UNITS $ Paversemiconductor periees amd éommuteuion
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dehynition s
Pouser electronic tg dotigued ar Application oy:
Seid stat, clecWobutor: Contre .
+ ard lenvemaon
ele USGL enegy %y
classteienet , :
NEE on powes Semicond ctoy devices.
hane ane 7 yp “ .
) we meumly laud pied into Stupe -
ee ON ovnd controled og
BIT, MOSFET, TART ete
2 centretled ON amd Uncontrolled OFF
Faz sca
‘Leto comount
diédes 9 Tomsateu MOSFET ete -
3
> “ntontwelled On amd OFF.
’ Eq? Diode.
SR + Csilicon Cortbittect
ph 60 fou!
‘ Neonchicctng 2”
eet fier +)
» 2 tewninal,
iim B gun? Pewey—> Te .& alyo Known as Heyaistere «
: i teed FO MPP ply
—> The tewméina tehich connect ed . ce
33 @kted anode nd Ihe tewninal usnich ws os
tO lower e-layut is autted Cothodk (1) e the mral
ushich us wonneetid to low ieee oe
Construction 4 Sef cquivatent Cee”
Pr? —
4 &,
: | 4 |
4 i k
ok
WoRKaNg - workrng ©) SCR Cam be explained dn
8 opereting meds +
}) Revewe blocking mode :
2) Fewvard bloctwsg mede omd
3) Pouvcud Gonclu cing meds -
/ DRevewe blocking mece s- fy thes mecle OM odle Les
negative visit vespect to Cathede amd Junctions
T and Ig axe R. Bamotte 4 J 4 1 F-B moete
There 3 no pes bility. fry Hlewving suesient {70m
Cathodes to amede- But Soret SAP Rowers leaerege
Curent (AI A) flows from Cathods to anecle - ScR ack |
OS O Open Susi tth. |
&) Petward blockwny ttercle ©
Ty tha mele» anecte vu
Sw vwoith respects to Cathede
amd Sun® 9, and Tz ae so
F-Brmece and Sy os HRB
Meda » thee is no posi bility
|jor flowing Curent 4rroro cathode. to Randa,
~ enty
Sra amount gy jouecrdf teaa ceusent flocs
|) aneécle bo Cathede-ScRacth as open Busitch -
prov
2) Poured londucting Hode t
Fn the mothe, aneds a tue
wr'te cathode ) Tunchons
3, ond Ty cu wn FA Gy
Jp RB + BU tn creaneng
the veltage anos cuvnede ¢,
Cathede Cet) we Cam inject *
Some cherge CARERS by app uping Votkage at gate:
tewmwal pue to this high arnount &) voltage :
the width oy Ty cleewerses and punalty Comes
wmnto FB.
SceR act as Closed guitch and
SCR tonclucting 4tag Hugh ormount
busscne flocess [rem amecle FO Cec thede
Chanarc FEALENA A SER 8 thoy Rew
Pelvamterqey m SCRE 1) SR cam blecK high
amount oy veltage (neew fokv)
2) Ak allows the high arnount o} cuent (IKA)
) Lifetrne | SCR ib Large:
3 SCA us a faut aebing Suitchy
5) the Spercabag frequency oy
R ds JOKHA -
Dw Ad Vornboges oy) IN Acatute forced Commedat
4ot bumuing opti Sch +
2) pow amd «
uitchyng les € kas
b%) Feucsad voltage crop ates Rus (> le
the Perpeumanee. c) SCR dan be
Oiraliused by Wing due types 4 cheer cecedenistics +
Static vee ch
ceueberistics — ¢,
WE charachrnsh cé -a - sect al
1) Slahic Chewartuiaia % For Obtauring Mertic tara
fee
wwe J
quice bane cee diagsary That Che clea revrn)
|
. . : i
os Finewn as elomentamry ChE LiAGUM "| |
¥ load |} ——_,
s
a cae -
a : K .
a iE)
Sn Hus amods ancl cathecle anu éonneled 60
vateage 4ourte through load and gat dewnuiral vis
Connected to anethn voltage sourte Hough suites
and Venable susttbor
Canet) t- urhen Sunteh cu pen y anode becemes cut
lors te vathode . 7, and Taw wn RB Ad 3, dl
un FB “ently ALUULE, feanage Ceusent flouss from
eureth Cathode to anedk. Ip ws Poduatty uncug
Hho voltage lol aneclu and catheds at Ponti cel)
voltage sen) J, also tomes dn RB amd coment is
suddenly um Cwanes » This Phenemeney 3b Known as!
oNaltaunche Phenomenc. evnd voltage UW Kmoun us |
as sitense breakdown ve lenge
HOY)? Lohan Steitch wa Bpen, amoce loecomnes +e
worty tahode Ty eG Ty cue din FB amd 3, us
R-B- 1k altows OY Fervard deakage lumens -
Gor Wi) when omeck is ue ud ¥- fe Cathocte “Ee
cdua tty Wn CHAD the Volkage atios anode am
Cathode Ob pouricular vetkage the width g fonn'
us Alttacarses and tome into
i £6 that Votkage 6 Ey}
fos foward buakoun Votkage- in this eon high
Benownk oy cumin plowing tron cue Jo cathede-
twy
dD bynomnic dhroroeknstt a ¢ Determination ay, Voltag
ates ScR amd cument flowreg Hough Scr
auwwng bun ON and tum OFF times ty SCR ne
Vyneien as Ay narnie ehasatupba These ore clave
Wnewn as transient ehoroetistics 6D auntehing !
* Chenactratics -
) Dynamic charackeustG duavn g tuumont proant 9°
SCR: : cs
time taken boy He ScR te Change from Fem »
10 Fom ts Frneren 28 tun Onl Eine @ SCR* ue
> Duwing tha duration dynamic cheracter tics a
Clantitied wink 3 types - .
