INFORME FINAL
CIRCUITOS ELÉCTRICOS I
“
UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOS, Decana de América ”
FACULTAD DE INGENIERÍA ELECTRÓNICA E.A.P DE INGENIERÍA ELÉCTRICA
INFORME PREVIO PREVIO Y FINAL DE CIRCUITOS ELECTRICOS I LABORARTORIO LABORARTORIO Nº10 TEMA: TEOREMA DE LA MAXIMA TRANSEFERENCIA DE POTENCIA
PROFESOR: ING.VICTOR ALVA
ALUMNO:
BERROCAL LOPEZ DIEGO ALFREDO
CODIGO: 09190104
GRUPO: LUNES 10 - 12
LIMA - PERÚ 2014 Página 1
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INFORME FINAL
I.
CIRCUITOS ELÉCTRICOS I
PROCEDIMIENTO: •
Armar el circuito de la fgura A. Regular la uente a 1! "oltio#.
E#to# #on lo# dato# o$tenido# en la e%&eriencia e%&eriencia de la$oratorio.
RL'() *+.1,
*-
IL'mA )
*,
,*
0./ +01 / 1*. **.-/ 1!.1 ! /*
Lo# dato# o$tenido# en el la$oratorio #on mu2 &arecido# a lo# dato# 3ue #e o$tu"o &or el m4todo te5rico6 tienen
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INFORME FINAL
•
•
CIRCUITOS ELÉCTRICOS I
Armar el circuito de la fgura B
Calcular el "alor de RL6 3ue &uede a$#or$er la &otencia má%ima entre lo# &unto# a8$6 a9u#tar con el &otenci5metro 2 conectarlo como RL.
En la e%&eriencia de
la$oratorio la$oratorio no# #ali5: Rt;
1.,*= (
>t;
0.,,"
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INFORME FINAL
•
CIRCUITOS ELÉCTRICOS I
?edir la# ten#ione# 2 corriente# en todo# lo# elemento# de la red6 anotando lo# "alore# 'Inclu2a la uente). E#to# ueron nue#tro# dato#: 8Fuente de @en#ion < 1!> 8Inten#idad total < ,mA
II .
R1
1=(
I1
,mA
>1
R*
1=(
I*
1.!mA
>*
R/
1(
I/
R,
RL
I/
*.,-m A *.,-m A
>/ >,
11.* " /.-++ " .* " /.01, "
CUESTIONARIO 1 D!"#!$%&! '( )*+,)+ )*+,)+ ,! "/"( *%!+)( %&(+$!&!+)(:
De#eamo# encontrar el "alor el "alor de la re# e#i# i#te tenc ncia ia RL co como mo la má má%i %ima ma &oten otenci cia a 3ue 3ue #e le tran#mite. Primero6 nece#itamo# encontrar la &otencia a &artir de: 2
P= I × RL
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I Vt h I = RL + RTH
Encontramo# 3ue la &otencia má%ima e#:
(
)
2
Vt h P= × RL RL + RTH
Para encontrar el "alor de Rc 3ue ma%imice la &otencia6 utiliamo# el cálculo dierencial &ara encontrar d5nde la deri"ada d&dRc e# igual a cero. i tomamo# la deri"ada6 o$tenemo#: dP dRL
2
= Vt
h
2
( Rt h + RL ) −2 ( Rt Rt h + RL ) × RL × ( RL + Rt h ) 4
La deri"ada e# cero cuando: ( Rt h + RL ) −2 ( Rt h + RL ) × RL=0 2
O $ien tam$i4n cuando: ( Rt h + RL ) ( Rt Rt h+ RL −2 RL )= 0 2
De#&e9ando e#a# do# ecuacione# o$tenemo# 3ue RL < R@. En e#ta otra gráfca &odemo# a&reciar la "ariaci5n de rendimiento en unci5n de la re#i#tencia re#i#tencia de carga carga RL.
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
*%! *%!+) +)( ( "/ "/ "( "( !+ #+) #+) + + ,! '( )*&& )*&&! !+% +%! ! N*&%*+ I+.
e #a$e 3ue >t; en #erie con la re#i#tencia Rt; 2 Rl 6 la &otencia má%ima #e da cuando RL < Rt; < Re3.
Pmax =
( Vt h )
2
4 RL
A;ora #a$emo# 3ue:
¿=
VTH Rt h
Vt h= ¿ × R t h
A;ora rem&laando en la &otencia má%ima 3uedar7a en unci5n de la Corriente orton.
Pmax=
( ¿ )2 × Req 4
T(;#'(& '*$ 5('*&!$ ,! I' 8 R' )*+ V&'7 P&' 8 6&(<)(& %*,($ !$%($ 5(&(;'!$ &!$!)%* ( RL.
