1. ECE 1270: Introduction to Electric Circuits
Lecture 1
Introduction
Chapter 1
Circuit Variables

2. ECE 1270: Introduction to Electric Circuits
Overview of Electrical Engineering
Power Systems (Classical ECE)
Generators: nuclear,
hydro (water), thermal (coal,gas)
Power Lines: transmission lines, distribution
Grid System and Managment: efficient distribution of electric power, redundancy to avoid black outs
ECE 4900 (Power Systems (?)) by Dr. Larry Zeng

3. ECE 1270: Introduction to Electric Circuits
Overview of Electrical Engineering
Control Systems
Regulate and control processes
Control what? temperature (thermostat), pressure, flow rate (oil refinery), fuel-air mixture in cars, motors, doors, switches (everywhere), autopilot, sprinkler system and irrigation system
ECE 4100 (Control Systems) by Dr. Larry Zeng

4. ECE 1270: Introduction to Electric Circuits
Overview of Electrical Engineering
Computer Systems
Computing: Pocket calculators, computers, supercomputers, embedded processors
Processors: Central Processing Unit (CPU), Microcontroller unit (MCU), Digital Signal Processor (DSP)
ECE 3610 (Digital Systems), ECE 3710 (Embedded Systems), ECE 4710 (Real-Time Systems) by Dr. Fon Brown

5. ECE 1270: Introduction to Electric Circuits
Overview of Electrical Engineering
Signal Processing
Transform electric signals into information: process data from satellites, CT scanners, MRI, smart phones
ECE 3210 (Signals and Systems), ECE 4210 (Digital Signal Processing) by Dr. Larry Zeng

6. ECE 1270: Introduction to Electric Circuits
Overview of Electrical Engineering
Communication Systems
Generate, transmit and distribute information: radio, cell phones/smart phones, satellite communication systems, radio telescopes, wireless communication
ECE 3110 (Microelectronics I), ECE 3120 (Microelectronics II) by Dr. Justin Jackson, ECE 4410 (Communication Circuits and Systems) by Dr. Chris Trampel

7. ECE 1270: Introduction to Electric Circuits
Overview of Electrical Engineering
Sensors and Sensor electronics: gather data to be processed later
Electromagnetics: classical study of electrostatics (capacitors), magnetostatics (inductors) and Maxwell’s equations

8. Electrical Engineering: Multidisciplinary Field
Smart Cars and Autonomous Driving

9. Electrical Engineering: Multidisciplinary Field
Smart Homes and Energy Efficiency

10. Electrical Engineering: Multidisciplinary Field
Biomedical Engineering and Health Improvement
Ref: STMicroelectronics

11. Electrical Engineering: Multidisciplinary Field
Airplanes and Safety

12. TABLE 1.2 Derived Units in SI
Common SI Units
TABLE Derived Units in SI

13. TABLE 1.3 Standardized Prefixes to Signify Powers of 10
Power of Ten
TABLE Standardized Prefixes to Signify Powers of 10

14. Electric Effects: Voltage and Current
Positive Charge
Negative Charge
Voltage is due to separation of Charge=Electric Force
Current is due to motion of Charge=Electric Flow

15. Figure 1.5 An ideal basic circuit element

16. Passive Sign Convention+ i -
Current flows from positive terminal to negative terminal (positive charge moves from positive to negative) It can be a Resistor, Capacitor, Inductor or in general any circuit element

17. Assessment Problem 1.4

18. Figure Power

19. Problem 1.15