Unit 1 - Electronic principles: 26 Sine wave driven circuits 27 Transformers and power transfer 28 Semiconductors, active devices and transducers Unit 2 - Test and measurement: 29 Meters and data 30 The analogue oscilloscope 31 Test and measurement 32 Rework, repair, reliability, safety and European Union directives Unit 3 - Analogue electronics: 33 Direct current power supplies 34 Analogue amplifiers 35 Oscillators and waveform generators Unit 4 - Digital electronics: 36 Logic families and terminology 37 Sequential logic 38 Digital communications 39 Test equipment and fault-finding Answers to multiple-choice questions Index