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The document discusses various classes of amplifier operation, including Class A, B, and C, detailing their characteristics and configurations. It covers coupling methods such as capacitive, direct, and transformer coupling, as well as the principles behind radio frequency amplifiers. Additionally, it addresses concepts like equivalent circuits, voltage gain, and efficiency in amplifiers, providing insights into their performance and applications.
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poaver amepli-tion |
Amplifier fers ave Latefiedl as follust |
1) Clarkes of wperetion :
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gored ld Colta dary
current .
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1) Capodtine Conphag ', The Conplory Capacitor
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monk st  FaU phos Copa Done Comping
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vy 3
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On example oF ae f .
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dies withde - wk. tong blocks tae
le To newt stoye
Hg ity Aries former conphing.zx
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pin fhe tthe kay oy first Rrersithoy 8 tae
ere petal Zramiindsy, Becaure 7 Aug
pete Led ae velliges are gare pas
alo Cobied on bt aamphfier
a) Kangen of freee:
1) fadio frequenty amplifiers oper
yore of ZO te. Ho rok ty
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foe yenge above 20k te:
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ac pea it high Q netonrant fumed fenk croit
topating og LC Com poner. ig a
J Pe nrenk 2 -
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ampliHer «
tes jn Lhe
    
 
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AVE,Tor’ Send dames
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ond? an off equivalent Cireik, Becaure y thy
tk har Au food Lins Viz At soad tre sy
an ac Anad Lime.
 
  
 
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one crey B move te Q fork is by Vorging te
Valse of Ry. Fer Very Large Volver of Ry the
7
Rraasiitey gor inte Aatuarction 34 JES current
wren by»
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uy
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inte cctogp 4 he Voltage Us gaven by;
(3) -
 
4
omphrpier The
Ahan Fhe de Celle ty yeristanta, SIM
Vo= Re((RL ushen ar OC Manl Comes in,
mrtankancos operabing pook mover along
tow ie howd Sime. op fig 1d) 2% ST cuorls
fie peak te- Pook Aerstoidol cucyrert and
Vatlonge ove Dhernircd by fe ac Jood Line:
As am hg ay, tee Aatueration amd otsis oo
on He ae host Line Aijger from these on the
de heat Line. Since the ac collector 4
emitter yerrrtanc axe fover tan He6
he peritance , Ane oc Asoc iA much Ateepe.
feat Lines intertectiog of
Te ee Tada hopes akan hie oc nto
Voltage creeing Be
Vea t leren wy
4a =~ %,
The Ac cable ctoy Carrer ts gee by:
iee Ale = Tem Teav®
fae ae Coblaskar Volhnge 4
Vee = BVce = Vee Vee a
cumsbbtiny og ey 4 im age), wea
Veer Veew
Te- Tea = -( teen ee)
Veeme VEEN a)
Ve Cc A
Thin a the equation fey ac fond Sone
estun tee Suramsihery goes dade Anberedinn,
Vee iA Ee >» 2a) ques
Veea, —— ©).
Ve
= ©)
Ea = Lee +
Le cant) = Leg t
tshire eceepe Oe Aahurotion Current
Leas Ae Colaker Cherrert
Le. collects emibber vothage
an qertamtea. Aven bg He collector.
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Yerthen A dyansisker goer take cubtope T=0 7
chen , Vooccutey) = Vee“ +AVvee —A)
and AVcE= At.) Ge)
Vee Ceubepy) = VCER + Tee
since Hee ae food bina ber a higher shape
Joad Line, the. moximum Peak:
i — ly)
fhaw tae. Ae
tho- peak. (MPP) oubpt it alvays fawn than
fee. Aapehy voltage Thee MPP 2 Vc, —W
cor example, ip toe Spey voltage 10%
doe MPP pinratded oudpt i’ len ther lov.
masciminm cubs
pshen the @ pout 14 below Yor Contre of
tae ae Jusad Line, Aha marine peak (MP)
outpt w+ Mpe Lee%e oy Veg, — 12)
gnd Hea maine peak to- peak oXp-t i:
mepo2MPp — q3)
oe (2) 403) ftekermine tte Jargest unclipped
otkpt.
en a. point bat fae Cirbre of He 0
Aimei Teg %e= Veee — 4)a]
The optimum emitter vapytana i given,
Rot% _& a 5)
Vee |
by: Re=
 
 
 
