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11th Grade · Technology · UK A-Level
Abstraction and Modelling in Computing
Track 1 of 100 · 7 lessons
7 lessons
Understand and apply different types of abstraction to model real-world systems and manage complexity in programming.
Featured Diagrams
- 1Understanding Abstraction in ComputingUp nextStart
- 2Types of Abstraction in ComputingPremiumNot started yet
- 3Representational Abstraction and GeneralisationNot started yet
- 4Procedural and Functional AbstractionNot started yet
- 5Data Abstraction in ProgrammingNot started yet
- 6Using Abstraction to Model the World in a ProgramNot started yet
- 7Modelling Real-World Systems in ProgramsNot started yet
AC Circuit Analysis and Reactive Components
Track 2 of 100 · 10 lessons
10 lessons
Analyse alternating current circuits containing resistors, capacitors, and inductors using reactances and phasor diagrams.
Featured Diagrams
- 1Purely Resistive AC Circuits and In-Phase RelationshipsUp nextStart
- 2Capacitive Reactance and Frequency DependencePremiumNot started yet
- 3Phase Relationships in Purely Capacitive AC CircuitsNot started yet
- 4Inductive Reactance and Frequency DependenceNot started yet
- 5Phase Relationships in Purely Inductive AC CircuitsNot started yet
- 6Phasor Representation of Sinusoidal Voltages and CurrentsNot started yet
- 7Series RC Circuits and Impedance TrianglesNot started yet
- 8Series RL Circuits and Impedance CalculationsNot started yet
- 9Series RLC Circuits and Net ReactanceNot started yet
- 10Voltage Divider Action with Complex ImpedancesNot started yet
AC Phase Control with Triacs and Diacs
Track 3 of 100 · 9 lessons
9 lessons
Analyse and design AC phase control circuits using RC phase-shift networks, diacs, and triacs for smooth, bidirectional power control.
Featured Diagrams
- 1Triac Bidirectional Structure and Operating QuadrantsUp nextStart
- 2Diac Breakover Characteristics and Triggering PulsesPremiumNot started yet
- 3RC Phase-Shift Networks in AC Timing CircuitsNot started yet
- 4Calculating Firing Delay Angles in Phase ControlNot started yet
- 5Circuit Diagram and Waveform Analysis of a Triac Lamp DimmerNot started yet
- 6Calculating RMS Load Voltage and Power Under Phase ControlNot started yet
- 7Hysteresis and Flash-on Effects in Simple RC TriggeringNot started yet
- 8Electromagnetic Interference and RF Filtering in Triac CircuitsNot started yet
- 9Inductive Load Commutation and Snubbers in Triac CircuitsNot started yet
AC Power, Power Factor, and Energy Transfer
Track 4 of 100 · 10 lessons
10 lessons
Calculate real power, reactive power, apparent power, and power factor in single-phase sinusoidal AC systems.
- 1Instantaneous Power in Resistive AC CircuitsUp nextStart
- 2Calculating Mean Real Power Using RMS ValuesPremiumNot started yet
- 3Instantaneous Power in Purely Reactive ComponentsNot started yet
- 4Apparent Power and Volt-Amperes (VA)Not started yet
- 5Reactive Power and Volt-Amperes Reactive (VAR)Not started yet
- 6The Power Triangle: Real, Reactive, and Apparent PowerNot started yet
- 7Power Factor Definition and CalculationNot started yet
- 8Consequences of Low Power Factor in AC DistributionNot started yet
- 9Power Factor Correction Using Parallel CapacitorsNot started yet
- 10Comprehensive AC Power Calculations for Mixed LoadsNot started yet
AC Waveforms, Power, and Reactive Impedance
Track 5 of 100 · 8 lessons
8 lessons
Analyse sinusoidal alternating currents and voltages, calculate RMS and power values for resistive loads, and calculate capacitive and inductive reactance and series circuit impedance.
Featured Diagrams
- 1Sinusoidal Alternating Current and Voltage WaveformsUp nextStart
- 2Peak, Peak-to-Peak, and Instantaneous Voltage ValuesPremiumNot started yet
- 3The Root-Mean-Square (RMS) Value of AC SignalsNot started yet
- 4Instantaneous and Mean Power in Resistive AC CircuitsNot started yet
- 5Capacitive Reactance and AC Current-Voltage RelationshipsNot started yet
- 6Inductive Reactance and AC Current-Voltage RelationshipsNot started yet
- 7Series RC Circuits and Impedance TrianglesNot started yet
- 8Series RL Circuits and Impedance CalculationsNot started yet
Advanced BJT Switching Topologies and Dynamics
Track 6 of 100 · 4 lessons
4 lessons
Design high-side PNP and Darlington switching circuits while evaluating switching transition speeds, storage delays, and power dissipation.
- 1PNP High-Side Transistor Switching CircuitsUp nextStart
- 2Darlington Pair Configuration and High-Gain SwitchingPremiumNot started yet
- 3Calculating Transistor Switching Times and Storage DelaysNot started yet
- 4Transistor Switch Power Dissipation in ON and Switching StatesNot started yet
Advanced Electronic System Architectures and System-Level Analysis
Track 7 of 100 · 9 lessons
9 lessons
Synthesise complex power, biomedical, and RF electronic architectures while evaluating critical system timing, power budgets, failure modes (FMEA), and competing design topologies.
