Eduqas A-Level Product Design product analysis and systems: a complete overview

What this theme demands

Product analysis and systems is where technical understanding meets analysis and applied maths. Component 1 tests whether you can analyse an existing product systematically, explain how structures resist forces and calculate moments, work out mechanical advantage and gear ratios, and design and analyse electronic systems including the potential divider. Marks are lost when a product is described rather than judged, when a ratio is inverted, or when a potential divider formula is wrong, and gained by linking the principle to a real product with the correct calculation. This overview ties the six dot-point pages together.

Analysing products and structures

Product analysis examines a product against criteria (function, materials, manufacture, ergonomics, cost, sustainability) using a framework such as ACCESS FM, and disassembly reveals construction, materials and whether it can be repaired or recycled, feeding a better new specification. Structures carry loads through tension, compression, bending, shear and torsion; the moment of a force is $M = F \times d$ in newton metres, and structures are made strong and light by triangulation and efficient cross-sections rather than more material. See product analysis and disassembly and structures and forces.

Mechanisms and motion

Levers come in three classes set by the order of effort, load and pivot; mechanical advantage is load over effort (or effort arm over load arm). The four types of motion are linear, rotary, reciprocating and oscillating, and linkages (reverse, parallel, bell crank) change direction or type. Gears change speed and torque by their tooth ratio (the velocity ratio), cams turn rotary into reciprocating motion via a follower, and pulleys transmit motion with a diameter ratio and can slip to protect the system. See mechanisms, levers and linkages and gears, cams and pulleys.

Electronic and programmable systems

An electronic system is input, process and output. The input senses with switches, LDRs and thermistors, usually in a potential divider ($V_{out} = V_{in} \times \frac{R_2}{R_1 + R_2}$). The process decides with transistors, comparators, logic gates and timers. The output acts with LEDs, buzzers, motors and solenoids, driven by transistors and relays because the control supplies too little current. A microcontroller controls the whole system by a program (often planned as a flowchart), making products small, cheap to assemble and flexible. See electronic input and process systems and programmable and output systems.

How to revise this theme

1. Analyse, do not describe. Judge products against criteria (ACCESS FM) and say what to improve.
2. Drill moments and efficient structures. $M = F \times d$, equilibrium, triangulation and I-beams or tubes for strength without weight.
3. Master levers and ratios. The three lever classes, mechanical advantage, and gear, velocity and pulley ratios with their effect on speed and torque.
4. Know the electronic system model. Input, process, output, the potential divider calculation, and the process components.
5. Understand driving outputs and microcontrollers. Why outputs are driven by transistors and relays, and the benefits of programmable control, then attempt the quiz.