Audio, computers, digital, analogue, professional, consumer, design, schematics
Discover FinFET and Gate-All-Around Transistors technology — the advanced 3D architectures powering modern semiconductors. Learn how FinFETs extended Moore’s Law and why GAA (nanosheet) transistors are now taking over at 3nm and below, delivering superior efficiency, performance, and transistor density for AI, smartphones, and high-performance computing.
Discover the fascinating world of Thermionic Valves (vacuum tubes) in Part 3 of our active components series. From the Edison Effect and Fleming’s diode to the triode, pentode, magnetron, and iconic CRTs like Sony Trinitron, explore the history, operation, biasing, and enduring appeal of these glowing devices in guitar amplifiers and classic electronics. Learn why tubes remain preferred by audiophiles and musicians despite modern semiconductors.
Discover the world of power switching semiconductors: from thyristors and TRIACs that powered my first disco sound-to-light system, to modern IGBTs, GTOs, SIDACs, and wide-bandgap (SiC/GaN) devices. Part 2 explores their applications in industrial motor drives, renewable energy inverters, EVs, and switchgear. Learn advantages, disadvantages, timelines, popular components, and critical safety warnings when working with 230V mains power. Essential reading for electronics enthusiasts and professionals.
Discover the most important and essential transistors ever developed, from the 1947 point-contact to modern MOSFETs. Part 1 of our active components series covers essential spares for Arduino/Raspberry Pi projects, the 2N3055/2SC5200 audio power transistors, counterfeit detection techniques, and practical buying advice for hobbyists. Ideal for newcomers to electronics prototyping and repairs.
Discover The Arduino Revolution – from a 2005 Italian student project to a global maker powerhouse. Ian Theunissen reflects on SA electronics history, from 1970s perfboard builds and 1980s home computers to affordable microcontrollers empowering today’s DIYers, CNC projects, and solar automation.”
Discover why NTSC PAL SECAM television standards were created, their technical differences, and South Africa’s late adoption of the advanced PAL-I system in 1976. A complete history with timelines, block diagrams, maths, and the shift to digital broadcasting.