EE 220 Chapter 4 Examples

EE 220 Chapter 4 Examples - EE-220 CIRCUITS—I Chapter #...

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Unformatted text preview: EE-220 CIRCUITS—I Chapter # 4- Examples / 2 KCL. 4297?”).371Eai j 12:} .1— Ei__"}l ~17 8, _ FIGURE P 4.2-1 ’_ E PALS-4 Determine the node voltage 11;, forthe circuit of Figure 5’” ‘ - P 4 34 Answer: vu = 4 V _ E12) p 4.4-5 Determine the value of the current 1'x in the circuit of Figure P 4.4-5. ' a Answer.'ix=2.4A t! ‘ I: H v- - FILE-1 Determine the mesh currents: i1, i3: and 1‘3, for the circuit shown in Figure P 4.5-1. Answers: 1‘, = 3 A, 1'; = 2A, and 1'3 =4A KUL: ii; i: 2EJ+9CL‘,-—LL2.) +3075; 2’3 , . \ :“U i§+ 305-bp 4-5 (Lily :0; mtg—was» ‘ fit—j “3: 7’?” +9§L“bi3 Jig-lg" '@ é) P4.E-3 Find v2 for the circuit shown in Figure P 4.6-3. Answer: v2 = 2 V -—--—_—. ‘—-' f ..—__-—- ‘-—.._ +02“] 509 3 05A g b ..._=,.._____.——_a FiGUIiEP4.6—3é W: E 13mE'A/P\ ___} 1:; i..- KVL +0 .T L, ’63,: am,— w.- P 4.7-4 Determine the mes in Figure P 4.7-4. Answer: il1 = _24 mA FIGURE P 4.7—4 WSDilf 1S:_£D a): $03,] +29 32:3’PD “:3 ‘57” 3D[ PIS) +20i}: #50 Dr-{LA {3.13: +DJL— Deg —: —19»'/7fi/3r : 2V l ‘f :11; Kati. L ‘9 up ..— 11 current i,1 for the circuit shown 12%: m: (a egg-— L; KW. my“? MM — 1%; +3 U5: 4—ng +3 fimfiumé; LE] +5493 L 5—K“? D:;_212°x>b far In. ‘_. w —@ D ‘2 \ .. La,” @ @D P 4.1 0-2 A11 old lab report asserts that thenode voltages ofthe circuit ofFigLu'e P 4.10—2 are 11,] =4V, vb =20V, and vc =12V, Are these correct? SP 4-3 The voltages v5, vb, vc, and 11d inFigure SP 4-3 are the node voltages corresponding to nodes 3, b, c and d. The current I' is the current in a short circuit connected between nodes b and c. Use PSpice to determine the values of Va, vb, we, and Va and of 1'. FIGURE SP 4—3 The PSpice schematic afier rumning flie simulation: O‘tur'dc E‘ch r The PSpice output file: INCLUDING Sp4fi2-SCBZEBMTICLEH ‘1‘ source SP4_2 V__V4 O N01588 12Vdc R R N01588 N01565 4k V V : 5 N01542 N01565 OVdc RHRS 0 N01516 41: V V6 N01542 N01516 SVdc .lb. Ijl 0 N0 1555 DC ZmAdc 1‘12 0 N01542 DC lmAdc VOLTAGE SOURCE CURRENTS NAME CURRENT V_V4 -4.000E—03 V_V5 2.000E—03 V_V6 ~1 .0001-3—03 From the PSpice schematic: Va = —-12 V, 121, = vc = 4 V, vd = -—4 V, From the output file; i: 2 IDA. . _ .., __ .. , .. 7 d r . __k 7 ‘— ‘h-—-——_-_._.__—-._ ~DP A wiring circuit for a special lamp in a home is shown in Figure DP 4-3. The lamp has a resistance of 2 8'2, and the de- signer selects R= 100 $2. The lamp will light when I 3 50m but will burn out when I > 75 mA. (3.) Determine the current in the lamp and determine if it will light for R =100 Q. (h) SelectR so that the lamp will light but will not burn out if R changes by ill} percent because of temperature changes in the home. 509 R L I 5V 1 I FIGURE DP 4—3 A lamp circuit. ? mp $39 J KHL‘l—DW WNW; KVL—i-o any-e} imeM' QR} L99 w Else: +55%; 90 FR tribe-$1 ‘ _L. I Caricme / 'LGJPMMCZ? Rzgax/l/l: MC: R252ng 1 ,_ —$+g:> L’,+em>( div—:9 3—D __.._ _LU 2434.15 941—14350 CI—L‘D :73 rt“); / a": 2: 52(3ng W7C} Maze :1 [Km 1%. SW63... mi L'an i3%+3§3(§£ ha“) flkp, .3.’ (Vi/VJ.“ I I a) Use the mash-cm metide find the puma: —:-.-——" daliwrexituthailflreaismrhthecficuitjn § _ Pig. 94.42. ' ' " b) Whatparcmmge oftha tutal poWer developed in the :ircm'xis dalivaredtn the 2 52 mar? mph- _—n"—'---:—:-=—”‘-'———\~— E51“- .1 7 ,' if 1W???) 0 ilk—94W ( if: 'W - mUb—ngiffigiiliibégz 2x (w ____L"2_*‘-£ =- QBWC‘éH) ...
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EE 220 Chapter 4 Examples - EE-220 CIRCUITS—I Chapter #...

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