240v led string wiring

Mike_in_Wales

New elf
Joined
Dec 17, 2015
Messages
2
I have an led string with a multi function controller which supplies 240v dc to the string. There are three wires coming out of the MFC and then five between most of the LEDs The string has three section of around 130 LEDs in each section. Each section starts with two LEDs without a resistor and then six with resistors (can't get my head round that !!). Can I modify each section of this string to work with a lower voltage ?
Thanks.
 

David_AVD

Bite my shiny metal ass!
Community project designer
Generous elf
Joined
Jun 12, 2010
Messages
4,147
Location
Victoria Point (Brisbane)
You'd have to do a massive amount of chopping and resistor replacing to make anything usable with a regular low voltage DC controller. Just not worth the effort.
 

i13

Senior elf
Joined
Jul 5, 2013
Messages
804
This thread might help.
https://auschristmaslighting.com/forums/index.php/topic,1887.0.html

The reason that there are some LEDs with resistors and some without resistors is that the sections are in series. The resistors lower the current through the entire section which includes the LEDs which don't have a resistor immediately next to them.
 
Top