Portfolio of Evidence.
Portfolio of Evidence.
Know the components used in electronic systems.
Learners might research to find the types of electronic components that can be used and divide them into two groups; discrete electronic components (e.g. resistors, capacitors, diodes, transistors) and integrated circuits (ICs) (e.g. with the functions as - timers, counters, logic gates, operational amplifiers (op-amps)).
Be able to carry out electrical measurements on electronic circuits safely.
Learners should develop an understanding of the use of a multimeter to measure current., voltage and resistance. They should use this knowledge practically to safely measure, recognising the correct range to use. Learners could then measure the voltage across a resistor, input transducer and output transducer in an electronic circuit safely.
Be able to safely construct an electronic system to help solve an identified problem.
Learners should be able to identify the input, processor and output of an electronic system. They should be given a problem to solve and draw systems or circuit drawings/diagrams to build an electronic system with an active device to try and solve the problem. Once built, learners might explain how their solution works and consider its limitations.
Examples of problems might include:
Problem1 – It can be dangerous if a passenger in a car opened a car door without the knowledge of the driver. Design an electronic system to automatically switch on an alarm when a door of a car is opened.
Problem 2 – Some local authorities have decided to reduce the amount of street lighting at night. A local home owner wants to fit an automatic electronic system which will switch on a lamp outside his house as soon as it gets dark.
Be able to assess the constructed electronic system safely.
Learners should understand the function, features and characteristics of electronic test equipment. They should be given practical opportunities to carry out electronic testing on the electronic system they have built to solve the given problem. Learners might be able to assess the electronic system safely and explain how it will solve the problem, eventually going on to identify possible limitations and further improvements.