- 1Synthesising Switched-Mode Power Supply Control LoopsUp nextStart
- 2Synthesising Biomedical ECG Heart Rate Monitoring SystemsPremiumNot started yet
- 3Synthesising Traffic Light Controllers with Pedestrian OverrideNot started yet
- 4Synthesising Ultrasonic Distance and Ranging SystemsNot started yet
- 5Synthesising Radio Receiver Superheterodyne ArchitecturesNot started yet
- 6System Timing Diagrams and Propagation Delay BudgetingNot started yet
- 7System-Level Power Budget and Thermal Feasibility AnalysisNot started yet
- 8Failure Mode and Effects Analysis (FMEA) on System DiagramsNot started yet
- 9Evaluating and Optimising Competing System Diagram TopologiesNot started yet
Advanced FET Switching Topologies and Power Control
Track 8 of 100 · 6 lessons
6 lessons
Design high-side switching, complementary stages, inductive load protection, and PWM power control circuits using MOSFETs and JFETs.
Featured Diagrams
- 1P-Channel Enhancement MOSFETs for High-Side Load SwitchingUp nextStart
- 2Complementary MOSFET Push-Pull Switching StagesPremiumNot started yet
- 3MOSFET Body Diodes and Inductive Transient ProtectionNot started yet
- 4JFET Depletion-Mode Characteristics and Analogue SwitchingNot started yet
- 5Designing MOSFET Switches for PWM Power Control LoadsNot started yet
- 6Design Synthesis and Data Sheet Selection of Transistor SwitchesNot started yet
Advanced Waveform Analysis and Signal Characterisation
Track 9 of 100 · 6 lessons
6 lessons
Apply advanced oscilloscope techniques including phase analysis, pulse characterisation, single-shot transient capture, and FFT spectral analysis.
- 1Dual-Trace Phase Shift Measurements Using Time DifferenceUp nextStart
- 2X-Y Mode and Lissajous Figures for Phase and FrequencyPremiumNot started yet
- 3Measuring Pulse Rise Time, Fall Time, and Duty CycleNot started yet
- 4Single-Shot Capture and Transient Event TriggeringNot started yet
- 5Fast Fourier Transform (FFT) Spectral Analysis on OscilloscopesNot started yet
- 6PC-Based Virtual Oscilloscopes and USB Data AcquisitionNot started yet
Algorithm Complexity Analysis Fundamentals
Track 10 of 100 · 8 lessons
8 lessons
Understand algorithmic complexity using Big O notation and analyze the time and space complexity of algorithms across different cases.
Featured Diagrams
- 1What Is an Algorithm?Up nextStart
- 2Algorithm Efficiency and ComplexityPremiumNot started yet
- 3Big O Notation: IntroductionNot started yet
- 4Constant and Linear Time ComplexityNot started yet
- 5Quadratic and Logarithmic ComplexityNot started yet
- 6Exponential and Factorial ComplexityNot started yet
- 7Space Complexity of AlgorithmsNot started yet
- 8Best, Worst, and Average Case AnalysisNot started yet
Amplitude and Frequency Modulation Systems
Track 11 of 100 · 10 lessons
10 lessons
Analyse and compare amplitude modulation (AM) and frequency modulation (FM) transmitters, receivers, spectral bandwidths, and noise immunity.
Featured Diagrams
- 1Principles of Carrier Waves and Analogue ModulationUp nextStart
- 2Amplitude Modulation Waveforms and Modulation IndexPremiumNot started yet
- 3Frequency Spectrum and Sideband Power in AM SignalsNot started yet
- 4AM Diode Envelope Detector and Demodulation CircuitsNot started yet
- 5Frequency Modulation Principles and Frequency DeviationNot started yet
- 6FM Modulation Index and Bessel Sideband SpectraNot started yet
- 7Carson's Rule and Bandwidth Calculations for FM SignalsNot started yet
- 8FM Demodulation Using Phase-Locked Loops and Ratio DetectorsNot started yet
- 9Noise Immunity, Pre-emphasis, and De-emphasis in FMNot started yet
- 10Comparative Evaluation of AM and FM Communication LinksNot started yet
Analogue Input Transducers and Potential Divider Sensors
Track 12 of 100 · 10 lessons
10 lessons
Design, analyse, and experimentally characterise analogue sensing sub-systems utilising NTC thermistors, light-dependent resistors, photodiodes, and switches.
Featured Diagrams
- 1Thermistors and Temperature-Sensing CircuitsUp nextStart
- 2Characterising NTC Thermistor Temperature-Resistance CurvesPremiumNot started yet
- 3Light-Dependent Resistors and Photoconductive Cell BehaviourNot started yet
- 4Photodiodes and Phototransistors in Light-Sensing ModesNot started yet
- 5Designing Voltage Dividers for Resistive TransducersNot started yet
- 6Analysing Potential Divider Sensitivity and Non-LinearityNot started yet
- 7Switch Sensing Configurations: Pull-Up and Pull-Down ResistorsNot started yet
- 8Experimental Plotting and Parameter Extraction for Optical SensorsNot started yet
- 9Temperature-Responsive Threshold Circuit Design with NTC ThermistorsNot started yet
- 10Multi-Sensor Input Networks and Environmental Monitoring SynthesesNot started yet
Applied Power Analysis, Measurement, and Dynamic Circuit Calculations
Track 13 of 100 · 8 lessons
8 lessons
Apply power equations to real-world circuit scenarios, including measurement loading, time-varying signals, PCB thermal dissipation, and multi-branch power balance.
Featured Diagrams
- 1Measuring DC Power with Separate Voltmeter and AmmeterUp nextStart
- 2Calculating Instantaneous Versus Average PowerPremiumNot started yet
- 3Power Calculations in Pulse-Width Modulated CircuitsNot started yet
- 4Power Dissipation in Potential Divider CircuitsNot started yet
- 5Energy and Power in Variable Load ConditionsNot started yet
- 6Calculating Joule Heating in Conductors and PCB TracesNot started yet
- 7Algebraic Transposition of Circuit Power FormulaeNot started yet
- 8Multi-Branch Circuit Power Summation and VerificationNot started yet