Complete revision notes for A-Level Electronics covering 26 topics across 6 strands. Aligned with the WJEC WJEC C690QS specification. Covers electronic fundamentals, digital systems, analogue systems, practical circuits, electronics applications, and essential exam technique for circuit calculations and evaluation.
A-Level Electronics develops students' understanding of electronic systems and how they work in the real world. WJEC WJEC C690QS has three components: Component 1 (Discovering Electronics, 40%, 1hr 45min) covering fundamental electronic principles, components and circuits; Component 2 (Application of Electronics, 35%, 1hr 45min) covering digital and analogue systems and their applications; and Component 3 (Practical Project, 25% NEA) involving the design, construction and testing of an electronic circuit. All components test knowledge and understanding, application to circuit problems, and analysis and evaluation of electronic systems.
| Paper | Content | Weighting | Duration |
|---|---|---|---|
| Component 1 | Discovering Electronics | 40% | 1hr 45min |
| Component 2 | Application of Electronics | 35% | 1hr 45min |
| Component 3 | Practical Project | 25% | NEA |
| AO | Description | Weighting |
|---|---|---|
| AO1 | Recall, select and communicate knowledge and understanding of electronics | 30% |
| AO2 | Apply knowledge, understanding and skills to electronic problems and contexts | 40% |
| AO3 | Analyse and evaluate electronic systems, including practical work | 30% |
All 26 topics are aligned with the WJEC WJEC C690QS specification. Component 1 (Discovering Electronics) covers fundamental principles, components and basic circuits. Component 2 (Application of Electronics) covers digital systems, analogue systems and their real-world applications. Each topic page indicates the relevant specification content and provides circuit calculation practice aligned with AO2 and evaluation practice aligned with AO3.
Electronic Fundamentals: Voltage, current, resistance, Ohm's law, capacitors, diodes, transistors and power
Digital Systems: Logic gates, Boolean algebra, combinational and sequential logic, digital design
Analogue Systems: Op-amps, amplifier circuits, comparators and analogue signals and filters
Practical Circuits: Circuit construction, testing, troubleshooting and safety
Electronics Applications: Power supplies, sensors and transducers, control systems and microcontrollers
Exam Technique: Command words, circuit calculations, circuit diagrams, Component 2 and practical technique
Access official past papers and mark schemes:
| Exam Board | Past Papers & Mark Schemes |
|---|---|
| WJEC WJEC | WJEC WJEC A-Level Electronics Past Papers ↗ |