# ENGRMAE 60 Electric Circuits (2017-2018)

#### ENGRMAE 60 Electric Circuits

**ENGRMAE 60 Electric Circuits (Credit Units: 4)** Design and analysis of analog circuits based on lumped circuit elements, with emphasis on the use of operational amplifiers. Sinusoidal and transient response. Construction and laboratory testing of analog circuits, and introduction to data acquisition. Formerly ENGRMAE 180 Corequisite: Math 3D. Prerequisite: Physics 7D and Physics 7LD. Mechanical Engineering and Aerospace Engineering majors have first consideration for enrollment. Only one course from ENGRMAE 60, EECS 70A, CSE 70A may be taken for credit. (Design units: 2)

Course based on lecture notes.

1. Learn basic circuit elements and node analysis to solve analog circuits.

2. Formulate and solve ordinary differential equations to study circuit transients.

3. Learn phasor method to solve general RLC circuits with sinusoidal sources.

4. Learn the characteristics of diodes and diode applications such as rectifiers, clippers and clampers.

5. Learn the characteristics and applications of operational amplifiers.

6. Build and test a variety of analog circuits such as passive and active filters, amplifiers, power boosters, etc.

7. Write laboratory reports, analyze data and present results

8. Become familiar with electronic equipment and data acquisition software and hardware

- Circuit elements and voltage node analysis
- Transients in RL and RC circuits
- Sinusoidal response in RL and RC circuits
- Diodes and diode applications
- Operational amplifiers: golden rules; typical op-amp circuits; departures from ideal op-amp behavior
- Transistors: simple transistor model and typical applications

Meets for 3 hours of lecture, 2 hours of laboratory and 1 hour of tutorial each week for 10 weeks.

LabVIEW and Excel are used in the laboratory

Students work in groups of 2 to 3 but write lab reports individually. There are four laboratory projects (3 hours each).

- Lab1. Logging of data using a data acquisition card. Half wave rectifier and band pass filter circuits.
- Lab2. Real time and logged data acquisition. Basic operational amplifier circuits, including the non inverting amplifier, inverting amplifier, and voltage follower circuits. Tracking the output of an operational amplifier in an open-loop configuration.
- Lab3. Operational amplifiers and departure from ideal behavior: input bias current, input voltage offset, and frequency dependency of op-amp gain. The peak detector circuit.
- Lab4. A power booster circuit using a transistor inside the feedback loop of an op-amp. In second part of the lab the students are asked to design, build and demonstrate a circuit for a given application

Contributes toward the Engineering Topics and/or Design experience for both Mechanical and Aerospace Engineering majors.

Typically a design spec is given and a circuit is synthesized, constructed, and tested to the spec, or a given circuit is analyzed, constructed, and evaluated. Fifty percent of all grading in the class is related to design.

- Homework: 10%
- Lab: 25%
- Midterm: 30%
- Final (cumulative): 35%
- Total: 100%

Mathematics and Basic Science: 0.0 credit units

Computing: 0.0 credit units

Engineering Topics: 4.0 credit units

Engineering Science: 2.0 credit units

Engineering Design: 2.0 credit units