Specification points
WJEC AS Electronics B490QS
94 points in 2 topics, with WJEC's codes and titles.
Codes and titles are read by a script from WJEC's published specification and have not been checked by a person. What each point covers is in the specification itself: WJEC’s specification.
C1 Component 1: Principles of Electronics
- C1.1 System Synthesis
- C1.1(a) Inputs, processes, outputs and feedback
- C1.1(b) Sub-systems of complex systems
- C1.1(c) System diagrams
- C1.2 DC Electrical Circuits
- C1.2(a) Circuit symbols and circuit diagrams
- C1.2(b) Resistance and resistors in circuits
- C1.2(c) Resistors in series and parallel
- C1.2(d) Kirchhoff's laws and Thevenin's theorem
- C1.2(e) E24 resistor values
- C1.2(f) Capacitance
- C1.2(g) Capacitors in timing circuits; series and parallel
- C1.3 Input and Output Sub-systems
- C1.3(a) Sensors in voltage divider circuits
- C1.3(b) Characteristic curves of sensors
- C1.3(c) Voltage divider output voltages
- C1.3(d) Schmitt inverters for signal conditioning
- C1.3(e) Designing sensing circuits
- C1.3(f) Output devices in systems
- C1.4 Energy and Power
- C1.4(a) Power, energy and time
- C1.4(b) RMS voltage and current
- C1.4(c) Power relationships in AC and DC circuits
- C1.5 Semiconductor Components
- C1.5(a) LEDs, silicon diodes and zener diodes
- C1.5(b) Calculations for diode circuits
- C1.5(c) MOSFETs and npn transistors in switching circuits
- C1.5(d) Transconductance of a MOSFET
- C1.5(e) MOSFET and transistor equations
- C1.6 Logic Systems
- C1.6(a) Logic gates, including XOR and XNOR
- C1.6(b) Truth tables for logic gates
- C1.6(c) Combining gates; NAND-gate simplification
- C1.6(d) Simplifying logic: Boolean algebra, Karnaugh maps, multiplexers
- C1.6(e) Designing logic gate circuits
- C1.6(f) De Morgan's theorem
- C1.6(g) Boolean identities
- C1.6(h) Applying Boolean identities
- C1.7 Operational Amplifiers
- C1.7(a) Ideal and typical op-amps
- C1.7(b) Op-amps with negative feedback; virtual earth
- C1.7(c) Op-amp comparators
- C1.7(d) Designing comparator switching circuits
- C1.7(e) Balanced bridge circuits
- C1.7(f) Voltage gain of an amplifier
- C1.7(g) Op-amp circuit configurations
- C1.7(h) Gain of inverting and non-inverting amplifiers
- C1.7(i) Comparator and voltage follower equations
- C1.7(j) Input impedance of op-amp circuits
- C1.7(k) Bandwidth of an amplifier
- C1.7(l) Designing single-stage amplifiers
- C1.7(m) Clipping and slew-rate distortion
- C1.7(n) MOSFET and transistor equations
- C1.8 Timing Circuits
- C1.8(a) RC time constant
- C1.8(b) Exponential charging and discharging
- C1.8(c) MOSFET and transistor equations
- C1.8(d) Finding T, R and C from graphs
- C1.8(e) RC debouncing of switches
- C1.8(f) Properties of monostable circuits
- C1.8(g) Monostable time-delay circuits
- C1.8(h) Astable circuits as pulse generators
- C1.8(i) Designing astable circuits
- C1.8(j) 555 timer monostable and astable circuits
- C1.9 Sequential Logic Systems
- C1.9(a) SR latch from NAND gates
- C1.9(b) Propagation delays in sequential systems
- C1.9(c) Timing diagrams for sequential logic
- C1.9(d) D-type flip-flops: inputs, outputs and uses
- C1.9(e) Sequencing with a 4-bit counter and combinational logic
- C1.9(f) Two-digit decimal counting systems
- C1.9(g) Binary, decimal, hexadecimal and BCD conversions
- C1.10 Microcontrollers
- C1.10(a) Flowchart programs for microcontrollers
- C1.11 Mains Power Supply Systems
- C1.11(a) Half-wave and full-wave rectification
- C1.11(b) Capacitors and loads in simple power supplies
- C1.11(c) Ripple voltage equation
- C1.11(d) Zener-regulated power supplies
C2 Component 2: System design and realisation tasks
- C2(a) Analysing a problem to develop solutions
- C2(b) Developing a design specification
- C2(c) Proposing an electronic system of sub-systems
- C2(d) Predicting how electronic systems behave
- C2(e) Designing, building, modelling and modifying an electronic system
- C2(f) Planning tests and choosing techniques and instruments
- C2(g) Evaluating practical risks
- C2(h) Carrying out tests accurately and safely
- C2(i) Making and recording measurements on circuits
- C2(j) Reporting results using scientific conventions
- C2(k) Evaluating the system against the design specification
- C2(l) Suggesting improvements after evaluation
- C2(m) Designing and programming a microcontroller system with flowcharts