### CCOG for MT 112A Fall 2023

- Course Number:
- MT 112A
- Course Title:
- DC and AC Electronics
- Credit Hours:
- 4
- Lecture Hours:
- 30
- Lecture/Lab Hours:
- 0
- Lab Hours:
- 30

#### Course Description

#### Addendum to Course Description

Intended as a continuation of the DC and AC Electronics Intro course (MT 111A) or equivalent. The course emphasizes the correct usage of test instruments such as the multi-meter, oscilloscope, clamp-meter, watt-meter as applied to diagnosing and troubleshooting DC and AC complex circuits.

#### Intended Outcomes for the course

Upon completion of the course students should be able to:

- Estimate and measure current, voltage, and power in DC and AC circuits based on using, among other methods, superposition theorem and phasor algebra.
- Test, diagnose, and troubleshoot DC and AC complex circuits consisting of resistors, inductors, and capacitors.
- Recognize the sources of hazard in working with DC and AC power systems that have multiple sources and practice the safety protocols specific to the manufacturing industry.

#### Aspirational Goals

The course is for students who have a basic knowledge of DC and AC electronics, but need to develop more advanced related skills needed for curriculum advancement in the **MT** AAS degree and automated-manufacturing industry.

#### Outcome Assessment Strategies

One midterm exam on paper and weekly quizzes based on the homework should be expected. The final exam in the course will be a practical exam given in the lab. The exam should be based on a combination of calculations and tests, all being used in the context of diagnosing and fixing a given circuit, pre-faulted with a short or an open.

#### Course Content (Themes, Concepts, Issues and Skills)

- Proper usage of the most common test instruments to the electro-mechanical industry such as the multimeter, oscilloscope, RLC meter.
- Testing C and L with the RLC for capacitance and inductance respectively but also for reactance and impedance.
- Using the oscilloscope for AC voltages test, p-p values, RMS values, and phase shifts.
- Using the oscilloscope and the sensing resistor technique in order to measure impedance (magnitude and angle).
- Using the oscilloscope in order to prove the relationship between frequency and impedance.

- Analysis of combinations of series and parallel impedances, including multiple source networks.
- The superposition theorem is used in order to simplify DC circuits with two or more sources.
- The superposition theorem is applied to the simplification of circuits in which there are present DC and AC power sources.

- Phasor algebra is introduced and used as a tool in the analysis and troubleshooting of AC circuits at a frequency in the audio range.
- Both forms of the phasor are introduced, polar and rectangular, and the four arithmetic operations with these are reviewed.
- Total impedance of complex circuits will be calculated using the phasor algebra.
- Diagnosing and troubleshooting RLC-AC complex circuits using phasor algebra.

- Network theorems such as Thevenin and Maximum Power Transfer.
- Power in AC versus DC circuits
- Power generation and transmission.
- True power, reactive power, apparent power.
- Power factor and its significance.
- Power triangle used in assessing the efficiency of an AC circuit.

- R-C and R-L circuit step response.