Electronics (6063)

9 sections available · 55 chapters available

Free Electronics (6063) study notes for GCE O-Level students. Each chapter covers a key topic with examples and practice prompts you can continue inside the thinka app.

Electronic Systems

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 & Circuit Theories

  • Resistivity

  • Types of resistors

  • Colour code

  • Effective resistance

  • Basic terms in circuits

  • Series and parallel circuits

  • Voltage and current dividers

  • Kirchhoff's voltage and current laws

Alternating Currents & Capacitors

  • Characteristics of alternating current/voltage

  • Types of AC waveforms

  • Capacitor structure and working principle

  • Capacitance

  • Charging and discharging a capacitor

Semiconductor Diodes

  • Diode 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

Transducers, Transistors & Amplifiers

  • Basics of input and output transducers

  • Thermistor, light-dependent resistor (LDR) and microphone

  • Loudspeaker, buzzer, motor and electromechanical relay

  • BJT structure and working principle

  • Operating regions

  • BJT applications

  • Operational amplifiers

Digital Fundamentals & Logic Gates

  • Analogue and digital signals

  • Pull up/down resistors

  • 7-segment display module

  • Basic logic gates

  • Universal gates

  • Integrated Circuits (ICs)

Sequential Logic & Application ICs

  • Sum-of-Products Boolean expression

  • Boolean algebra and Karnaugh Map

  • Applications of combinational logic

  • NOR gate S-R Latch

  • Debounced Switch

  • 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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