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# dimming multiple 1w power leds with pwn inline dimmer

#1
01-30-19, 12:35 AM
Member
Join Date: Jan 2019
Location: Israel
Posts: 1
dimming multiple 1w power leds with pwn inline dimmer

i am trying to use inline dimmer to dim several 1w high power leds , connected in parallel .i purchased a dimmable 12v 1w driver <img src="https://community.screwfix.com/data/attachments/25/25361-b16aaec8db62a2633d2de3ec9722288a.jpg" width="100" height="83"/> , but it didn't work , the store support told me it's not for pwm, which is what i need.(i swear it worked fine when i did the same thing 2 years ago, ). anyway, i bought the other one , which is pwm 1w , just what i need. but it has separate output for the pwm , so i connected the led plus to the v+ , and the led minus to the pwm. the dimmer worked , but as i turned to knob more , the driver burned. there were 3 led connected in parallel. i did it again and burnt another one. i have 2 left and i must figure out how to do this. this is not a ameteut thing , it is a chainable led lamp system that i intent to market. i didn't expect to have problem with this because , as i mentioned , it worked good before with the first drivers. i need to find the best solution to dim this multiple 1w led with inline dimmer <img src="https://community.screwfix.com/data/attachments/25/25362-2181d2cd7b23e14b750dd1b7106e1bda.jpg" width="100" height="72"/> . i prefer that each one will have it's own dimmable driver connected to it , but if not possible , there will be a main one that all others will connect to.
thanks

#2
01-30-19, 06:17 PM
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 62,022
I'm not quite following you. You are using 3) one watt LED's on a dimmable 1 watt driver.
Sure the driver is going to burn. You need a larger driver.