Electronics (6063)

15个单元 · 55个章节

免费的Electronics (6063)学习笔记，专为GCE O-Level学生准备。下列每个章节都涵盖一个重点主题，附有例题与练习提示，可在 thinka 应用中延伸练习。

Electronic Systems

Simple systems
Electronic systems
Electrical signals

Current Electricity

SI units
Standard scientific notation and prefix form
Conventional current and electron flow
Charge, e.m.f. and potential difference
Resistance and Ohm's law
Measurement of voltage, current and resistance
Electrical energy and power

Resistors

Resistivity
Types of resistors
Colour code
Effective resistance

Circuit Theories

Basic terms in circuits
Series and parallel circuits
Voltage and current dividers
Kirchhoff's voltage and current laws

Alternating Currents

Characteristics of alternating current/voltage
Types of AC waveforms

Capacitors

Structure and working principle
Capacitance
Charging and discharging a capacitor

Semiconductor Diodes

Structure and working principles
Half-wave and full-wave rectification
Light-emitting diode (LED)
7-segment display
Zener diode and its applications
Infrared diodes and photodiodes

Input and Output Transducers

Basics of input and output transducers
Thermistor, light-dependent resistor (LDR) and microphone
Loudspeaker, buzzer, motor and electromechanical relay

Bipolar Junction Transistors and Operational Amplifiers

Structure and working principle
Operating regions
BJT applications
Operational amplifiers

Introduction to Digital Electronics

Analogue and digital signals
Pull up/down resistors
7-segment display module

Basic Logic Gates

Basic logic gates
Universal gates
Integrated Circuits (ICs)

Combinational Logic Circuits

Sum-of-Products Boolean expression
Boolean algebra and Karnaugh Map
Applications of combinational logic

Set-Reset (S–R) Latches

NOR gate S-R Latch
Debounced Switch

Voltage Comparator, Timer and Counter

LM311 voltage comparator IC and its applications
555 timer IC and its applications
74390 4-bit decade counter IC and its applications

Engineering Design Process

Project management
Project realisation
Circuit design and computer simulation
Test and measurement
Documentation of project

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