Junction Diodes

8/2/2019 Junction Diodes

1/18

THAFDKNEXDUKY EHPFDHT


2/18

92. R!uvrh lne N!uvrh thafdknexdukyt lyh nhxuylj ihdlxth hjhduyfdljjv nhxuyljfarxyfuv ft leehe uk hjhduyfdljjv nhxuylj Tf ky Mh.

9


3/18

bb Nhly ugh oxndufkn* ugh `yhh hjhduyknt `yka n!yhmfkn afmyluh uk}lyet r!yhmfkn lne ugh gkjht fn r!yhmfkn afmyluh uk}lyet n!yhmfkn. Ugft rykdhtt ftcnk}n lt ef``xtfkn. Exh uk ef``xtfkn* rktfufph fknt lyh jh`u kphy fn n!yhmfknlne nhmlufph fknt lyh jh`u kphy fn r!yhmfkn* nhly ugh oxndufkn. Ughth fkntlyh faakifjh. Exh uk ugh faakifjh fknt kn hfughy tfeh k` ugh oxndufkn lnfnuhynlj hjhduyfd `fhje ft `kyahe lu ugh oxndufkn }gfdg ft efyhduhe `yka n uk r.Lu r!n oxndufkn l nhxuylj yhmfkn }ghyh ughyh lyh nk dglymh dlyyfhyt ft`kyahe lne fu ft dljjhe ehrjhufkn jlvhy. Ugh ugfdcnhtt k` ugh ehrjhufkn jlvhyft k` ugh kyehy k`


4/18

9. ]glu ft yhduf`fhy; Hwrjlfn ugh }kycfnm k` glj` }lph lne `xjj }lph yhduf`fhytxtfnm eflmylat.

L. Dknphytfkn k` L.D. pkjulmh fnuk E.D. pkjulmh ft dljjhe yhduf`fdlufkn. L r!noxndufkn efkeh ft xthe lt l yhduf`fhy.

Glj` }lph yhduf`fhy ? Fn l glj` }lphyhduf`fhy l tfnmjh efkeh ft xthe. Ugh LD`yka ugh thdknelyv k` ugh uylnt`kyahyLI ft lrrjfhe uk ugh efkeh lne l jkle

yhtftulndh JY fn thyfht. Ugh

rkuhnuflj ldyktt LI dglnmh uk hphyvglj` dvdjh. Exyfnm ugh rktfufph glj`dvdjh* ugh efkeh ft `ky}lye iflthe lnedxyyhnu `jk}t ugkxmg ugh efkeh lne ugh jkle yhtftulndh. Exyfnm ughnhmlufph glj` dvdjh* ugh efkeh ft yhphytfnm iflthe lne dxyyhnu ekht nku`jk} ugykxmg ugh efkeh lne jkle yhtftulndh. Ugxt dxyyhnu `jk}t exyfnm ughrktfufph glj` dvdjh lne ft ijkdche exyfnm ugh nhmlufph glj` dvdjh. Ughkxurxu ldyktt ugh jkle yhtftulndh dknulfnt yhduf`fhe pkjulmh }gfdg ft lplyflijh ED.

H``fdfhndv k` glj`! }lph yhduf`fhy 12.520

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YED rk}hykxrxu

LD rk}hyfnrxu Y y1

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]ghyh `y 1 `ky}lye yhtftulndh k` efkeh. JY ! Jkle yhtftulndh

@xjj ]lph yhduf`fhy? Fu dln ih dkntuyxduhe xtfnm u}k efkeht< 9

E lne E

}gfdg lyh dknnhduhe fnrlyljjhj. Ugh thdknelyv k`

ugh uylnt`kyahy LI ft dhnuyhulrrhe. Ugh u}k hnet L lneI lyh dknnhduhe uk ikug ughr!tfeht k` ugh efkeht lneikug ugh n!tfeht lyh okfnhe.Ldyktt ugh dkaakn rkfnu k` n!tfeht lne ugh dhnuylj ulr D* l jkleyhtftulndh u}k hnet L lne I lyh dknnhduhe uk ikug ugh r!hnet k` ughefkeht lne ikug ugh n!hnet lyh okfnhe. Ldyktt ugh dkaakn rkfnu k` n!hnet lne ugh dhnuylj ulr D* l jkle yhtftulndh fn dknnhduhe. Exh uk ughdhnuylj ulrrfnm }ghn L ft fn rktfufph dvdjh* I }fjj ih fn nhmlufph dvdjh.

]ghn L ft fn rktfufph glj` dvdjh. Efkeh


5/18

4. ]glu ft l _hnhy efkeh; Hwrjlfn gk} fu ft xthe lt pkjulmh yhmxjluky;

L. _hnhy efkeh ? Fu ft l ghlpfjvekrhe r!n oxndufkn efkeh }gfdg ftkrhyluhe fn ugh iyhlcek}n yhmfknfn yhphyth iflt akeh._hnhy efkehglt l tglyr iyhlcek}n pkjulmhfn ugh yhphyth iflt ihdlxth k` ghlpv ekrfnm. Ugft pkjulmh ft dljjhe _hnhyPkjulmh 'P_&. Ihdlxth k` ghlpv ekrfnm }feug k` ugh ehrjhufkn jlvhy

ehdyhltht.Fn `ky}lye iflt* zhnhy efkeh ldu jfch ln kyefnlyv r!n oxndufknefkeh._hnhy efkeh ft xthe lt l pkjulmh yhmxjluky. F` ugh fnrxu pkjulmhfndyhltht* akyh dxyyhnu rlttht ugkyxmg ugh zhnhy lne akyh rkuhnuflj fteykrrhe ldyktt Y. Ugh rkuhnuflj P ldyktt ugh zhnhy yhalfnt tlah.]ghn

JY ft jhtt akyh dxyyhnu rlttht ugykxmg fu* lne r.e ldyktt Y ft jhtt* Lne

ugh r.e ldyktt zhnhy yhalfnt dkntulnu. Ugxt ugh kxurxu pkjulmh ftyhmxjluhe.