D Delay ‘tine? Time srecysirect by the
to side from deakage Cuvriné bo (0% Te
Fre aequied by amedte Voltage to fatl from vy
‘te 40%) Va"
2) Rise times aime acquacd by amedg Utuent
to due fom 10% 0) Jo to 10% 9 Ta) time
sequixel toy amode voltage tofau from aoryy
#0 (0% HV," :
2) Spread times iene scqucied by ances Cosont
Mee prom aor % Ja tO Taco time Aeauiud
oot voltage to rat trom joy °) Va to fe
C1-2V <= Vvelertge dat
anede Cutert2
Pynamvic Chasacten.ctics. cluwng tin off
»Pariod 2) SCR
“the fame cluxation ble -SCR chounges prom Foy
40 TBM uy Brown as tua oe Hime 2) ScB-
PNG the Ech is 9 Conducting mede ley w?Mgdng
Sema evmewnt ey Atuuse volkage only We Gun
tum OFF 1 the SCR-
> In this dutahen , dignaymic- reharactaitics 2
two type
|
1) Reverse wueéoursy Lime Ge +The bm taken boy |
the amede lesent to aermious thange Contes Grom
Outer fom T, a Tg 45 Kou as acticuse owed
2) Gate vecoueny Heme 15) :
uniL) time
Thrns. Leulten hy the
—
anode Lucent to domow.
4 ecu Caran brorry
by Aceomblnation pypcess Hee ge
To “2 Known ay
* Va
Gate Accomesy Ame «Tern ON [triggering Methods
“the Paves oy kung ON the ScK ds hewn as
tgqguong +
va when amede becomes swe wer lo Gethode pF) Gz
aw wo Fe and SD is wn BB:
vr Se @n be temes imto FB by wang fou nels,
) ae Veurage aigquting ¢ .
Yo by -
Ge teggerg:
2) temperate (20 thermal higgening-
A) light ©) radiation mggenng « ,
6) Akt iggenng - ,
y Fesvoctiel Veltage daigqenng 2 era thee methoel
by Pacdually wnarcaseng the. foneesd Veleeege
anes anode and cathode at partilelor temp.
vege the width ey J, detcoares omd.comes
unto FB and Ser comes perm FOM&S Fem
Day tnggevog & the Rewrge Bick jw? hamang the
chewacterutics a capacitance t€ it dees not
allew Audden: Changes vin VE Uteige
lee Cj be the fue capaci ecm
Q@ i the cheage caves gu Sy
y is the chargrng Cusscnt
c
vis the fun? veucge -
}
we Knew thak c= & PO Gees
rE ie 1,2 Aa
jo = AG.
Ley) y ag,
ie d reyes COM 4
ie ACG We GAT SE
t -
ae ev i (es constant’) |
Ceawing the Veltcige aes the fon, we cantoa en the OCR
>) Tenpeatioe can thevnrd drigqenog
: ied Motbcige 1,
Ih the anethod lhe tote applied VOMCg |
on dul S, which wg
Appecss across the acucre dias & 2 ab)
. . a wwotsecun Vig
“He Jen? ternpevtune Gwe be then 9 4 heres
: UDA *
Applied voltage sthe qua? levng CD 2
to FB and <4
Ok Particular yatuc y cemes Wa
ON Con ducking, taocle +
4) light @a Aadiation Liggeniog~ Io thes method
SCR Combe tuvord ON by Gavng high encgs Pa
ie Phetont and meetin’
5) Gate Aiqqenng > An this Ingqenincy -Sex Cem be
torn ont by apply dle Ck cyrerl Mortage. SOULE
Ak gate Lemminal * Pepencry tipon the type oy
a MIP, ee es Aawsibicd wnto thee, Epes “They ane
i) DE gate tigqenng -
? Oe eto 3) Putse qeute
YNe gate ay J 27 toicgqenmo,
) eget Eiggerag “the cane:
volkage ywe Cam Lumon the SeR,
bY Cpplyvng of
— In the tngqening » thou s mo Bolebhoy bfuy
power Ckt -Canede to athede] and Contwl cke
Cqecte to cathode) . j
. i
VD fc gale tagewn L= Sn this pre Goss by Loving
ds lection, teams former We Cam ELM On the SCR.
—> Dusring +ue hay Fey cle, %) 3)p Veleage , SCR és us
Conducting sage and: —we. hale Cycle ut & vy 0
tn tha caus | fer stipping cleum the vettags **
| we Acduite Blepclown HE Lehich wircuaoc Hy coph
Pulse GO Magenng? In ther ear ythe €¢R Caw
Chem on by applying pave ar Acgubd tinyTk as a aetable method amd cord ptaetival appl
koa taro | lagyening
(FERRE OLE Lrommutction mcthoeds
the Pr (ae " tuvndng off the Tew ety Benen ay
, Cmimatation
> Tees Classipied nto free type -
) Natal Commatetion © line Comm allon -
2) Peated 4) Load commutation
1) Alatecal OD Line demmutetion = In Hhey proce
t
Mv ScR lan be. bun OF F without LOW, ny Caley
Ue
> Tf ifp sis are g then il autaynatidatles eenics ka
aca at sequler (rive oles vols *
rH ifp o ac then the COR gata Ip be
OFF Stele -
pthés Lupe. q femmudaticn -cs onain ly tae un
Ace FICS
> Forced commatection on toad
; Sn this procas th» Sop Cam he. bum off using
euteynal Clee °
> Dp 3 |p des
> Go by vwvng ent encttwnal Cet
the Ip a atre
Of jp as Ber > ece is wy OFF State >
> This tape q commutation % tmamly wed wn
inverters aund choppers’
1 Po MW) (pc -» Ded
then H Meuer Lomes lo Bee:
etude Rew meric
i Foiced commutation lo clanipied anlo 6 types *
I
} ) Clases s) classt
, 3) came 6) Claas £4 seal ON 2nd OFF Seen) cand
—
8) 6 er
) BIT s~ (Bipelar gw? Taamsiston).
