Physics Investigatory Project.pptx

Phys i c sI nve s t i gat or y Pr oj e c t

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ByTar unSi nghofXI IB,   Mana Ma vRac hnaI nt er nat i onalSchool

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CERTI FI CATE ACKNOWLEDGEMENT I NTRODUCTI ON WORKI NG PRECAUTI ONS USES BI BLI OGRAPHY

Index

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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

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Ac knowl e dge me nt

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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

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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

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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 . 

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Us e s

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NCERTTe xt book

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Subj e c tTe a c he r

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www. googl e . c om

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www. s c r i bd. c om

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www. wi ki pe di a. c om

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www. s l i de s ha r e . c om

Bi bl i ogr aphy

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