Vee @ eo G8) _ 3.7V.
Seln: = Vee fe =
Ve Rit Re SSB
= Bote SV.
Ve = Vea-Vee = ae
Ve = ;Somé
Tee £ =!
€ Re
=. ™
Teg ten!” A
an KBEIV OY Ver Le(RetPe)+ Ve
Veeg = Ve VE a : < €
Ke. -Ve-T,
%,- Rall@, = 42s, Let Vee el Ref Ry
Mer Vow bebe
oo ige I2V
vez? &“i
Z) Bokermine the 06 homed Line Sotunto
anal cobogs ports in #70 Also, find Aer
muon prok- te Pook entpet voltage .
con! we prrb(i), dhe tromsitter Q printis
Leg (IOmA oS VER a=W.
qo pind, ac S=* ett etion rection aml ctefy ports
%o= Bek Ve
Tecate = Feet teas json + 2 = 2TSmA.
@
Vee coutalp) = Veen t Tea = 1qeBv.
MPP a 20¥.
mp = Tcq # %. = 10/8V SY Vogg= "QV,
ce Mpes 209) =
2) change Rp to Gon wd find |
cet), Veocesagys
os MPP.ta
Me "ne the VIG anplfer, ot ee cae
A amplifier on the ampitHax, ae ny re
peter Phirmaghase tan cgelee Aalts Op IA A
anplifier 4 on foliar’ + tn
poues gre, Ap gefinad a2, ac ovdpel Proxar (Pout)
te the ac power inpe® (Fin):
— Pout a
Ap= Pin.
oxtpd poury, Pouk 1 a4 We meatore The octpd
NM. Amn Wms Volts , Joe ovkpt power is
oAtage va! = 2
erent by: Pou = aS.
L.
Wk T. Vinge Vosk  — G2
UeThe euope voltage in peok-te- peal vetin
i given a WY S Vert ca
wy ee 7 GI :
vi Vppe Ung} 2
pork = e) [ee Eo)
1
a ani
mer =
Yok (mar) = — BRE
phe mek poate: to fork
ushere Mee ;
be RIOT tpt 44 Postimy)
outed vege
poten 0 Bagrsh drver toe amplifiar, The
quiescent power dintigetion 45 Pya= Veegtce-O
Esgicemeg CI)
me de power PPT fe am amplifier by tee
vn rte A' Pde Vee The —W
gk in defined os ae pours mctitul (Pot) A Aix
ac power inpeX (Hae).
ws ye Pet ~ wor, ——®&
Pae
The moamimum |fficiente of OL clans A amplitiey
Uv 2S".Ie
prob!) of, HAL peak: So peak oubpd yoltone is
av db the tapt impeclance rf tre bare
shat 11 Abt powes Jorn in foc.
Vec= OV
I
lA [eo
    
   
Ke
Iron
Vor
 
 
ke
680! bow
Vin, feet joo ged \Gou
2eomy
ei.
Sa Bin cee 2
2 eeom)” 2 193- TH):
qoll6g|floo = Sen
p
m (at)
Qt = (3) = 225mW
& (18)
Ap= 2275 = Jess.
(23°7yo dare pabhpall aoe
40) shows @ beste clan & amplifier, (shea
a troiiter operctes a clan e, a chips ogy
holy a ogte: TO avoid the vembbing chuksrhon,
pe Cam WIE Kise fromittns 4 a perk Pu
gurrangemenX » pmb pr mest Pe. oe tanihey
conducts dovhaly 2 oqle other 14 off J iG
yerha.
terking Quing He 40e help pte sh
dnpuk Volbege, Te pecendary bxiadisy JT has
vee iV Theryjeve , Han appar fre aister a
Ee amd power kremsiater @, OM Of The
eae ed Bazxorgh a, fs ned
+ a
ure - fof he output primary exineling Tg
an amphipice & inverted Voltaye14
erhich is Lromsferner-Compled Arough tae
Jerwd speaker
quriyg tee —We holy egete ge inpet voltage, the.
jeer venerse, Abe Anwer Rromitsr Q,
urns Ov Joe cep Kromiutey 2, hurd ay,
The. howee Kramer amphipies Phe Aignal 4
A erneke haly cycle apperrs ae
an 2 Sine cack Rromstey amplifies
Jovdspeaker Pi jidopen kas
an holy of tee Anp® ogee, Oo
qaceins a complbe gehe f FR Ome fe
Ayres
and Liraclvartages :
Advoxteges amd COT
Advasckoges: ae
7) Callectey efficiency Ma ob
2) more KO outp-t powe? PET
3) pirtortion free ontpet
a : ey Ct uw
os tse hransform:
1) ot vearires mee
b 33 expermve
j ma glerbicas kremittos are oe
LT,
3) unegual aomplipicadion op Abe xu
of Ae Ayal! .
fy) Become F tromfermers whith is we loger
lor.clans 6 perbapall emitter fellnerr:
~~"
otVee
eH) a a
F
Vo &
Vi!
= @& Re Bs
z covalent cet
) ret b) de  CpPer ket free x 44 lower
cube frog. The half power frequency
U yun by The Vetkpe equals 01707 Limes
ie Wy lnm gor The AnetKL BUalis Me
Narrower the Bancleidit q fie amptyier.