Referenced Items are not available for this document.
As light emitting diodes (LEDs) have become increasingly accepted as a light source in many applications, the demand for dimming LEDs has also increased. Typically LEDs are supplied with voltage source. Dimming is accomplished by adjusting the average current in the LEDs through pulse width modulation of a switch in series with the load. This paper proposes a technique that uses a current source as the base supply. The average current is adjusted with a switch in parallel to the load. This circuit is shown to be effective in increasing the dimming range of the LEDs.
Published in:
Industry Applications Conference, 2004. 39th IAS Annual Meeting. Conference Record of the 2004 IEEE
(Volume:3
)
Date of Conference: 3-7 Oct. 2004
- Page(s):
- 1671 - 1676 vol.3
- ISSN :
- 0197-2618
- Print ISBN:
- 0-7803-8486-5
- INSPEC Accession Number:
- 8191174
- Digital Object Identifier :
- 10.1109/IAS.2004.1348695
- Product Type:
- Conference Publications
About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies
A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2013 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.