Tra loipolar devices becaure
He
@s clue to the mobility a rey t ctorng o Cunent
eharge wanes 9b uy Q Liment rec mtn |
Depenctiog upon cuusent Alivection these ane ines
two type s- )P-n-p amd 2) 9-p-n ‘nly
P- np
De pending cpan the Applicutiens thine oe connie
an thse tongiqruation
)ecommen Base - - —&, &) Commen Calectof
9). Comme emitter e |
Depending up en Some, advantages commen enitt
Leenjauoaticn oe sited wD all ae |
npigqueahen -Pao BIT cow be _— eeecoe ol
: amelysed ly fury
KefPes ©) characteristics - PES Mev 6 tice
iy :
D Input eharaelinistia and 2) Op hata cterishes
*) Llp Chanaurersties «= (ays
thise tehasiaclircistl Gives the elation bh i
Pacamétiw (Tp,V5 Vee) by vamging the Olp parameu.
ee)
[Vee,> Yee,
1B
Net Vee,
> Vee
2) Olp charcrcterish'es
“Hhuse chewerctoristies @iue the. selation Hus lp
Pasametus Co VE Vee) by Vanying the Jp Panenints
fp
If
Z “n fea eugion Camel foo
kus Le,
° we Tp. :
a 2
ope Te
eet 77 Te
v —> vce
Ceutr Off Aeqion
Cepen switch)
)Maseer s Crretat Once Semiconductor bet ego ect
a framsistor) ;
2k is & unipolar’ cluvice weeoruse cn thes jlowma
tument 3 alue to only amajonty seherrge aa eak
+ Depencting upon tne mayority chowae. ovens theae
Qe ogy tie! Wile two beype '
) n- thennel enhancement MOSFET 4
i ) Channel enhancement naostet .*
te A btigec. Cevmirvaldenice. cond +t 4
C610.) dorirolted Clinica +
es Q VoltagePy t t—__|o
' 1
A 5
n-channel
Conthuction ot MOSFET gy
f- nibshat
mp tn the ge and Bounce. are digpusedl ceith N Seg
J and thue ae made UP oY sikidon andl cloped with
370, Ve ltcge. rN pcm Lome tas len Shu
Lowee evn quls throu Swity ‘5’ % extemal
Vottage sousce its wonneetid betrscen and alrain
Sy Source. Hrrough thecuigh-a Crusent Liniting Avvite
Rp.
then Swite is tloted the vottewgs source
opplied to Q 2G tevmninal lie 0 an
dsounte elrelnic. field odueed upon =
exmumas ond get tevmiral act of a pees
Bipot. > rad amount %
and induces eat a
the srrparte and it keePsecuction a - thamnef atrthe upper pouak
Pe sutshat and this W hanned allows Ihe
yaleLowwog F7] ewienk pom liar to 40irce -
> Th wie unccare ithe ANength t voltage. source
clialn kunent enhamntés 40, ib 4s Catled n-.Charrof
i enhameernmtl MOSsPET - . |
| Gace): when sustteh 4 open, then thiag: 3.0 electri
pield aspund ‘the Gate terminal amd upper poo of pes
ateas open eve and thine. i mo flows gq cee porn
Haan ko sour oe we
| charcutcnin tics: :
Corisider - the equi velent cKE yet mas FET ;
ee clasnigied ante bose
p eG on
° )Tramjo. chaarenslies
* 2) Olp chenacteenishics -
) rhe. chavcreveristia wshi ch
daunent and gate be
dian to source volkaye-
Vos
dai),
qwes the Acleution blw ¢
aoune vollage, ly vausird the
. ‘nF
Vp.
4 Wye,
) M2,
Whee Veer ob the Hueshoid bo tetuce 10 FY btiys
The antrum Vel for Vast ws (1- a”
pe The uhatatterstis ushida gives the actation b/w
| cursuntgliam to Zouree Voltage’1487 Cdnsulatid Gece pipotan -tavnsiston )
By rcomboininy haraclaistice a B97 acl s0sReT
we Get TG BT > Te a voulage tonbrol device *
>It a bipolat devi betause wn thy
cteesent as due to booth electrons and holes «
3 i a truce tomumal denice The teumenals ae
gee ; vepuettor and emiller ae eaui natn
e denghostion: ye, oe
. Mew Ove | hwo - types ened 2% Card volere cies
wo LE RT thy ane F a
. ) Gaack eguivolene Ae -t-
2) Bop Hime cau Valent CEE ImNaa al Maas
| whavevetews es « eee eens
i een Ae 1) Tenn spor Chayattew dics: “hee
ul shh yh
| v, u , Riko ws hich glues the Aclation ship hs te 4
ie bY vamyving Olp paimetu lee .
4g
i Veer
Veen.
i Vee
2) Gly chava istics those oh earactertsties gis the
Acationghip bla Fe |. Vee by hangin g the |
ip prramtin Vee”
fee
GES | Vee“ Vege.,< ed
~ NGED
ae Mey
>
Vee
CE '
| Salianl feos Iq BT ) power Lasser cere irs
Lohen cLarnpastl to Othe clevices - wa
has dow. Awitelimg Hew ¢
2) Good peck tuskent éapalrlity
ha high Jlp wped ance-
dap dusing pnd? ab Less:Consinections ¢ sqer)! : " . 7
_ ; Nae
Inthi enither 4 Sepavated unto two park avd
ddjuscd usith nt Aeqion ond Connected to the ex tOmal
Voltage 4ouee Ver thapugh Cunrut limiting Avxeter
R, amd volbage Aunts Vay ch Connected bh ne
Pau kipa oy enittor cud qccte through & Swi tthe ‘3,
pt Acgion yolrich 4s wconneeted to tecleetoy cs Calted
DN kegion which us .alooue, Lo the pt 4eq won os
| Called ditt ALGION - :
P region which is below tothe m7 aeq wy ws Quad
body Layer
Workings Gage (1) 2 when 's’ Cevwitch) ty closed
am elictrica yield is deucleped acwrs cate
| and Htaek wa p coattel pak apanci tor fa
ded > the VP per part Ba p-layer rol acl &
A N~ Channel:
This n-channel atlous the {low a elbehem
Bom ont aegis do vy Lager:
aa)
.~—» Pue- to the ceppliation oy extern Vollage. bake
Vee s holes ase ungected from pl Aegion Aegion tow
Aqen . .
> Ty athe shrength. 2} elections and pels tp te
ny Acq eon annases it eause the plowing 4 Cumsert
from eollettos to emit
cone r- tohen 6’ ay open, wn this 0a thie vA
mo plow ey tluncnt $som tolector bo eritler Aut
Mo volkage sue ts applied to gat ternal -
sok “Dejunitions :
pf Pate /
i) Holding Comcnt (14)
“equcd 10 tusn OFF thysisloy 2
) he yng Cursent (TL) > “phe guint Ainode Ce
seeped to lum Onl the Cle
th elation hy latching and holdvng use
eral aye a xa
|% » (ato as) Ty | 4) TH» ove
a ——— Th :
mer Gnede cssert
went
nt A
Reprcsentation a Holdurg & latching Cinml |
|pyeee qa musent cn Stelle V-L chara cttu tia
Sa
ra
—~ > TH)
Si.
oO ———p
Veo, Vo, Yeo Va
So
By unceasing the Gate Lussent y the fouversel valk.
