LED Driver Wiring Problem

[Aubreylee]

Hello, folks
Anyone know what type of driver i would need for 3 x 1w 350 m/A leds wired in series.
I search the video to watch the person who wired these and get theoretical support from LED Driver Circuits Design I'm trying to do the job, been in touch with the manufacturer and they want £120 for the driver and reckon delivery will be about 5 weeks, anything I could pick up from a standard wholesaler?
Is there anyone have ideas of it? Thank you in advance.

 

[itsmoked]

Consider searching Youtube videos. Someone on there likely shows how it's done.

That particular number of HPLEDs in series, and that current is very common in aquarium applications so you will find a lot about driving them in those type forums.

Reef Central is probably the largest. I've written many threads on building LED lighting in there.

Hopefully the search works. Look farther back in time where threads were all educational about the brand new HPLEDs that were becoming available. If you have to join to do searches go ahead. I think I've only received 2 or 3 unsolicited emails in 15 years.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[FacEngrPE]

This search term

https://duckduckgo.com/?q=led+driver+constant+current+350ma&t=lm&ia=web

turns up some 350mA constant current LED drivers that are more than an order of magnitude less costly. Some of these appear to meet your requirements.

LED's like florescent lights have the ugly characteristic of increasing current reduces the resistance. Constant current drivers are an ideal match, but you can also use a resistor as the current control device. Forward voltage is about 3 to 3.6 volts/per, so your series of 3 LED's needs 9 to 10.8 volts at the driver (or voltage divider) output. This is within the capabilities of many of the drivers found at the link.