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Cassette Tape-RecorderdWlsV Vsi-jsdWkMZjekk÷;k Open Cassette Tape-Recorder pas

gsa jaxhr Nk;kfp= vkgas- gk ,d vfHkuo miØevkgas- ;akrhy fujfujkGh Electronic Circuits vusdo”kk±P;k la’kks/kukuarj r;kj dsyh vkgsr- iakp gtkj#i;akP;k eksBÓkk VsijsdWkMZje/;safg brdh pakxyh;kstuk rqEgakl feG.kkj ukgh- v’kk ;k egkxM;k VsijsdWkMZje/;sa foukdkj.k Complicated Circuits dakokijrkr vkf.k v’kh xqarkxqarhph jpuk dak djrkr gsadksMsa eykrjh vtwu myxMysa ukgha- ;keqGsa Reco-rding quality e/;sa dakgha fo’ks”k Qjd iMrks vlsfgfnlr ukgh- ;klkBha v’;k izdkjph xqarkxqarhphfo|qr-eaMy ;kstuk eyk ekU; ukgh- vkrak ek>hjpuk igky rj rh vfr’k; ljG vkgs- rlspxq.koŸksarfg rh deh iMr ukgh gsa rqeP;k /;kuha;sbZy- vkrak ek÷;k ;k jpuspha oSf’k”BÓksa lakxrks&

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{1} IC LA 3161 gk ,dp IC eh Play vkf.kRecording ;k nksUgha dk;kZlkBha okijyk vkgs- ;kykPre-amplifier Eg.krkr- Play P;k osGha vlysyh ;kIC ph lfdZV vWlsCyh txtkghj vkgs- tkLrfdaerhP;k eksBÓkk VsijsdWkMZje/;sa jsdWkfM±xlkBha osxGkIC okijyk tkrks- eyk v’kh t#jh iMr ukgh-jsdWkfM±xP;kosGha R/P Lohpe/kwu LA 3161 pas lfdZVfM>kbZu eh iw.kZi.ksa cnyysa vkgsa- High Frequency ,Bypass dj.ÓkklkBha R;k –f”Vusap eh LA 3161 phlfdZV vWlsaCyh cnywu fufÜpr dsyh vkgs-Equalisation lkBha ek>h gh ;kstuk Qkj mi;qä >kyhvkgs- ;keqGsa Low vkf.k High Frequences lq;ksX;Boost gksrkr vkf.k Distortion, Reduce gksrsa- ek÷;kRecording System psa gsa ,d [kkl oSf’k”BÓk vkgsa-

{2} Main amplifier lkBha okijysY;k TDA 1010IC P;k e/kY;k nksu fiuke/;sa ,d O . 1 mf pkfljWfed vFkok iWkfyLVj diWflVj vlrks- ;keqGsap;kp ,dk IC e/khy nksu Lora= foHkkxakrhy nksulfdZV~l tksM.kkjk rks ,d fczt vkgs( gk viwoZ ‘kks/keyk ykxyk- ;kpk Advantage eh dk; ?ksrykekghr vkgs\ rks difyax diWflVj dk<wu R;keksdGîkk >kysY;k nksu fiuake/;sa Bass Treble

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lfdZVps Input vkf.k Output lekfo”V dsys vkf.kxaer v’kh dha] ;kp IC 1010 e/;sa rks Bass Treblecsekywe clyk- pakxyh dWlsV Vkdyh vkf.k uqlR;kIC pk Iuput gsMyk tksMyk rjh Bass Treble pkbQsDV vxnh O;ofLFkr tk.korks- eyk gk ?kckMykHk >kyk R;keqGsa IC LA 3161 Pre-Amplifier laiw.kZeksdGk >kyk vkgs- jsdWkfM±xP;kosGha R;akrhylfdZVP;k R;k R;k cnyklkBha vusdfo/k Alternetseyk Bsork vkys- ;kf’kok; Play vkf.k RecordingnksUghaosGha Bass Treble lfdZV dk;e jkgrvlY;keqGsa Sharp Equalisation izkIr dj.îkklkBhaeyk R;kpk Qkj mi;ksx >kyk vkgs-gkeksZfu;e orcyk ;akps rkjLoj vkf.k eUnzLoj lq;ksX; Boostgks.îkklkBha izR;{k ok|sa oktrkuk Recording P;k osGhaEarphon ykowu vkf.k Monitoring d:u Bass TreblelfdZVe/;sa fizlsV}kjsa eyk gok rlk SharpnessfeGfork vkyk- Recording Quality e/;sa lq/kkj.kkdj.îkkl ;keqGsa eyk Qkj enr >kyh- gsa nqljsaoSf’k”Bîk-