Aeros dhe SCR vill decectuc % SCR kLees Wiunt
ame +0 tun ON: .D pur + ogermati congue P fieunsisterr
sug t sikton unilateral suettch:
») See's Sili¢on vontyp! Suidcb
4) sath gatic induction ‘Thysistay -
y b) Ror 2, Revue Control thgyscstor ;
6) Mert Mas Lontrol. Hyysat or’
») G0 + Gate Twn OFF vbhyatue :
8) LASER + Light AHvated Gicon tone
ACF
4) AScR+ Asyochrenous &flicon conbrt he
TWO TRANSISTOR ANALOAY OF SCRE
J) Merten Q SCR eam be analyse by uarng 'wo
tamsister mewn as toe transistor Ancilegy 2)
SCR:
—> by bisecting the micidte) two lagers a SCR
We fom get “the. two KaNedreL mecel HM
AP 40
FR:
aio His the bear a one framsistor ® connected fo. |
coueter 0) other Hamssio Ve Toye Fey
Reuse ticxend qaun por tanecs tv oO
x= a 5 Sej7H Fe Fy —O
7 . i
From the eke | ik is “clea that’
WON)
yoy Sere Py # My) > Ty = Te MO
Equate OM and © ' ao
Te,—N, = Ae, Leo,
Tye Te, (ext) - No, —@
Reverse eument gain yor tranvatou®
sy fe = aATe, +07
2
Dy,e % CIB + Ito, (es Le,-NeJ
ae e ge Pet)
be (Ta 2q)+ Sep —® ce Te GG
equccte and @) .
Be ll-a)- Teo, = Ta FH, Ig +h
Je, — Jeo Loa, Wy Sat % Te + Peay
ene Geo, = %y, Sat My Tq4 Seo,
falrea—%] © % 164 Feo,4 Teo,
Ga > thTe + (Legs Te,)
1 — (dit a)
Case > Tp ap yay=) then amocte cuuient us
upriety and Sc < wn On! Skerte *
Caselti)e- Fy % fAcpational qate cuncnt Tg
| inecasing Tes Tg TP ancl finally SCR Cornswile onl stab - : :
Con Wi > By oinecasing aumese, Leatiags Coront
Cnock coment intases and fratly ScR Comes
wy to Ont Stole:
oS a
| Njeations 9 sae
Applications o BIT + 1) 9 fo Ac Con
Applianons A GBT
4 |
Sutth ack
Wythe net ce e)
1) Ac bo ve convesters
2) Contaotted mectipers -
3 Ae Vootage,controlless de -
verter
2) Ups (eA +
3) smi ps ") OScRUAL OS *
*) chaype: alt ibreat ot
rec to. Ac conuartiw
9) UPS
3) Chopper -
i) Ac motos dure
QuePec Creston.
oa un We Ne
v the pan tess Oy wonton Ee veuedge OH) AE Crier
tn de worteuye (ed cle Cg sent ay Kenan ts UCNp GACH
She tcecedls Wsecl for sertipration aw banwn |
ACK EE!
App ate 2) Gy type transenision Lene
) Speed Centr 6) Ae emetors:
» Hectic oees
4) Bathory chan ung G 5) Ulecticplating »
Ma my
| ANON Keech pes 4
heh gene .
eel Oased on Vp sep rly
L l
wg oo
Lf Paved on ofp Vig i
t — Tt" 4
Pp Hath bp bay Puttgtonty Ued Semicenbrolled
Lectute locee :
J eased OM Consign
t 1
Mid pomt tyr ndge by px
1 Baned on no- v4 {huprislons
L
FauConbo led
eons Conbro Wed /pety
Contest led
6,
Phase amg to bolle t ecluucque
Rechpiers are genosalted| genesaily classified as
wnconyolled cuncl Contre led exe ctipiers-
puimcontrotled neceipiess early consish ©} enctrduied
devices (Ateclos)« In this the efp Vatkeuge Aepenets only
2) magnivivde a) ip volkaqe -
> lon Froid cect fees dona ls 4 Lorbinled howe) CSce)
H) Hh bole veteage. depenels on mmagnitucla 3 ip Vege
K SacUs wl
a By Yarryeng the phase angle we an control the
| Olp Votkage -and this Lechaiaue ds Frown as Phare
jP Ameyle ontotled Feehniqut
owing aw A amngl(ct) Tt is a’ angle geromn the ee geuerer on
which sR is tus ON
Subgle phrse haljiwoue cuctipien ul AO
Tn thas AMcekiyer Srdgle SCR donee clecl on Sones
uth secondamy windang aq tip amd cupttive dead.
tive load,
Sh this bype wy Aceti pie
la siinypliy i(GIOM) We aL
Lonsicoring becuke andi tee,
AS BEIC-
4 Casi) + Duwig ue hats
: p = :
s SCF Ro 5 Gyele y anede beéomres
sput with uuspeet fo cathode and $c8 a vo PBM
7 pnch cee As a pen eevee:
i€ Torcl velvage APplans ALS the thy si tr .|
: Vee 2 Vin reer ioe '
A wt =o% 9 apply gele -ornp use de tagysistos they
SR Cores ror) Porcad bloceurg Modi to Fan
Lerduceingmedc and oe aels ay see
load uyent {Lows inihe cldectiOn oy P- Sek ge
Vlead - p
amd botah S[p voleage appears ateess dhe lea ie
‘ V
ae i Noe a Ve
KeM-
ew
( x Duwng Ve heey cycle pancde
Arius wrt Cob Ocle. cunch SCR “wn
bik an A O-c «Thee ts mo path fey caudiv i}p to O[p sand ethur {otal ‘fp Voge Abaen
acyoss the thy ses tov
re) , , p >:
MeO 7 Vy Vins Io!
ape df . thus al
(eve S pwwng 4 ve hath ry do y lay TR hoe
a... i |
{loeP byorn ‘Ip © ofp avid total i]p voltage apras
acess Loeecl: q
Some proce dine epeals ter the
Wlavepevme +
TO ge
cre Coming cael,
oO
$9
7
¥Y
fh st
Neo 1 rr \
\ : \ stot
| “jn en tonya aq
| aa ae
Ni Nose
| a
N. \ ' : \
° : aot
ee a ON?
