@article{article, title  = {{PLL controller for achieving zero-voltage switching (ZVS) in inductorless half-bridge drive piezoelectric transformer resonant power supplies}},

 publisher = {{Institution of Engineering and Technology (IET)}},

 url = {{https://eprints.whiterose.ac.uk/id/eprint/130264 }},

 year = {{2019}},

 month = {{6}},

 author = {{Foster MP and Davidson JN and Stone DA and Yappa RS}},

 doi = {{10.1049/joe.2018.8063}},

 volume = {{2019}},

 journal = {{Journal of Engineering}},

 issue = {{17}},

 pages = {{3639-3642}},

 note = {{Accessed on 2025/11/01}}}