tuna55
tuna55 MegaDork
5/5/24 2:34 p.m.

Tunawife has some LED light decorations she likes. One of the transformers died. 

 

Can you buy one which powers two or more decorations with the same connector?

 

Curtis73 (Forum Supporter)
Curtis73 (Forum Supporter) MegaDork
5/5/24 5:38 p.m.

Amazon has billions of them.  That screw-on two pin connector has been out of vogue for a while, so you may have to twist some wires together.

Also make sure that one power supply has enough amperage to drive the number of LEDs on the circuit.

Geoffrey
Geoffrey New Reader
5/5/24 7:47 p.m.

What Curtis73 wrote.

24 volts with enough current to run both, do the math.

For higher quality than you are likely to find on Amazon, do doubt at higher prices, check both mouser.com and also digikey.com

Keep in mind, polarity matters when you are splicing things together.

tuna55
tuna55 MegaDork
5/5/24 8:19 p.m.

Can I just clip them and hook them to the right polarity? None of the silly nonsense I encountered with those fairy lights from long ago when I couldn't reuse them for some reason?

Curtis73 (Forum Supporter)
Curtis73 (Forum Supporter) MegaDork
5/6/24 1:24 p.m.

In reply to tuna55 :

I do that all the time at the theater for lighting.  Stuff some LED tape in a lightbox to make windows light up and stuff.  You can buy snap-on connectors and stick wires in them, or you can solder directly to the conductors.

Fairy lights are sometimes wired like Xmas tree lights.  Way too many conductors for what you would think is a simple string of lights.  I think they do that for getting the right voltage - wiring in series/parallel so each bulb gets the right voltage, but it's annoying as heck.

Can you snap a pic of the lights themselves?  I can probably walk you through the process.

bbbbRASS
bbbbRASS Reader
5/6/24 2:49 p.m.

You may just need to solder a resistor on between the power and the bulbs, after the switch and fuse, if you want such luxuries!

tuna55
tuna55 MegaDork
5/6/24 10:36 p.m.

Sure looks like two conductors in each. Any good transformers for easy wall wart form factor?

Curtis73 (Forum Supporter)
Curtis73 (Forum Supporter) MegaDork
5/8/24 10:39 a.m.

Plenty of options.  What you need is a switching power supply, and it can be darn near anything as long as it puts out roughly the same voltage as the original, and has enough amperage to support the length you need.  Yours is 24v and 1/4 amp.

I would do something like this: Amazon link    That result was about the 10th one down after a search for "LED power supply 24v"

The little green/black thing on the end is a screw terminal.  Strip back the wires of the conductors of the LED strip and stuff them in the screw terminals.  This particular one I linked is a 1-amp, so it should power at least four strips on the same one.

 

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