¿3À jsdWkfM±x flXuYl [Recording Signals]eWkfuVfjax d:u ,sdrakuk tjh O;ofLFkr vkf.klq;ksX; okVys rjh izR;{k /ofufQrhoj jsdWkfM±x

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gksrkuk dekyhps fMLVWkVZ gksrkr- R;k flXuYlpkAmplitude vfr’k; vfu;fer gksrks vkf.k R;keqGsajsdWkfM±x Qkjp foÑr gksrs vkf.k gsa vls rjh dakgksrs rj Magnetic Recording e/;sap ewyr% gk nks”kvkgs- gk nks”k ?kkyfo.îkklkBha /ofufQrhoj izR;{kjsdWkfM±x gksrsosGha jsdWkfM±x flXuyl~P;k Linearity phvfr’k; vko’îkdrk vlrsa ;k dk;kZlkBha ;kSignals e/;sa Ultrasonic Frequency Eg.kts Loukrhrdaiula[;k vWM djkoh ykxrs- lsdankyk 20 is{kkdeh vkf.k 20]000 is{kk tkLr fÝDosUlh ekuohdku xzg.k d:a ‘kdr ukgh- 20]000 is{kkfg cjhptkLr Eg.kts Very high Frequency, RecordingSignals e/;sa vWM dsY;koj rs Lineare gksrkr- R;akpsTransfer Characteristics cnyrs vkf.k rs VsijsdWkfM±xlkBha lq;ksX; gksrkr- gh vWM djkoh ykx.kkjhUltrasonic Frequency r;kj dj.îkklkBha ,dk LocalOscilletor ph t#jh ykxrs- ;kyk Bias and EraseOscilletor Eg.krkr- eksBeksBîkk VsijsdWkMZje/;sa ;klkBha,d dWkbZy vkf.k nksu VWªfU>LVlZuh ;qä ,d lfdZVvlrs- ;akrhy ;k VWªfU>LVlZP;k tksMhyk Darlingtonpair Eg.krkr- iWkf>fVOg vkf.k fuxsfVOg gkQ lk;dYl~leku gks.îkklkBha gh ;kstuk vlrs-eh ;k ;kstusyklaiw.kZp QkVk fnyk vkgs- ;klkBha eh dsoG ,d IC 555

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okijyk vkgs- cÚ;kp’kk [kViVhuarj eh R;kphlfdZV vWlsaCyh fof’k”B jsf>LVlZ vkf.k diWflVlZoki:u fufÜpr dsyh vkgs- R;keqGsa gk SquareSignal Generator ;k Lo:iakr dk;Z djrks- ;ke/;saBias vkf.k Erase Frequency tkLr fLFkj feGrs- gsAC Biasing vkf.k AC Erasing vkgs- gh i)r tkLr‘kkL=’kq) vkgs- AC Biasing pk ‘kks/k teZuhusykoyk- AC eqGsa Distorshion vkf.k Noise gs nks”ktkÅu jsdWkfM±x mŸke gksrs- vkoktakr ojhy dlyhfgfoÑfr u ;srk rks eqGkcjgqdwe tlkP;krlk ;srks- gasfrljsa oSf’k”Bîk-

¿4À Recording Level Indicator lkBha Qä ,dpVWªfU>LVj vkf.k ,dp L . E . D . [Light EmittingDiode] okijyk vkgs- gsa pkSFks oSf’k”Bîk-

¿5À Automatic Level control gsa ,d lfdZV ehvŸ;ko’;d ekuysa vkgsa- ;k loZ dusD’kulkBha R/PLohp nksu okijkoh ykxyh vkgsr-

¿6À Condensor Microphone rhu yhMpkvf/kd Qualitative vlY;keqGsa rksp okijyk vkgs-

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¿7À Play, Forword, Reverse, Pause, Stop,Eject ;akuk ejkBh Hkk”ksar izfr’kCn feGr ukghr-;klkBha eh laÑr Hkk”kspk vkJ; ?ksryk vkgs-

1] Play - iqj%lj laFkxfr vFkok fogkj -- mnkgj.kkFkZ&‘kCnfogkj] xkufogkj] Lojfogkj-

2] Forword - nzqrxfr vFkok iqj%lj nzqrxfr

-3] Reverse - nzqrkxfr ¿ nzqr vkxfr ÀvFkok iÜpkr nzqrxfr-

4] Pause - fojke

5] Stop - foJke

6] Eject - mPpyu

vls vk.k[khu cjsp dakgha vkgas( foLrkjHk;kLroys[ku vkojrs ?ksrys vkgs-

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bfr ys[kulhekvfÜou oAA 13 /ku=;ksn’kh ‘kds 1926-