Basic Electrical Engineering - 1 - Basic...Asst. Prof. Dr. Prapun Suksompong [email protected] 1....
23
Asst. Prof. Dr. Prapun Suksompong [email protected] 1. Basic Concepts 1 Basic Electrical Engineering ECS 203 Office Hours: BKD, 4th floor of Sirindhralai building Monday 14:00-16:00 Thursday 10:30-11:30 Friday 14:00-15:00
Transcript of Basic Electrical Engineering - 1 - Basic...Asst. Prof. Dr. Prapun Suksompong [email protected] 1....
Asst. Prof. Dr. Prapun [email protected]
1. Basic Concepts
1
Basic Electrical EngineeringECS 203
Office Hours: BKD, 4th floor of Sirindhralai building
Monday 14:00-16:00Thursday 10:30-11:30Friday 14:00-15:00
Simple Circuits: Flow of Electrons
2
A Simple Circuit: Flow of “+” charge
3[https://www.youtube.com/watch?v=m4jzgqZu-4s]
Analogy: Water droplet
4
Creating Water Droplet Flow (in Oil)
5
Zuma
6
Current
7
Measuring Current
8
Analogy: Water meter
9
Tiny amounts of dc current can be felt and be potentially dangerous
10
11
Voltage
12
Measuring the voltage across the bulb
13
Analogy:
14
Voltage is very similar to a gravitational force. Think about a bowling ball being dropped from a ladder into a tank of
water. As soon as the ball is released, the force of gravity pulls it toward the
bottom of the tank. The potential energy of the bowling ball decreases as it approaches
the bottom. The gravitational force is pushing the bowling ball through the
water. Think of the bowling ball as a charge and the voltage as the force
pushing the charge through a circuit. Charges in motion represent a current, so the motion of the bowling
ball could be thought of as a current. The water in the tank will resist the motion of the bowling ball.
The motion of charges in an electric circuit will be impeded or resisted as well.
[Irwin, 2015, p.3]
Four types of dependent sources
23
1. Voltage-controlled current source.
2. Current-controlled current source.
3. Voltage-controlled voltage source.
4. Current-controlled voltage source.
Check your understanding
24
Indicate the type of the dependent source in the figure below.
1. Voltage-controlled current source.
2. Current-controlled current source.
3. Voltage-controlled voltage source.
4. Current-controlled voltage source.
To evaluate your understanding…
Check your understanding
25
Indicate the type of the dependent source in the figure below.
1. Voltage-controlled current source.
2. Current-controlled current source.
3. Voltage-controlled voltage source.
4. Current-controlled voltage source.
To evaluate your understanding…
Check your understanding
26
Indicate the type of the dependent source in the figure below.
1. Voltage-controlled current source.
2. Current-controlled current source.
3. Voltage-controlled voltage source.
4. Current-controlled voltage source.
To evaluate your understanding…
Check your understanding
27
Indicate the type of the dependent source in the figure below.
1. Voltage-controlled current source.
2. Current-controlled current source.
3. Voltage-controlled voltage source.
4. Current-controlled voltage source.
To evaluate your understanding…
Check your understanding
28
Indicate the type of the dependent source in the figure below.
1. Voltage-controlled current source.
2. Current-controlled current source.
3. Voltage-controlled voltage source.
4. Current-controlled voltage source.
To evaluate your understanding…
Check your understanding
29
Indicate the type of the dependent source in the figure below.
1. Voltage-controlled current source.
2. Current-controlled current source.
3. Voltage-controlled voltage source.
4. Current-controlled voltage source.
To evaluate your understanding…
Check your understanding
30
Indicate the type of the dependent source in the figure below.
1. Voltage-controlled current source.
2. Current-controlled current source.
3. Voltage-controlled voltage source.
4. Current-controlled voltage source.
To evaluate your understanding…
Check your understanding
31
Indicate the type of the dependent source in the figure below.
1. Voltage-controlled current source.
2. Current-controlled current source.
3. Voltage-controlled voltage source.
4. Current-controlled voltage source.
To evaluate your understanding…