Kxurxu pkjulmh 'PK& 1 _hnhy pkjulmh 'P_&

Dxyyhnu ugykxmg jkle yhtftulndh ' &JF_

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1

Pkjulmh ldyktt thyfht yhtftulndh 'P&1fnrxu pkjulmh zhnhy pkjulmh.

Dxyyhnu ugykxmg zhnhy efkeh 'F_& 1 F FJ.

TGKYU LNT]HY \XHTUFKNT


6/18

r n oxndufkn ?

]ghn l thaf dknexdufnm aluhyflj txdg lt tfjfdkn kymhyalnfxa ft ekrhe }fug farxyfuv fn txdg l }lv ugluknh tfeh n!uvrh lne ugh kughy tfeh r!uvrh farxyfufhtughn r!n oxndufkn ft `kyahe. r!tfeh k` thafdknexduky dknulfnt hwdhtt gkjht lne n!tfeh k` thaf dknexduky dknulfnthwdhtt k` hjhduyknt.

bb Nhly ugh oxndufkn* ugh `yhh hjhduyknt `yka n!yhmfkn afmyluh uk}lyet r!yhmfkn lne ugh gkjht fn r!yhmfkn afmyluh uk}lyet n!yhmfkn. Ugft rykdhtt ftcnk}n lt ef``xtfkn. Exh uk ef``xtfkn* rktfufph fknt lyh jh`u kphy fn n!yhmfknlne nhmlufph fknt lyh jh`u kphy fn r!yhmfkn* nhly ugh oxndufkn. Ughth fkntlyh faakifjh. Exh uk ugh faakifjh fknt kn hfughy tfeh k` ugh oxndufkn lnfnuhynlj hjhduyfd `fhje ft `kyahe lu ugh oxndufkn }gfdg ft efyhduhe `yka n uk r.Lu r!n oxndufkn l nhxuylj yhmfkn }ghyh ughyh lyh nk dglymh dlyyfhyt ft`kyahe lne fu ft dljjhe ehrjhufkn jlvhy. Ugh ugfdcnhtt k` ugh ehrjhufkn jlvhyft k` ugh kyehy k`


7/18

@ky}lye Iflt? Fn l r!n oxndufkn efkeh* r!yhmfkn ft dknnhduhe uk rktfufph uhyafnlj'gfmghy rkuhnuflj& k` l iluuhyv lne n!yhmfkn ftdknnhduhe uk nhmlufph uhyafnlj 'jk}hyrkuhnuflj& k` l iluuhyv .Ughn fu ft tlfe uk ih

`ky}lye iflthe. Ugh }feug k` ehrjhufkn jlvhylne ilyyfhy rkuhnuflj ehdyhlth. Ugh yhtftulndhk` ln fehlj efkeh fn `ky}lye iflthe dknefufkn ftzhyk .Fn `ky}lye iflthe dknefufkn* ugh `jk} k`dxyyhnu ft alfnjv exh uk ugh ef``xtfkn k` dglymhdlyyfhyt. Ugh efyhdufkn k` dxyyhnu ft `yka r uk n.Ugh pkjulmh k` lu }gfdg ugh dxyyhnu tulyut ftdljjhe cnhh pkjulmh. Ugh dxyyhnu }fjj ih k`kyehy k` `h} afjj larhyht

YhphythIflt? Fn l r!n oxndufkn efkeh* r!yhmfkn ft dknnhduhe uk nhmlufphuhyafnlj 'jk} rkuhnuflj& k` l iluuhyv lne n!yhmfkn ft dknnhduhe uk l rktfufphuhyafnlj 'gfmg rkuhnuflj& k` ugh iluuhyv ughn fu ft tlfe uk ih yhphyth iflthe.

Ugh yhtftulndh k` ugh r!n oxndufkn efkeh fn yhphyth iflt ft likxu


8/18

5. Ehtdyfih gk} l thaf dknexduky efkeh ft xthe lt glj` }lph yhduf`fhy;

' Oxnh 92


9/18

lyh okfnhe. Ldyktt ugh dkaakn rkfnu k` n!tfeht lne ugh dhnuylj ulr D* ljkle yhtftulndh u}k hnet L lne I lyh dknnhduhe uk ikug ugh r!hnet k` ughefkeht lne ikug ugh n!hnet lyh okfnhe. Ldyktt ugh dkaakn rkfnu k` n!hnet lne ugh dhnuylj ulr D* l jkle yhtftulndh fn dknnhduhe. Exh uk ughdhnuylj ulrrfnm }ghn L ft fn rktfufph dvdjh* I }fjj ih fn nhmlufph dvdjh.

]ghn L ft fn rktfufph glj` dvdjh. Efkeh

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Junction Diodes