Download Slide - [email protected]

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts
no text concepts found
Transcript
305221, 226231
Computer Electrical Circuit
Analysis
การวิเคราะห ์วงจรไฟฟ้าทาง
คอมพิวเตอร ์
3(2-3-6)
ณรงค์ชยั
มุ่งแฝงกลาง
คมกริ ช มาเที่ยง
สัปดาห์ที่ 3
Ohm’s law and Kirchhoff's laws
Outline
1
Objectives
2
Kirchhoff’s Current Law
3
Kirchhoff’s Voltage Law
4
Voltage & Current Division
5
Assignments
Objectives
 เพื่อให้ นิสิตมีความรู้ ความเข้ าใจเกีย่ วกับ Kirchhoff’s current
Law
 เพื่ อให้นิ สิ ต มี ค วามรู ค
้ วามเข้า ใจเกี่ยวกับ
Kirchhoff’s Voltage Law
 เพื่อให้ นิสิตมีความรู้ ความเข้ าใจเกีย่ วกับ Voltage และ Current
Division
Branch
 Matthew Sadiku, define A
branch represents a single
element such as a voltage source or a resistor.
 William Hayt, define a branch as a single path in a network,
composed of one simple element and the node at each end of
that element.
Node
Matthew Sadiku, a node is the point of connection
between two or more branches.
William Hayt, a point at which two or more elements
have a common connection is called “a node”.
=
Path & Loop
 William Hayt, The set of nodes and elements that
we have passed through is defined as “a path”.
 Matthew Sadiku, A loop is any closed path in a
circuit.
William Hayt, If the node at which we started is the
same as the node on which we ended, then the path
is, by definition, a closed path or “a loop”.
Branches, Nodes, Path and Loops
=
Outline
1
Objectives
2
Kirchhoff’s Current Law
3
Kirchhoff’s Voltage Law
4
Voltage & Current Division
5
Assignments
Kirchhoff’s Current Law
 Kirchhoff’s current law (KCL) states that “the
algebraic sum of currents entering a node (or a
closed boundary) is zero”.
KCL Example
Outline
1
Objectives
2
Kirchhoff’s Current Law
3
Kirchhoff’s Voltage Law
4
Voltage & Current Division
5
Assignments
Kirchhoff’s Voltage Law
Kirchhoff’s voltage law (KVL) states “that the
algebraic sum of all volt-ages around a closed path
(or loop) is zero”.
Determine ix and vx ?
Determine ix and vx ?
Determine vR2 and v2 ?
Determine vx in the circuit ?
Determine vx in the circuit ?
Determine i and vo ?
Find currents and voltages in the circuit ?
Outline
1
Objectives
2
Kirchhoff’s Current Law
3
Kirchhoff’s Voltage Law
4
Voltage Division
5
Assignments
Series Resistors and Voltage Division
Equivalent of Series Resistors
 The equivalent resistance of any number of resistors
connected in series is the sum of the individual resistances.
Voltage Division
Outline
1
Objectives
2
Kirchhoff’s Current Law
3
Kirchhoff’s Voltage Law
4
Current Division
5
Assignments
Parallel Resistors
The equivalent resistance of two parallel resistors is
equal to the product of their resistances divided by their
sum.
Equivalent Conductances
 The equivalent conductance of resistors connected
in parallel is the sum of their individual conductances.
Current Division
Outline
1
Objectives
2
Kirchhoff’s Current Law
3
Kirchhoff’s Voltage Law
4
Voltage & Current Division
5
Assignments
Assignment # 1
In the circuit shown in Fig. 3.51, the resistor values
are unknown, but the 2 V, source is known to be
supplying a current of 7 A to the rest of the circuit.
Calculate the current labeled i2.
Assignment # 2
The voltage source in the circuit of Fig. 3.52 has a
current of 1 A flowing out of its positive terminal into
resistor R1. Calculate the current labeled i2.
Assignment # 3
Referring to the circuit of Fig. 3.69, (a) determine
the two currents i1 and i2; (b) compute the power
absorbed by each element.
Assignment # 4
Determine a value for the voltage v as labeled in the
circuit of Fig. 3.70, and compute the power supplied
by the two current sources.
Assignment # 5
For the circuit presented in Fig. 3.75, determine the
current labeled i by first combining the four sources
into a single equivalent source.
Assignment # 6
Obtain v1 through v3 in the circuit of Fig. 2.81.
Assignment # 7
Find I and Vab in the circuit of Fig. 2.82.
Assignment # 8
Determine io in the circuit of Fig. 2.84.
Assignment # 9
Find Vx in the circuit of Fig. 2.85.
Assignment # 10
Find Vo in the circuit of Fig. 2.86 and the power
dissipated by the controlled source.
Related documents