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Module 5

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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bittercandy2005
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0% found this document useful (0 votes)
10 views20 pages

Module 5

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.

Uploaded by

bittercandy2005
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF or read online on Scribd
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Ho rok ty Hi) Radio fregrerey (RF) omplifiers speroins in foe yenge above 20k te: wii) Tuned RE amplifier, with meant Hot their ac pea it high Q netonrant fumed fenk croit topating og LC Com poner. ig a J Pe nrenk 2 - Shope $90 De ampliHer « tes jn Lhe Cong ting quned RFE amplifier AVE, Tor’ Send dames Every amplifier heat a de equivalent chraik ond? an off equivalent Cireik, Becaure y thy tk har Au food Lins Viz At soad tre sy an ac Anad Lime. a) ac Equivolant ekk Fy ta) Shotos a Voltage divider biarect CvDE) amplifier, 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» ) Banke: uy Anyty KE from Vec FRG ND Herwgh Rex KE we gt, Vee= Te C Ret Re) HME — 1 Ve L, ~ Vee | oe co) Ratte., |VCemo- 2 yolret og Ry crt dine tea 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 He 6 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. Veeg= Yer then 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 Ue The 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°7 yo 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 Voltaye 14 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.

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