Open AccessAC–DC converter using V GS ‐multiplier circuit for LED lighting applications
Author(s) -
Park C.,
Jang K.,
Woo S.,
Yu H.,
Lee J.,
Choi J.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.1290
Subject(s) - voltage multiplier , voltage , led circuit , multiplier (economics) , electrical engineering , diode , electronic engineering , voltage divider , dropout voltage , engineering , computer science , short circuit , macroeconomics , economics
A floating‐voltage DC source is proposed for simple AC–DC conversion. A conventional V GS ‐multiplier circuit is modified with an additional control current signal in order to achieve variable output voltage. By modulating this control signal, the output voltage can track the input one so that the difference between the input and output voltages can be maintained to be constant with respect to varying the rectified input voltage. The proposed circuit is easily adopted for driving a light‐emitting diode (LED) string, which provides a cost‐effective solution for LED lighting applications.