Deido al alto ri'o de la tension (ontinua de salida& los (ir(uitos re(ti)i(adores de media onda& a pesar del (ondensador de (arga& son solamente a(eptales en (asos de (orrientes de (arga de asta apro2imadamente 30mA y donde no e2isten e2igen(ias espe(iales para tensiones de ri'o m4nimas. Por esto se usan mayormente los (ir(uitos de re(ti)i(a(i*n de onda (ompleta para la alimenta(i*n de (ir(uitos ele(tr*ni(os. 5n estos (ir(uitos se apro%e(an amos semi(i(los de la tension alterna de entrada. 5ntre los (ir(uitos re(ti)i(adores de onda (ompleta se di)eren(ian el (ir(uito de onda (ompleta (on toma (entral M7 y el (ir(uito de onda (ompleta en puente 87.
Circ(ito de p(ente con condensador de car'a con la correspondiente forma de onda de la tensión de salida ( 2
:alores caractersticos del circ(ito rectificador de onda completa tipo p(ente
62$ &ensión efica0 del sec(ndario del transf. &ension en vaco &ension de salida con car'a Corriente contin(a de salida &ension inversa ma4ima &ension de ri0o ,rec(encia de $ ri0
$2777 8 92 $2777 IL777 $RM $ri0
$1
1
.1 1&# 1 0&61
.1 1&9 . 10-# . ,! / C! ) in
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Nro. DD-106 Página 3/10
!ntes de empe0ar con el laboratorio verificar el correcto estado de los dispositivos semicond(ctores detecte si e4istiese al'(na falla sol(ciónela caso contrario informar al instr(ctor. etecte el correcto ,(ncionamiento de los diodos /(e conforman el p(ente de diodos complete la tabla= Dispositi%o CIRC$I&O E ON! I,EREN&E" E C!R#!
REC&I,IC!OR COM
!> Cone(te el (ir(uito de medi(i*n segn el es;uema y apli;ue la tensi*n de opera(i*n 1 < 1= / 60>' a las entradas 1 y . Ojo: E l puente 2/4 no está conectado M22 Mida la tensi*n de salida u (on el os(ilos(opio. ?egule el os(ilos(opio de )orma ;ue representen al menos tres (i(los. Trans)iera la (ur%a a la re+illa. E1-
ma2 < 1%
min < #%
ri' pp < B%
M23 Cone(te el (ondensador de (arga C 1 < 10u@ 8r./7 y (on el os(ilos(opio. Trans)iera la (ur%a a la re+illa. E15
ma2 < 1%
min < 11.3%
ri' pp < 0.3%
mida u
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?21 uE in)luen(ia tiene la (one2i*n del (ondensador de (arga sore la tensi*n de salida u en un (ir(uito re(ti)i(ador de onda (ompleta sin (argaF G @ace /(e la onda sea m%s recta el voltaje ri0o es m%s pe/(eAo !1B Teniendo en (uenta el (ir(uito de medi(i*n AB. (one(tado C1 < 10u@ 8r. /7
De+e
M2- Cone(te la resisten(ia de (arga ? < 1&H y u (on el os(ilos(opio. Trans)iera la (ur%a a la
mida re+illa.
E1;
ma2 <1%
min < 11.%
ri' pp < 0.9%
M25 Cone(te la resisten(ia de (arga ? 9 < &H y u (on el os(ilos(opio. Trans)iera la (ur%a a la
E1
mida re+illa.
ma2 < 1%
min < B%
ri' pp < #%
M2; Cone(te la resisten(ia de (arga ? 10 < 3&6H y u (on el os(ilos(opio. Trans)iera la (ur%a a la
E1D
ma2 <
min <
ri' pp <
mida re+illa.
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Nro. DD-106 Página /10
E1> Con el mult4metro mida la )re(uen(ia 1 de entrada y de salida& luego (omplete el siguiente (uadro.
@re(uen(ia de entrada: ) in < ..60 >' .................. @re(uen(ia de salida: ) rout < 13>'. ...................
ue le indi(an estos %aloresF Ila )re(uen(ia en el punto es mayor ;ue la entrada por;ue el si(lo de onda es 9 milisegundos IIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIII
?22 uE rela(i*n e2iste entre el %alor de la tension de ri'o u ri' pp y el %alor de la resisten(ia del resistor de (arga& (uando el (ondensador de (arga es (onstanteF Ges in%ersamente propor(ional a mayor resisten(ia menor %olta+e ri'o a menor resisten(ia mayor %olta+e ri'o. GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
?22 Por ;uE la tension de ri'o u ri' pp no tiene una (ur%a sinuosidalF GGGGG por;ue la onda es re(ti)i(ada GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG CIRC$I&O REC&I,IC!OR E ON! COM
!12 Cone(te el (ir(uito medi(i*n segn este es;uema y apli;ue una tension de opera(i*n de 1= / 60>' a las entradas .
M2> Cone(te el (ondensador de (arga C < u@ 8r. 10/117. Mida e ,! (on el multimetro.
C- 8 22(, $2 813.Bv IL 8B.;1Dm!
M3B Cone(te el (ondensador de (arga C # < 100u@ 8r. 6/107. Mida e ,! (on el multimetro. C3 8 1BB(, $2 815.B3v IL 8B.;3m!
de
1 < 1 y
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Nro. DD-106 Página 9/10
?25 uE rela(i*n e2iste entre el %alor de tension de salida y el %alor de la (apa(itan(ia del (ondensador de (argaF GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
E22 i dos re(ti)i(adores& uno de media onda y otro de onda (ompleta tienen el mismo %alor de (ondensador de (arga y resisten(ia de (arga (uál de los dos pro%ee una tension de salida mas altaF GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG !13 5mpleando el (ir(uito de medi(i*n (omo en A1 M32 Cone(te C < u@ 8r. 10/117 y mida la tension de salida u (on el os(ilos(opio. Trans)iera la (ur%a de u a la re+illa.
E23 $2ma4 8 $2min 8 $ri02 pp 8 f
8
$2
8
IL
8
M3- Cone(te C# < 100u@ 8r. 6/107 y mida la tension de salida u (on el os(ilos(opio. Trans)iera la (ur%a de u a la re+illa. E25 $2ma4 8 $2min 8 $ri02 pp 8 f
8
$2
8
IL
8
?2; uE rela(i*n e2iste entre el %alor de la tension de ri'o ri' pp y el %alor de la (apa(itan(ia del (ondensador de (arga& (on una resisten(ia de (arga (onstanteF
