Physics Investigatory project on Semiconductors for class 12 CBSE
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investigatory class 12 project on thermistor
Physics Investigatory Project
to study the variation in electrical resistance
Aim-to compare the emf of different cells using potentiometerFull description
K.V Physics Investigatory class 12th CBSE.
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it has a great explanation of physics investigatory project
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PHYSICS PROJECT ON COULOMB'S LAWFull description
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Class 12 CBSE Physics Investigatory ProjectFull description
PROJECT ON REFRACTIVE INDEX . It is the right project make sure no one has done it in your school its your last moment resort. Easy viva questions may be predicted what is the cause of refraction a...
Class XII CBSE,INVESTIGATORY PROJECT-PHYSICS TITLE- VOLTAGE REGULATOR USING ZENER DIODE
K.V Physics Investigatory class 12th CBSE.
Investigatory Project of physics class 12thFull description
PHYSICS INVESTIGATORY PROJECT AIM:- CHARGING AND DISCHARGING OF CAPACITORS IN R-C CIRCUIT PURPOSE THE GOAL OF THIS PROJECT IS TO verify that 63% charge is stored in a capacitor in an R-C…Full description
Phys i c sI nve s t i gat or y Pr oj e c t
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CERTI FI CATE ACKNOWLEDGEMENT I NTRODUCTI ON WORKI NG PRECAUTI ONS USES BI BLI OGRAPHY
Index
Thi si st oc e r t i f yt hatTar unSi ngh,as t ude ntofc l as s XI I B has s uc c e s s f ul l yc ompl e t e dt he pr oj e c tt i t l e d “RECTI FI ER” unde rt he gui danc e ofMr .Nar e ndr a S ha r ma( S ubj e c tT e a c he r )Dur i ng t hea c a de mi cy e a r 201516 i n par t i al f ul fil l me nt of Phys i c s Pr ac t i c al Exami nat i onc onduc t edbyCBSE,Del hi .
Si gnat ur eofExt e r nalExa mi ne r
Si gnat ur eofSubj e c tTe a c he r
Ce r t i fic a t e Si gna t ur eofPr i nc i pa l
I nt hea c c ompl i s hme ntoft hi spr oj e c ts uc c e s s f ul l y ,ma ny peopl ehavebes towned upon met hei rbl es s i ngsand t he he ar tpl e dge ds uppor t ,t hi st i meIa m ut i l i z i ngt ot ha nka l l t hepe o pl ewhoha v eb e e nc onc e r ne dwi t hpr oj e c t . Pr i ma r i l yIwoul dt ha nkgodf orbe i ngabl et oc ompl e t et hi s pr oj e c twi t hs uc c e s s .The nIwoul dl i ket ot ha nkmyPr i nc i pa l and phys i c st eac herMr .Nar endr aShar ma,whoseval uabl e gui da nc eha sb e e nt heone st ha the l pe dmepa t c ht hi spr oj e c t a nd ma ke i tf ul lpr oofs uc c e s shi ss ugge s t i ons a nd hi s i ns t r uc t i onsha ss e r ve da st hema j orc ont r i but ort o wa r dst he c ompl e t i onoft hepr oj e c t . ThenIwoul dl i ket ot hankmypar ent sandf r i endswhohave he l pe dmewi t ht he i rv a l ua bl es ugg e s t i o nsa ndgui da nc eha s be e n he l pf uli n va r i ouspha s e soft he c ompl e t i on oft he pr oj e c t
Ac knowl e dge me nt
Ar e c t i fie ri sane l e c t r i c alde vi c et hatc onve r t s al t e r na t i ngc ur r e nt( AC) ,whi c hpe r i odi c a l l y r e ve r s e sdi r e c t i on,t odi r e c tc ur r e nt( DC) ,whi c h flo wsi nonl yonedi r e c t i on.Thepr oc e s si skno wn asr e c t i fic a t i on.Re c t i fic a t i onpr oduc e sat ypeof DCt ha te nc o mpa s s e sa c t i v evol t a ge sa ndc ur r e nt s , whi c ha r et he na dj us t e di nt oat ypeofc o ns t a nt v ol t a geDC,a l t hought hi sv ar i e sde pe ndi ngont he c ur r e nt ' se ndus e .Thec ur r e nti sa l l o we dt oflow uni nt e r r upt e di nonedi r e c t i on,a ndnoc ur r e nti s a l l o we dt oflo wi nt heoppos i t edi r e c t i on.
I nt r oduc t i on
Whe nt heAC i ss uppl i e dt ot het r a ns f or me r ,i ts t e p downt he240V mai ns uppl yt o12V.I thasacapabi l i t y ofdel i ver i ng700mA.The12vol t sACappear i ngacr os s t he s ec ondar yi st he RMS val ue.The f our di odes l a be l l e dD1t oD4a r ea r r a nge di n“ s e r i e spa i r s ”wi t h onl yt wodi ode sc onduc t i ngc ur r e ntdur i nge a c hha l f c y c l e .Thef ourdi ode sl a be l l e dD1t oD4a r ea r r a nge d i n“ s e r i e s pa i r s ” wi t h onl yt wo di ode sc o nduc t i ng c ur r e ntdur i nge ac hha l fc y c l e .Dur i ngt hepos i t i veha l f c y c l eoft hes uppl y ,di ode sD1andD2c o nduc ti ns e r i e s whi l edi odesD3and D4ar er ever s ebi as ed and t he c ur r entflowst hr ought hel oad.
Wor ki ng
Ci r c ui tDi agr am
1 .Ke e ps a f eyour s e l ff r om hi ghvol t a ge . 2.Sol de rt hewi r es af e l y . 3 .Whi l es o l de r i ngdon’ tt ouc ht hes ol de r i ng t i p. 4 .Sol de runde ra dul ts upe r vi s i on.
P r e c a u t i o n s
Mos te l e c t r oni cde vi c ec a nnotwi t hs t a ndve r y hi ghvol t ageora l t e r nat i ngc ur r e ntduet oi t s i nt e ns ehi ghpowe r .Theus eofbat t e r i e si na l l de vi c e si snotpr ac t i c a la st he i rr e pl ac e me nta nd dur a bi l i t yi sahugepr obl e ma st hede vi s eha st o bedi s mant l e de ac ht i mef ors uc hr e pl ac e me nt . Sot he s er e c t i fie r sa r eus e di nmos toft he e l e c t r oni cde vi c e sl i keTV s ,Ra di os ,Cha r ge r s a ndLi ght i ngse t c .Thec ommonus e sofr e c t i fie r s a r et os uppl ypol a r i z edvol t a gef orwe l di ng, de t e c t i onofa mpl i t udemodul a t e dr a di os i gna l s .