‘\ pay /'
Ny i \Y
™ —
EC
Characreristic pararneters 0) Red iio CELA
p teage ofp veckagt +
4 P Vauug s * i Bee) AE
; ' a .
» Whue T= ame period = ae
— Suovd pure ~ starting pot 4 te
Te @r+ a) Ha = 2
3£OEY = Vin spe i
— (* Ginwt Av”
ANG zy z
a.
ein Feoswt
ar Eceewe |
ae =
mx Ca a” 8)
Qn a
= Vm ( tos at)
1
2) Average ofp duvent: Taya * “4
Sag = ie (races)
) Rene ofp volkage® Wyn * (2 peg det
Ame ely P3
°
Vv ee
ams > f a wn : ‘Q
\ an § (vp Bowe dwt)
- Ee
yan J ett det -
Yat
, V8Gel-& we] - Fnawt jr
NGO] - (o- ‘Boed)
| 27 ie
j Mat yr tls2u0t awe
v= Ve sin2&
oe
a Z ee iced ee
[EB ve ar oR
&
_ Ta + 9029") ae
ar on
| 3 anti- —g = Vame
| AYRmS op Guunt 5, ,.> “me
ee cr
mo er 1-4 \_, Wn24
7 oS ( a tae
5) lp ple cre the salio a ppurt clelivercel
to the amitive Aeacl to Wn saving o%
foepg = RO
ik yyy 8 Aabeng
= VMems toms = Vis
Vers 21S viens
Ve + Doms Zs
| 6) fon pactow = eis the neutes oNrms Ho Va yg’
p-Pp= Vams
Vavq
Fes iw Rey Bnae
un On
Vy
oe (1+ cos «)
5) Ripple factor + gt ds depined a8 Te antic G
Q-¢ Component +o de comport
7 Repple is the amount 9) °C Parwent wn
6 Compennt -
uk. RF = Qo c = Vac : Vee
the
ace Wide
‘ x Z We
2T 2 Marne = Vat Velo| ttt a
get Vue Wale Ces y-
. Vade
Ve
Ber Ven) J
pector (ue)? PEG
7 ination
A) scweq oun Wailinale “nenestive, doad bo
5 he
sates O poiuur dolevered tor P “le
VA Aching ef Zecondeyn| | orncumng ©}
Tur. veces [ts
va -ceenncdamy rowidvog %} We
4) Rectipion efpiciency~ Jp ds the Aatio e) Ac pow
to the. acc POL - '
Ne = Pac — Varn Sawa, 5
“Pac Vows “Fang :
ro) PeTVe ge is the Mmanimum cumouwnt FD
dhe thyristor whee ct
for halk foave sechprey 4 PLV™ Vay
MN) eeicuitt tim oF F time (te ge athe cluratio
& time ch which ScR cs wn OFF state
Pye AMR =O : |
>for hath conue Aectipion » &, = QT-T = wt
&
n
ec
| Probl : z
> Nath wave rectipion having An aniston ye toed)
5 Le Supplied bua Qaov , GOKS . cugplyovre 5cR
a piqgeed ot arn @ feng angle BUSS yheer 5 clase uring
ALckigio eificenty wy 2) Pecd& anwerre. vetrage(\)Saar cen erent
ool Given date
=
SF . pls , Vet 230Vy f AICHE y KP4G = H
4
Vv aM
' \ a) =
j ang on [\+tese'] = E ou [i+ €es( (|
Vasa, >82-34V SOUME?
Ye = Vayrng > Yo
x
: Vaug = \PerA
x =
@ (Mune - Vy mp
8
2
cs
Ve
£2-3F x196%
SB Bloat
220.
* Greer, pare”
KOS
it
wo
nw
DPEV = Y= aoe,
3 Ikw elecnc he
fan A Su i Hrrough ame] =
Bangin a 40 rand GO” pele
‘a Leckie Jreater
pe Pelkwe, 1, $7 SOHS. yV- 2a0v-V,
T. KO :
“230 FE
Pye
1 poneyd tela
|
ne x wa power Consume clTy sev
Py wnceaaing the péing ongle Hhe pour ley
the fe sad cig Aceneases >
La (G0 Single pulse sce converey
I~ hace. a woith RL (op Trductve loced s
6 Es J Gnths Sck us veountdls
Wh Sie to Cornlaurrtion
P| Susistive amd wncutiy,
t? it
‘ V.
A i Ss ie 5 Bre leer amd Secordavars
} sof 4 t
.) 4) sd d 4h nL teundung © Te
. a
Fox en oruidet wou uinduian@
aa oe
! erkaring «- Pung +ve haty tye. , In this hai
} stgcle Leumunal pis ue,
| FAM amd act aya o-c
Wtal ilp voltage, APs Aewse hes
wWerrty ‘s' ahd SR
ups tey
fe yVyi, Vin? Vy and Jy 79
Cont (iy ee :
pe HE EK npply qaate am patsy
. thysistor And Hy Pot dems Ln m fom tofem
and att AS a S.c
5 dead tusrent fieasi iy ly aacetiony ey firnenad
p> Mhyrster—> GK) Led
| bot! Hp p Volrage
IR SS
ALppecess aur
Ne = Vin » Foto und v.ely Vigz@ amd vy = 0+ but
{ tuent doumot bitome Sew: because warnedariter
which u pacsent oh) dhe Lead aw nol alloc pueden
F ages Lon bunt +
Ndad eusent teuies seane kvine to betome ev hw
doris Load euent 0 [p Velbacpe aincreanc i
Aaurse dihection
GA) & After becoming Lead Lt
a : >
ale eyck- © lp Velkage ws Lonnce fed to sce:
as tn RBM Gack as AOd-c % total I/p vectage Opp
EAS the thiwtcr :
—? Same pwedure ‘Ae peas for rcrnmaining £4 CU”
WAVE Fowns «-
oorh
Aw
‘io
ws Baw Ve
50 SCR
sent 4
Batension omale (p)e~ Te the and & bem Aufetonte
A are pomt at volte Curent entencled LO 2er0-
le pe et ?Gra toclc porromele
tg
7 10he % 2 '
‘) Average Ofp ye thage 3 Vag * = { F(E) dt
co
Vang > J noe
oon Vn inate et
ol
Men 7 (pete | PP
on Le
qm [ Ctesp - Cord) ]
un [eau - ap]
») Nverage- ofp Curenk:
Vavg 7 2 Mo
aug ?
