@ARTICLE{Mikolajewski_Mirosław_A_2014, author={Mikolajewski, Mirosław}, volume={vol. 63}, number={No 4 December}, journal={Archives of Electrical Engineering}, pages={621-633}, howpublished={online}, year={2014}, publisher={Polish Academy of Sciences}, abstract={In a high-efficiency Class E ZVS resonant amplifier a matching and isolation transformer can replace some or even all inductive components of the amplifier thus simplifying the circuit and reducing its cost. In the paper a theoretical analysis, a design example and its experimental verification for a transformer Class E amplifier are presented. In the experimental amplifier with a transformer as the only inductive component in the circuit high efficiency ηMAX = 0.95 was achieved for supply voltage VI = 36 V, maximum output power POMAX = 100 W and the switching frequency f = 300 kHz. Measured parameters and waveforms showed a good agreement with theoretical predictions. Moreover, the relative bandwidth of the switching frequency was only 19% to obtain output power control from 4.8 W to POMAX with efficiency not less than 0.9 in the regulation range.}, type={Artykuły / Articles}, title={A Transformer Class E Amplifier}, URL={http://www.journals.pan.pl/Content/85010/PDF/08_paper.pdf}, doi={10.2478/aee-2014-0043}, keywords={Class E amplifier, resonant inverter, DC-DC converter, transformer, leakage inductance}, }