LED Christmas lights wirring

How are the LEDS wired . In Paarrel o in series. the reason I ask is becaues I was wondering if I were to cut a few off the end would it cause some grief(a blown fuse in the fuse box) or would the remaining leds be a little brighter.

Reply to
B Ghostrider
Loading thread data ...

Don't blue and LEDs require 4.5 volts while red and green require 3 v?

Bret Cahill

Reply to
BretCahill

I've got a small battery operated set that is wired in parallel. It uses 2 AA or a 3 V wall wart (not included). I got it at Walgreens last year to trim my daughters dollhouse xmas tree. It has green, yellow and red LEDs and using a crude bench supply I get it to fire as low as 1.7 V (barely) bright at 3V brighter at 4.2 V brightest at 5.5 V.

I have no specs on these so I can't guarantee how long they'll last at

5.5V. I've heard some of these are wired series and AC so just converting to DC would make them brighter. I'd just take one and play with it to see how bright you can get it.

I have played with some of these low voltage LEDs from China that wouldn't take more than 2.5 V. Weird but I blew 3 of them before I figured it out.

Richard

Reply to
Richard

They are in series, although longer strings may have series subsets connected in parallel with each other.

I would not modify them. I have seen one model of the "Forever Bright" brand (last year) that had especially severe flicker even for that brand, and only a small percentage of each AC cycle had instantaneous voltage exceeding the voltage drop of the LEDs. The current would increase greatly if just a few LEDs were replaced by a short.

- Don Klipstein ( snipped-for-privacy@misty.com)

Reply to
Don Klipstein

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.