Re ie On (
See, ~ Cap
i ao
.
2 7 Lage ry
2) $e Ye vettage yt! (Roce) -
ee B 2
ams a Lows
ah
2 [ae or (Snaee)?
i OVE (5 rhage ted)
rerea we (i + wi [snap - Sine &)
= Vn [ Bak pp (inex ~ simpy) Me
oar pr |
4) Rms ofp wusent Tye -> Yams
ee
to
Troms 2 BrA 4 (sinoa- snp.)
yn enw
5) Ccuit tun twen OF fine =
We = QT+A-P <7 t, = ONE cer
ot Problem. 6
B)he. dakching cuuent wpa SOR anthe given OL 4)
atlasmA The minimum pulse Width voagpined tO
kum ON See ds ISUSec- State SK Y ONICD
ool J, =95me , ° a
aon oD) =
ftg7 PS HUSec: vet Ure
Pe per— Terje
@=f Hez4
DME ye }20 (i 5 ere)
ce é + * shnat
o-olan
OITA gga
Ch Gurent o> o-c1ath wo low Hho the latches
ugsant . $0 Ute uw be in OFF Steue -
othe datcning Cursiemt 9) ASR WM fre Y
Amr Hun deteymime mini, duncan &
pile thw ON SE 77 QD? ! =
6 fy"
te I a : 7, oe
| oe Si20 dt ov T
T= Le xpoxe —
QO B 7
ie Gooxt Hy £ = AKIO = BBaSec |
Goo gs
2) A a30v, 5DHa , Sopply as appued ko bangle Puls
SCR Convery which is name at an angle 7) 60”
amd coment Eeeket tog? te pocome BAT then CekCurrtne
Owesade op valtagu errs © |p voltage 8, peal’ um use
Vall cage
g by Comriclonng inductive. (ad hee Re 9-2 &L= gy
\. 2 Vn La COS >) : _
ad ([ (ES COB, £2 nn
an fe
Ow = 230 [cos 6o°- cosnc') = Bp
Xj & a [ : He
oY oi
+8M% — IPP _
we Vag = Vm
\ an
* 230 Top _ = oo.
we e°-§ 4 902. Ts — sin ay
Gtr —___
er
= 107 26yxva = (QGGa8V-
IP hatpocue acctipey with face wheelving Diode
a ea eee |
AR BHO Hb HWW with Induce load
We axe getting —Ve voreciqe acioys the dead Cu —
Us auqesve velodge the Cucrall @fp Ee] a Archies
AI Olecreared + Fer ouLrtominng this alesaduensegeALG GLE tig ETA
Load. aed
pied wyd it al
bypass dicde -
3 vin antipacat
0 BRE chesling
yg kengruen Levert aking dieds (ov
ee | p ret 6. . _
1 whe 7
¢ 3 ae 3 ae
he ale % Le
1 Jy 13: -|
Liat
ue T 5
fer replay (ern den uncluckaince tb ZU.
WORKING Quel)
Dusan tue Wal ligele. C2 fp yee
We with nespece +0 WY and SCF ds ain FET &
ura)
»Potena
Diode win KB. Beth See, Dieds act
and ketal ip vetkage appends aL)
¢
4,79, VpF 0, Var Via .
COM Lt kb (KX < wh 27) ~
At wt =n. , BE py Gat: dropulse, bo Hiysiler
© £ceR Moms fron pen to bas Bt, ee Dedk
Ri dy RB Sep nels ma Sond toad cused
Hews in the diediono, P» Tyo p> 6 Bs21
amd vin ductor Blaiti eharging end tobe ify ©
Volkage appeay avcs the lead
Mo = Mn Le 7. Me F e
xis Care cot < 27)
‘Prwe- mw , i[p vouage busma Bere amd ,
Olp vetrage ds ole Bere and Lnclucte’ EOS
. : a =
Ahtough the path vin clucteY soryI
ain the pow op heat -wy the «
Poucy fy auisipetled
and lacing thes acquan we. heteg Cyele. % Ip
Voitage stemes onto prcerie aarel binds aon Ly
and SCR uw an RBM
Tt discharg eng +My Or Vv I Vin
Cax (ri) « . :
, NC ametbcana ov)
AL wes Qn y windurlor crown plete by atischeng
and suc hay “4 clo. e%) ip Aupply Pars Dp bb pict
and same procedure ee peats fe the acmnenurning
ey eles:
NaLepomngs,
5 uniog ee Wheeling died. ; load cocirentwae pom Vinproud «Hen@. the oucsall ofp 2) the
alte ws dntacaned «
| 2) at oe the We ong 4 voltages -
i 2 the tip P& a -sipsting ce ss Aiaded:
Page ef age» Vv 7 eee)
Te AWA raze ang” + 8
Vv
ang i a 5° nick: ‘duot a
Es = fe cost ]."
Noung? 32 me [14 tos.) ag ae
a) ens cle Voteage 1 i ieee
2) ' Vim § a They ie » dtot -
Vv. =
ms \ aa Gin Soe (Mm Gnwet) “ak *
°
poe tl Mer fy thoes ale
a +.
im [ery Soe oi
Lo) 7 eam
v
oetof hapevreue, puetipier usith PLE load
diy d HWR with RUE load » See ee a
See with RYbtA 4 wnductor amd a volbage .
Sewvee
Fer Avmpliyi@ation we donddyy sincluctamce
ts Boo:
te sul
,
“Workings caneti) (0 swt<)
Pung sve heute ycle 4 je voleage » P WY
rhe Wor ty Ss amd sce is win FAM and aus
“) as Oc:
V Vy = Ey 1,=0, V4.2 V
107
Covet) A < wt oT
by ap Plyrrng qate inpulse ‘bo the SCR
»
] -" rem f Fem amd Scr acl
O38 S.c- :
— T, f° 7|
Leh Full toave scceipiers -
the eenveslus in vohich elp vellage. is Con ber led
uring ave heutf cycle cmd —\ye hac eycle +) the Jp
yeu “these tonvertiu aic Kroon as prull we
tonues teu -
>t. as also fated ay tivo pute onvicalers °
Pulse Noy..e he mo: Puke Present din olp voleage
70) ome tompleti Lycle oy inpue voltag vt tuted)
2 2 mgt secs oy snp #
Depending upon the ConpiGur ction ful auc
| Aechities au ulassified jotd iwe types
Mic port /ni-n Ae chipes >
Baidge Aectipies J ga Rect pias’ |
pe accipiers 2 Mais type q ecrgf ees
_ . ie
ScR's and ene single phase [
& durowll ent Leppeel Se¢ond any tornding- .
