Transistors; Inverters; Power amplifiers; Diodes; Electric power converters; Voltage regulators for electric power; High frequency switches; High-frequency switching power supplies; Circuit boards; Semiconductor chips; Electronic chips for the manufacture of integrated circuits; Semi-conductors; Electronic integrated circuits; Electronic circuits; Printed circuit boards; Semiconductor wafers; Semiconductor devices; Switches, electric; Time switches; Electric current switches; Cut-out switches...