Academic Journal
LEDs driven by AC without transformers or rectifiers
| العنوان: | LEDs driven by AC without transformers or rectifiers |
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| المؤلفون: | Hughes, Robin W., Warner, Mark |
| بيانات النشر: | Nature Publishing Group UK Scientific Reports |
| سنة النشر: | 2021 |
| المجموعة: | Apollo - University of Cambridge Repository |
| مصطلحات موضوعية: | Article, /639/766/25, /639/166/987 |
| الوصف: | We explore the driving of LEDs by untransformed AC. An extreme case is driving 1.9 V threshold (red) LEDs with UK mains, peak voltage 325 V. Commonly, driving is by transformed, rectified (DC) supply with a series resistor (where a significant fraction of the power is wasted) to limit current in the LED. With AC, one can instead reactively limit to a maximum current safe for an LED by employing a series capacitive impedance. Cheaper and simpler supplies can thus be employed in some cases. We analyse such non-linear circuits, and also explore questions of duty cycle and power experimentally. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf; text/xml |
| اللغة: | English |
| Relation: | https://www.repository.cam.ac.uk/handle/1810/316146 |
| DOI: | 10.17863/CAM.63254 |
| الاتاحة: | https://doi.org/10.17863/CAM.63254 https://www.repository.cam.ac.uk/handle/1810/316146 |
| Rights: | Attribution 4.0 International (CC BY 4.0) ; https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.4FFFC503 |
| قاعدة البيانات: | BASE |
| DOI: | 10.17863/CAM.63254 |
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