PP tut weue mectipior wlth swerisdtive -
htorkaing +
‘M Grew pusv
{ ] Pear aes ng’ +ve b
va | S
Nc ;
cages
4]
Cycle o iJp supply , Phat
sve tor tog.
—-~ fnecke Theypsisloy 7,
becomes 4+ve Ard amcde 9
Ayaistov T, beeemes -ye ‘
n .
a ty > Tis UM FOMands, i
i" wp RBM. ,
i? Peth Hie thes istoss Al as a Oc .
h€ T=O, Vero
J case Ge pt wk = 0
2 Apply gatigcropilye to 7,
at Comes 470M FBM to Fem anc act asa SC.
Cursent flows un he atiection Y PPT 3M 20A
amd tora i[p Volege appears Bevis the lead - |
: At tok = 1 » Ip vowtage- becomes B00 and op
‘is aso 4 hv- : |
Case Cs puring —ve hath ey ele , on this Lane Ral
pue wathty p . Anode a Ta ss -+ve anal es
QM -B whegative - $07, wis 00 ROW ovnel Ty a wo
FB» Both ae asa open eke -
re T20,V,=0
Ge OYE when wok 2 T+a 5 apply g ating vans [i
the thysistor Ty: + So ct is in ECM amd Cursent
| dlews un the direceion 9 Q->7, 20 09K: wet
Dn this oe abo Guus flows win thre Aare alu
s Hat Oy PAlh tye -
he Velbage aesets toad is 4 Ve
Tet 0, Vox5 ou ove
aihysisten T, ty bs REM and ae asa
Awe - AM» ilp voltage -s BaD euncl ofp A oo
Bee + . act
une pwacdecre Acpeala tow the Amnaning “cle
—> we
> lot
— >
>We
> we
Parameters < .
Dpvercge |p voltage + Yayg = t fTpce)-cltot
° (a)
= alae ci. \ th
T= 14-4 ’ Voowg 2 { ft Vop nwt“
Te,
=. ¥V ee
Voang = ¢ m (ces cot )® Yn (1080)
9) Avoage olp cusrent -
Toawg = 1 (i+ lose |
2) tons aaig olp vottage > Vine = [Lf "peer
p arms >] J pte
i ae
: if J
“uns ce 3 Cvmbnwt- dw e
©| ven" [ A . (0210 da
en oo
we CL fos A, (agnoist Bay
iz (Corer gS)
\ ie (3 fot) — b (42 A) J
Ven Wak 4 HN2K
Qn apr 1
1 AND.
> Vn ie 4
\ un
n) fms fp cament © rms ® S/S
eG FWR with R-L lead lon vinuctive lard +
. — (eontinerons, Ney;
r To Uris due cote wine
Heo Sek ancl uncluctme
ia dead 25 Poppe etod at Conlu
w Oh the seeondany trodn dung
ere
- Ky. .
WwewmMnagt- Caney * Ousing sue Melh tyele r¢
— —Y .
LOX obee) + Gn this cluuing tue hay cycle % |
Votkaqe aneds aT) beeomes + uc, and anede a Tr
beternos atue, Tye FRM and To us RBM-
Both at as A Ow
Thee sis no path fer Lead éwnenr ancl vetsage
Begs) Ped us ano. 7
0.70, Ty =0,
EO ba x cot (
: og Km AL we-a apply pred
pie ko T) ovnd) si stad toncveting and Lead ,
wink Hew in the diertion ty POT IM Oh
“a lead or “Grd fetal ifp Volage. app OS abo, Us dood
and To i FEM -
Bp —> POT? m-So-> logd >
Up7 Vin 1 Jp 0+
que (it) (T Myc” a
Jam s - vn
XNG
conver
acl
her oO Sx Bo? >A
a, ten
Gta, > yy -o. From ny 863 aut
~ 7 aS KONE
Gp A= W. =F Vo™ Qi \Vo, we
wT apy wectiicetion
7 ~ WOE
Ih EwR with R-L lead
[biscontintous mode!) o * a
Tn thi Ge, considey load, a Jinvonss\
tument breomes Baro at wt pi tite mock -
p ttae pd wre je lus than *
E cyclo
RY A . fom p fo Tra ic aluuing —ve halt at
T-4 4in Rann ond T, wis wn COM. Ane THyTe a
a
O.c and secd votkage % locel current HVESwot
3 ae
> dol
> Coe
> Cot
Here dead yunent and Load votlaage
oltsCentinuoce grem pte TH & + thes Mects &) Epueien
iy bmowmn as Aigronbnuoey epesuts mM q fete wewe
Acer ier
Parcmetiur t-
) avenge ofp .volkage + Hough Sere dect
Te i al Notug « d (em Binet deol
Yoong = dn FFeesor) “ f
Ma [cosa -cos p
2) Average ao. ne 4
‘) NeRg® Cp evans TMeota = YO Ciesn- cop)
z ae5) prs Olp vokages
J “ere x dwt
3
Vins? J.
ab acest |
2. { a Coot yP_ cal ee PY |
idp =GiN? x)
eo [MF [35 Cp) ~
= Vin (&*- Girep- sory]
an
apy
8) _Revs-op Cueencrtt oy Tams J th
Vino (% a (ome soe) |
ms:
zz Pn ort
inf FW R tet bec hecwng clfocte =
aoe °
Whore cox tii) +e gcook04 » and
indudos stants wharging cund Vig appears CLUS
cant) + Tut x Bes lord >
and total Ofp VEttege APPEL Qt the lad. PSE]
ae 2
Gotti) > P< coe OE PF 1, IPs Orage WP
total ily vatkage appecrss Asi lod asa ue
to theayeest OF TG
TU Ce FBAM
rlWhe Qn, Vinze and
epee fon aemnaureng Cycles *
Sa
) ang 1 S Poy. dt =NO b+ wa)
7). C80 anig 2 Vedavg
Loam § = no [32 “4 + sms)
Ug
4) Coden = (Ws
foutly cork
ip at a, At a '
Care Git) (CR Sc0t
: .
