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Unformatted text preview: (D P1019 Q7~ \04
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Em» 72.3: Mawanno “:27! NUDE VOLTAGE METHOD Special caseswith a voltage source directly between
two nodes without a resistance in series {the current in the voltage source is not known) Case 1: One node is the reference node replace the node voltage equation {KCLJ at the
"other" node with a voltage source equation Case 2: Reference node is not involved
a. create a supernode
h. write one KCL equation for the supernode c. write a voltage source equation relating the
source voltage to the two node voltages Case 3: Circuit with several voltage sources without
resistors in series see drill problem 3.9 E UATIUN LABEL "voltage source equation" Saw: L3: = LoBV
\rz .. 19.93;on U’CQ =.Z{Ll ( V Mallard EE 2H1 Spring EDGE: MWF 1o:oo — Homework: MAE? Page I of 2 % Homework: MAJ? % You may submit this Homework a total of It] times and receive full credit.
View cumulative cumgleljm status This is similar to problem 3.29 in our textbook Thir question is adopted with pemissien‘ﬁ'em rheptehiﬁhenﬁempmhlem 4.2? efem rexrheek, Electric Cirem'rs. M'Lrsen and Ricard, 5H:
edition. AddisonWesley. £9.95: it is Emandedfor use by resisted students at Iowa State Unitrershy and may no: he usedjbr other
purposes Mohair: the expressed pemu'sst'en of the prehiisher. Use the meshcurrent method to ﬁnd the branch currents in. 1.3. and ic in the circuit below where:
V2 2 64 volts
RI = 3 ohms
R2 = 2 ohms
R4 = 4 13111115
R5 = Li ohms R3 = 43 ohms 1. Find the values of Ihe mesh currents. i1 =i _ _ __ impCTCS.
i2 =i I nmperes. 2. Find the values of the branch of currents.
Note the: {fin and fl: have mine: close to each other med {fyeu compare it as me drﬁ‘hrence between these two mesh currents. then to get the ﬂeettree} of 1": to within 2% qfrhe mine that Meliardwr‘ﬂ compute. you will have re compute the value of the
nee mesh cu rrenrs In severef sign135mm ﬁgures.
I iEl = __ ._ l amperes.
ih= __ _ amperes.
ic= ___ __ _ _i tamperes. Repeat the above calculations if the polarity of the 54 volt source is reversed. 3. Find the values of the mesh currents. hrtps:fieoeonﬁne.ee.iasteteedufEEEDispﬂBmwflwaebqu12.433iTSessionlD=kruen1peL11331:}... 2f? £21333 .——_ ' — Mallard EE. 2G1 Spring RUDEMW}: lﬂiﬂﬂ  Humawur}: MAJ? Page 2 0f? iI= [amparc; i
12= lampems. . 4. Find ti]: valuEs {if the branch nf'mlrrcnts. ia = I ﬂmpgrcs. . . ' 9'9 — _
a ngrse MarenI'd! Copyright @ 159:3— Zﬂﬂ Iowa State Univarqity https:ffﬁccunlinaﬁaiastaiesdufEEEﬂlspUSmwf lDIwabquiZJ; gi ?EE&5im1ID=kruBmpcl_1 (1311).. . EITHDUS 3.10 Use the nodevoltage method to ﬁnd 139 in the: circuit
shown. BUD MESH CURRENT METHOD be — (ne — 1) equations 1. identify the meshes in the circuits (the "windows“) 2. define the mesh currents with direction
(suggest they all be in the same direction) (CW) 3. KVL  sum voltage drags around the mesh
(write the equations in terms of the mesh currents) 4. label each equation 5. the current in any branch may be a combination of mesh currents DHH
3H Mesh a t
Mask 3 ‘. $o\u§~t}m '. 302.54— 6:00:3— L2) +503 10: o 3'C‘”ZL2.z_'—§E_,5 =30
zeL\+ 12%;, «mg =0
“52.x. ”C(OLZ‘F‘ZSLB =0 Maw134.53%» = 22.5w QC: ( L'Z:Z'5A _Ww.w_wm~r_f__m,w_ ...
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 Fall '06
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