The Study Of The LED's Driver Circuit

With the development of economy, needs for applications of LED increase dramaticallyand it is used widely in telecom, mail, finance, traffic. Drive-control voltage is necessary forapplication of LED, because driven Circuit provides good and steady current to make displayof LED suitable for many applications.Based on actual development of LED, the paper chooses right LED as experimentalobject. No matter what type power, it Can't supply power to circuit. Make systemic summaryfor illuminating driven circuit and design driven circuit of jewel illuminating light. Base onchip AMC7150 design a driven circuit. Demonstrate inevitability and feasibility forsubstituting LED for common light according experiments. After considering every aspectsand compare measured results, the result is feasible.The paper discusses lamp-house used in automobiles and makes analysis of substitutionLED for traditional lamp-house in theory and experiment. Based on chip MAX5033C designa driven circuit. Make significative research on theory and actual application of newlamp-house for automobile.The paper analyzes theory of chip and tests the data of chip. The typical relative error rangefor current Control and mismatch is±0.5%. So it achieves reconverted target. The light'sperformance is better and price is cheaper, compared with other lights.