Electronic apparatus and appliances Design and construction 277 Electronic circuits 208 Maintenance and repair 112 Electronics 111 Power supply 94 Solid state electronics 84 Testing 75 Materials 66 Electric apparatus and appliances 53 Reliability 43 Automatic control 36 Electronic packaging 34 Switching power supplies 33 Protection 32 Electronic circuit design 31 Microelectronics 30 Thermal properties 28 Electromagnetic compatibility 27 Semiconductors 26 Amateurs' manuals 25 Data processing 25 Temperature control 25 Transistor amplifiers 25 Standards 24 Electric circuit analysis 23 Household electronics 23 Electric discharges 21 Electronic industries 21 Electronic instruments 20