Castellano Aldave, Jesús CarlosCruz Blas, Carlos Aristóteles de laCarlosena García, Alfonso2024-08-132024-08-132024Castellano-Aldave, J. C., De La Cruz-Blas, C. A., Carlosena, A. (2024) A novel ultra-low input voltage and frequency self astarting AC-DC boost converter for micro energy harvesting. IEEE Sensors Letters, 8(5), 1-4. https://doi.org/10.1109/LSENS.2024.3387272.2475-147210.1109/LSENS.2024.3387272https://academica-e.unavarra.es/handle/2454/50705In this letter, a novel low-voltage junction field-effect transistor (JFET) oscillator with self-starting capability to implement an ac-dc boost converter is introduced. The circuit is transformer free and can operate with very low-voltage and low-frequency signals. In order to operate with positive and negative input signals, a coupled topology of JFETs has been used. The circuit has been built using off the shelf components, and can be used with electromagnetic harvesters, thermoelectric modules, and/or wearable devices. Experimental results with a practical harvester are provided in order to demonstrate the proposed ac-dc boost converter.application/pdfeng© 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other work.Bridgeless AC-DC converterMicro-energy harvestingSensor applicationsUltra-low frequency operationUltra-low input voltageinfo:eu-repo/semantics/article2024-08-13info:eu-repo/semantics/openAccess