
2
2
1RZC+ 1
Ymin URL
22 RZUR
C+ URLmax U
th minh ha
URC theo C ( )
22
2
22
22
21
.
C
CLL
CL
CRCRCRC
ZRZZZy
yU
ZZR
ZRUZ
ZUZIU
+
+=
=
+
+===
o hm y theo ZC: 22222
)()(2
'
C
LCCL
ZRRZZZZy
+
= :
24
0'22
22 RZZZRZZZy LLCLCC+
==
K bng bin thin v v th ta c
Khi 2
4 22 RZZZ LLC
++= th
LL
RCZRZ
URU+
=22max 4
2
Khi ZC = 0 th 22min RZURUL
RC+
=
Ta c bng bin thin (ly nghim dng, b nghim m)
ZL 0 2
4 22 RZZZ LLC
++=
+
Y - 0 + y
2
2
1RZL+ 1
Ymin URL
22 RZUR
L+ URCmax U
th minh ha
Kha hc LTH mn Vt l (KIT1) Thy ng Vit Hng (0985.074.831) Facebook: LyHung95
Tham gia kha hc LTH KIT-1 v Luyn gii mn Vt l ti Hocmai.vn t kt qu cao nht trong k TSH nm 2014!
Khi UUZ RCC