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by: Ronaldo Ryan

46

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17

# ElecFundamentals ETCH213

Ronaldo Ryan

GPA 4.0

BretAllen

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COURSE
PROF.
BretAllen
TYPE
Class Notes
PAGES
17
WORDS
KARMA
25 ?

## Popular in Electronics and Computer Technology

This 17 page Class Notes was uploaded by Ronaldo Ryan on Sunday October 11, 2015. The Class Notes belongs to ETCH213 at Cuesta College taught by BretAllen in Fall. Since its upload, it has received 46 views. For similar materials see /class/221244/etch213-cuesta-college in Electronics and Computer Technology at Cuesta College.

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Date Created: 10/11/15
Introduction to DC Parallel Circuits Online Resource for ETCH 213 Faculty B Allen Parallel Circuit Also called shunt a circuit having two or more paths for current ow 3 T W 0 Online Resource for ETCH 213 Faculty B Allen Voltage in a parallel circuit VSVR1VR2VR3 12 w x 12000 V t 3 R1 12000 39 39lkl39Jhm R2 4mm 12JZIEIEI v X 1 93 33mm Online Resource for ETCH 213 Faculty B Allen Current in a parallel circuit Branch Current A portion of the total current that is present in one path of a parallel circuit Kirchhoff s Current Law The sum of the currents owing into a point in a circuit is equal to the sum of the currents owing out of that same point Online Resource for ETCH 213 Faculty B Allen Kirchhoff s Current Law Junction mm b Online Resource for ETCH 213 Faculty B Allen Iautla Current in a parallel circuit 1T 111213 39d l 39l 39l 12v w xx l I 2 x gt 9 R23 1mm EEDEIhrn R1 DDDhn Online Resource for ETCH 213 Faculty B Allen IT VSRT In a parallel circuit the total current equals the source voltage divided by the total resistance Online Resource for ETCH 213 Faculty B Allen Series circuit and parallel circuit current comparison Series Circuit One Path for Current Parallel Circuit Two or More Paths for Current R7 R h lt lt gt2 1R11ltR2llt39q3 gt R3 lTl7lZl3 lTl7lZ13 Total Current Current through R or Total Current Current through R Current through 32 or Current through R Current through R3 Current through R3 IT l RTT IT M Small Total Current Large Total Current U50 us 0 Larger Resistance Smaller Resistance Online Resource for ETCH 213 Faculty B Allen Branch current IX 2 RTRXIT IX Branch current RT Total resistance RX Branch resistance IT Total current Online Resource for ETCH 213 Faculty B Allen Conductance in a parallel circuit Conductance G lResistance lR In a parallel circuit Total conductance GT GR1 GR2 GR3 Online Resource for ETCH 213 Faculty B Allen Resistance in a parallel circuit 1 Total Resistance 2 1 1 R1 R2 OR 1 1 1 1 Online R eeeee ce for ETCH 213 Faculty B Allen For two resistors in parallel R1gtltR2 a Online R eeeee ce for ETCH 213 Faculty B Allen RT For equalvalue resistors in parallel HullimetelXHH1 gmh il 39g 391 I J 7 Set I 3 J x a 2 x i gt H24 EUUUhm R36 antralm H1 EDEIIZIhm J Online Resource for ETCH 213 Faculty B Allen Power in a parallel circuit PTP1P2P3 Formulas for calculating power P I x V P VZR P 12gtltR Online Resource for ETCH 213 Faculty B Allen Parallel circuit example Online Resource for ETCH 213 Faculty B Allen b CIRCUIT ANALYSIS TABLE Resistance Current Power HVI l a lVH PVxl l I R2ksz vmzov11 P1200mW R2 Vm20VI22mAPZ40mW R320 kQVm20VI31mA P3 20 mW VTV520V PT260mW Troubleshooting a parallel circuit An open component causes ITl A shorted component causes IT i and the fuse to blow causing the circuit to open Variations of a component value may cause ITior ITi Online Resource for ETCH 213 Faculty B Allen This ends Introduction to DC Parallel Circuits Online Resource for ETCH 213 Faculty B Allen

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