| Revista: | Journal of applied research and technology |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000377624 |
| ISSN: | 1665-6423 |
| Autores: | Chang, C.H1 Cheng, H.L1 Cheng, C.A1 Chang, E.C1 |
| Instituciones: | 1I-Shou University, Department of Electrical Engineering, Kaohsiung. Taiwán |
| Año: | 2013 |
| Periodo: | Abr |
| Volumen: | 11 |
| Número: | 2 |
| Paginación: | 284-291 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Because light emitting diodes (LEDs) have the advantages of dc working voltage, high luminescent efficiency, short ignition time, high reliability and pollution free, they have substituted for incandescent bulbs and fluorescent lamps gradually. In order to simplify circuit complexity, an active clamp forward converter with the sequential color display (SCD) control is proposed to drive red, green and blue (RGB) LED arrays. The proposed converter has zero-voltage switching (ZVS) operations of both the main switch and the auxiliary switch, resulting in high system efficiency. Driving RGB LED arrays sequentially by one converter can save components and reduce cost significantly. Additionally, the pulse-width modulation (PWM) control is applied to achieve a large chromaticity variation. The circuit operations are analyzed in detail and the circuit parameters are designed based on the practical considerations. Finally, an illustrative example is implemented to demonstrate the feasibility and validity of the proposed LED driver |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería electrónica, Diodo emisor de luz, Despliegue de color secuencial, Circuitos electrónicos, Controladores |
| Keyword: | Engineering, Electronic engineering, Light emitting diode, Sequential color display, Electronic circuits, Controllers |
| Texto completo: | Texto completo (Ver HTML) |
