A.C. THEORY AND ELECTRONICS
GENERAL OBJECTIVES
On completion of this Module, students should:
1. Understand the principles and operation of the p-n junction diode;
2. Understand the characteristics of alternating currents and their applications;
3. Understand the use of transducers as input and output devices;
4. Understand the use of operational amplifiers in analogue circuits;
5. Demonstrate proficiency in the use of logic gates in digital circuits.
TOPICS
1. Alternating Currents
- Frequency, Peak Value and Root-Mean-Square (rms)
1. INTRO-TO-AC-ROOT-MEAN-SQUARE
2. The p-n Junction Diode
- Electrical Properties of Semiconductors (p-type and n-type materials)
- Formation of depletion layer in p-n junction
- Current Flow in p-n junction (Forward-Bias and Reverse-Bias)
- I-V Characteristics of the p-n junction diode
- Half-Wave Rectification
- Bridge Rectifier (Full-Wave Rectification)
- Capacitor Smoothing a Rectified AC Wave
3. Transducers
- Electronic Circuits (Input Devices): Light-Dependent Resistor (LDR)
- Electronic Circuits (Input Devices): Thermistors and Microphones
- Electronic Circuits (Output Devices): Light-Emitting Diode (LED)
- Electronic Circuits (Output Devices): Buzzer and The Relay
4. Operational Amplifiers
- Properties of an Ideal Operational Amplifier (Op-Amp)
- Compare a Real Operational Amplifier with an Ideal Operational Amplifier
- Using the Operational Amplifier as a Comparator
- Bandwidth and Gain-Frequency Curve of an Op-Amp
- Inverting and Non-Inverting Op-Amps
- Negative Feedback on Gain and Bandwidth (Inverting and Non-Inverting Op-Amps)
- Inverting Amplifier as a Summing Amplifier
- Op-Amp as a Voltage Follower
5. Logic Gates
- Describing the function of following Logic Gates:
- NOT
- AND
- NAND
- OR
- NOR
- EXOR
- EXNOR
- Logic Gates: Truth Tables
- Redesigning Logic Circuits (Using ONLY NOR Gates or NAND Gates)
- Timing Diagrams
- Full-Adder and Half-Adder
- Flip-Flops
- Triggered Bistable (3-bitbinary Counter)
- Digital Systems (Home and Industry)
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