Właściwości i badania laboratoryjne wysokoczęstotliwościowego falownika klasy EF z ćwierćfalową linią długą

Some basic properties and laboratory tests of high-frequency Class EF inverter (20 MHz, 400 W, 91.2%) with quarter-wave transmission line on the supply side are presented in the article. The inverter contains one transistor, the transistor voltage waveform is close to a rectangular one and the soft-switching of the transistor is realized as typically in Class E. The applied DE-series MOSFET transistor was controlled by a dedicated, low-loss driver of its own design. The optimization method of the Class EF inverter parameters to maximize efficiency was explained. It was implemented using ANSYS Simplorer software and a built-in genetic algorithm. The concept of the Class EF inverter was positively verified in the laboratory. Examples of transistor voltage waveforms were recorded and selected inverter parameters were determined.