Sign in to follow this  
hamster

Constant current drivers for LEDs.

Recommended Posts

I've just finished testing my LED driver PCB - 8 channels, each driving two constant current outputs (well, sinks actually).

 

Loaded with 50 ohm sense resistors it gives 13mA per channel. 33 ohm will give 20mA.

 

 

It is using discrete transistors to allow for higher power dissipation - maybe up to 300mW per channel, so should survive a hard short in in LED chains that that run at up to 15V. 

 

If anybody wants a PCB just ask... I can send it air post so you might just be able to use it for your Christmas tree lights

  • Like 1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this