lecture 4: equivalent networks chapter 3 simple resistive...
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ECE 1270 Introduction to Electric Circuits Suketu Naik
0ECE 1270: Introduction to Electric Circuits
Lecture 4:
Equivalent
Networks
Chapter 3
Simple Resistive
Circuits
![Page 2: Lecture 4: Equivalent Networks Chapter 3 Simple Resistive ...faculty.weber.edu/snaik/ECE1270/Lec04_EquiNetwork.pdf · ECE 1270 Introduction to Electric Circuits Suketu Naik ECE 1270:](https://reader030.vdocuments.site/reader030/viewer/2022040912/5e86273734112322d7389bce/html5/thumbnails/2.jpg)
ECE 1270 Introduction to Electric Circuits Suketu Naik
1Resistors in Series
Req=equivalent
resistance
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ECE 1270 Introduction to Electric Circuits Suketu Naik
2Resistors in Series
Req=equivalent resistance
4321 RRRRReq
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ECE 1270 Introduction to Electric Circuits Suketu Naik
3Resistors in Parallel
Req=equivalent resistance
4321
11111
RRRRReq
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ECE 1270 Introduction to Electric Circuits Suketu Naik
4Example 3.1: Find is, i1, i2
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ECE 1270 Introduction to Electric Circuits Suketu Naik
5AP 3.1
(a) Find the voltage v
(b) power delivered the to the circuit the current source
(c) power disspated in the 10 Ω resistor
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ECE 1270 Introduction to Electric Circuits Suketu Naik
6Voltage Divider Circuit
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ECE 1270 Introduction to Electric Circuits Suketu Naik
7Voltage Divider Examples
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ECE 1270 Introduction to Electric Circuits Suketu Naik
8Current Divider Circuit
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ECE 1270 Introduction to Electric Circuits Suketu Naik
9Current Divider Examples
Example 3.3: Find power dissipated in 6 Ω resistor
AP 3.3: Find R such that 4 A will flow through 80 Ω resistor
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ECE 1270 Introduction to Electric Circuits Suketu Naik
10How do you measure Current and Voltage in a circuit?
Use Ammeter to measure the current: connect it in series
Use Voltmeter to measure the voltage: connect it in parallel
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ECE 1270 Introduction to Electric Circuits Suketu Naik
11Delta-to-Y (Pi-to-Tee) Equivalent Circuits
Delta or Pi Configuration
Y or Tee Configuration
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ECE 1270 Introduction to Electric Circuits Suketu Naik
12Delta-to-Y Transformation
Example 3.7: Find power supplied by 40V source
Wheatstone Bridge
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ECE 1270 Introduction to Electric Circuits Suketu Naik
13How do you measure Resistance?
When the bridge is balanced, ig=0 and i1=i3 and i2=ixThen, Rx/R3=R2/R1
If R2=R1 then Rx=R3
Wheatstone Bridge
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ECE 1270 Introduction to Electric Circuits Suketu Naik
14Y-to-Delta Transformation
AP3.8: Use Y-to-Delta transformation to find v