- Sy Anis kepe- the Cothodas) two bhysgtoe 0
Onnected ab Acme potential»
2
» Wnsemrach cl (wo 2 ssyenetneel se CLIO 7
Sin tha type * he Cathodes 0 toe Hye COU an,
stonnectect at ckipgewent potentiate: :
sith scnistive load
Ip Hey Conbyplied Aectipier:
C cuasymnetnca} sock ie)
_ “a eB c ;
Jn 7
; )
Hig
|HO 7 «Fe FE Se indus
ee _ |
KG nw LB) whine to -&
Ty yO gummmeuion 7%
i To
Hreugh wn loming Taps toss (7, @ Tama Curgouy
nyrabors (73% Ty) amd Conrider load Cunent To 2
tonetonk - .
+ Initvotly veonticla eukgowng
um tonduckvog, State and toe Lead eurunt Ly
ak wor=X 5 apply qating pee fo T,% Te, Hen
athese Hhaypsis toxs Stowe vonduching ond tarment Ty
Ztarts ap cuaning -srem BEM to move): Value “Bu Ts & Ty
stark, Lommlutatng and Fy skate decay sro vrary:
Value fo 2e0-
ak wk Uy T) GT Starts Conducting ard load
urvent By amd Ty @Ty cas ain KOM G Ze°0.
and total i[p veteage appears ‘ato the dead -!
ab wk=T , i/p betemes acm amd ofp also becomes
Sew drut Ioad eryrent door Hor beeovney Zorvy awe to
this kead tuners , vollag? acs O]p uincrases ww
Magarus di ection + /
Ak mb mtx , app ating pulse to Te ety
2 WNicvx,
T) & Ty stats Lonmutabng &
: T3% Ty ckats vonduchng t. °
°
Vo. =O
epapistoe Cy HIMCb = TH eM TG Th, Qu wn ROM =) T 20 }
Ta, Ty ore um FOM Tye B,
’ wotz2n , Vin = Vp =O 4 3p FO 7» Ge
: ia voltage and elp voltage, betomen Bevo and
MOAN erwenk choo, mat becone Bum Out 0 the,
dead duaent volkage vin ncayner .in nag ative Kiet,
AE WE = BMF » Ty Ty oe starts worcucton vs
Th, ond Ty — $ tank vommuteting Tr 7
at
p oO
Sane procedure. arpeats bor the Aemetining GYoly
teipitol ane a Condlucting & ele
peng hme 2 > Fe sy bie in Aucords 9
dpning cone euldeing aunts a 20‘I -
(oug oop f Med
ae (BAA C00 4-0)
TAK
cok f
wrap » YN Sinwt clot -
Yo. (Cos & + Coste 0) —O
7
-
)
7
a
oO” _. \ \ Dok
“ si ‘
Tet TH NT Tn4y |
covets coven’ Oe
ep Fully contelied with face sheeting icde 9) RL-loaolx
Veh Fatty co!
- DT
“xte 7
AFWlled wetition with RLE load.
coniilled “wetitior usith RUE load
e m Tg,
| peek ‘an
1 Be
Seswin
t
we
Saye
ot
\ 54994 at
|
No E
cot
So
oe
oa Pith 2g 3am
Comemuahon 4 e4g eee ty Forte, tnd cFcuace, on Ratti pier
conmiden equiverent eke for pple badge
austen with R41 dead and route uincluctomnee-
ee ee mole Bets (59)
8 2p = = Vy Smvot
. n= Vp anvot
4+¢ Apply KVL to
AB UDA yg
Ep-teAt 41 dite _
(a Psat “de ae
P> 2m G els fan —
o's (ae “ae J —®
Noe TI, = Pith We 6 1
é. (oF const « O= dry 4d zs di odie
de de ade ae:
2Ven SIN oot = ts [adh ]
dediy zc Ven sin uot ©
ae Ts. ’
divi .dte = m BS eo) = — Coser
No
To ofr
°
— >
180° Dew,
2
. TNE _
Yen af
Prdeticnl decal ower
These Qn eeitied woto feo types they
Ow > ) Dual Coverters without cen. culalteng Ceugenhs
ubl Ath wer Cy :
8, ee iCemertan wsith 2.culatin Lean
jp IA tonvertirg without. eiaulating eroment, ons,
Ore ronwuntin is din tonditting sage. ata time & total
f. Olp Voltage is die to thy ordutting honvelere
pal wonunky With Citeuladting éscuest
7 =, ae
Ty the two veorwerts, wit conducting at &
by Aatiiing ate oa 180°)a stcntifi’ ound at
—7 Ir u , convetu. cuel a
In dh sone ton Boe uniae
tonuut ate ar
“Ihe samae time. Sebo
ppenenee, Oy lp vettages
wanes an volkcige
total ofp velcge cs Ane Bigg
4) tone © and @ . thi 44
perpduer Some. tix Autatting Luan - -
ee ee| clawnage the thyristor ain orden’ to bn
ste. 28 Curhacting Gunerd conncetad vin 10 He.
AUS in Agies te tonuadi se - a
—> In Hb tonunta frov 21 mo teme olulay blu ragers
a, Teysutou un donuntuUl and @
Boh Aeckipiers:-
Bu using B-p acetigios Lhe no- a) prclses aa
the ©]p volrage Unesecses
—> Bh the purses anesecises pthe olp voltage as
almost £0 Ac native: and the havmentts a6
dus and Losses are aloo Lu:
> toad wunent gets Continous on opercition *
Ty per a Bp Rectifiers |
Depenching ' upon the Mo- 0) SeR- These, dau clamipied
vinto by types
) B-p HNR .
2) 3-9 bopnicoritro ted ALLE fir”
%) ap ae Pally conivoted crsetified -
h) 3h Converkes :
D ng upon dhe no- %y pulses - -hese Wwe
classified: into By pes (2
) S-pulse Conwertit 3) Twelgve Pulse Convert
" ») 6—pube convert, :
2Ln dp ube, eonvertn lp veltage hawing B-pulses
dwg one eomnplete veyele A 7 |p volkege