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
Dato#: Fuente de corriente inde&endiente: !mA. Re#i#tencia e3ui"alente ,= (. Re#i#tencia RL "aria$le de .*= a += o;mio#. o o o
RL '() .* 1.* * *.+ /.+ , ,. !
IL 'mA) ,.0* /.+, /./// *.-,1 *.!, *.! *./* *.***
>RL '>) .-!* ,.1! .0 +.*/! -.0,/ 1 1.0 11.11
PRL 'm) ,.!/! 10.0! **.** *,.** *,.-+ *! *,.++ *,.-
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
GRHFICO: Gráfco de RL "#. IRL ! ,.! , /.! / *.! I+%!+$,(, ,! '( &!$$%!+)( "A * 1.! 1 .! 1 * / , ! 0 + R!$$%!+)( !+ =>
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INFORME FINAL
•
CIRCUITOS ELÉCTRICOS I
A medida 3ue la re#i#tencia aumenta #u "alor6 la inte inten# n#id idad ad "a di#m di#min inu2 u2en endo do66 #o #on n In"e In"er# r#am amen ente te &ro&orcional Gráfco de RL "#. >RL 1, 1* 1 + V*'%(@! ,! RL V
, *
1
*
/
,
!
0
+
R!$$%!+)( !+ ?>
•
A medida 3ue la re#i#tencia incrementa #u "alor6 el "olta9e tam$i4n "a aumentando6 #on directamente &ro&orcional.
Gráfco de RL "#. PRL
-
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
/ *! * P*%!+)( ,! RL "
1! 1 !
1
*
/
,
!
0
+
R!$$%!+)( RL !+ ?>
•
e &uede a&reciar 3ue al inicio la re#i#tencia con el "alor de #u &otencia #on directamente directamente &ro&orcional6 &ro&orcional6 &ero ;a#ta cierto "alor de la re#i#tencia la &otencia em&iea a di#minuir 2 e# cuando ad3uiere el "alor de ,=6 lo cual #er7a #u &otencia má%ima.
4 D;#@(& D;#@(& !' )&)#%* ,! '( <6#&( B +,)(+,* +,)(+,* '*$ 5('*&!$ ,! '($ %!+$*+!$ 8 )*&&!+%!$ "!,,($.
-
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
!. D! '( <6#&( B7 ,;#@(& !' )&)#%* T!5!++ 8 N*&%*+ !#5('!+%! %(+%* !!&"!+%(' )*"* %!&)*:
@e5rico: @e5rico: Circuito orton
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
e &uede a&reciar a&reciar 3ue tanto tanto lo# re#ultado# re#ultado# te5rico# te5rico# como lo# e%&erimentale# e%&erimentale# #on ca#i iguale#. (6( !' )/')#'* ,! '( *%!+)( !+ )(,( !'!"!+%* !'!"!+%* 8 ,!%!&"+! ,!%!&"+! '( !<)!+)( !<)!+)( ,!' )&)#%* )&)#%* + PL P
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
6 lo cual #u efciencia e# del !. E+ '( F6#&( "*$%&(,( $! ,! ,!%!&"+(&:
( E' 5('*& ,! R #! ()! #! V(-; V(-; $!( "/"*:
A&licamo# teorema de @;e"enin &ara ;allar la má%ima tran#erencia
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
Juedando:
D5nde: ;E' 5('*& ,! R #! ()! #! '( *%!+)( !+%&! ( H ; $!( "/"(: P*& %!*&3( $! ,!"*$%& #! "/"( $! ,( )#(+,* R% RL:
'(
*%!+)(
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
a$iendo 3ue la Potencia de la uente e#: .,00 % '0.0,/!mA)< /-.0 .
Enton Entonce# ce#::
6 lo cual e# un
,-.-.
A+*% A+*%( (& O;$ O;$!&5( !&5() )*+ *+!$ !$ !!&"!+%*:
8
)*+) )*+)'# '#$ $*+ *+!$
,!' ,!'
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INFORME FINAL
CIRCUITOS ELÉCTRICOS I
E# recomenda$le el u#o de &otenci5metro# 2a 3ue no# a2uda a acilitar a con#truir un circuito 3ue #e adecue con lo# "alore# de lo# elemento# 3ue #e tiene a mano.
9B;'*6&(3(: o
o
;tt&:u#uari#.tinet.cat#9eedoc#rendimiento.&d '11*) Ric;ard C. Dor 2 Name# A. "o$oda. Circuito# el4ctrico#6 Octa"a edici5n6 *116 &ág. 10-81+