[sdiy] LEDs and noise

[Rutger Vlek]

On 18 mei 2015, at 16:23, mskala at ansuz.sooke.bc.ca wrote:

> On Mon, 18 May 2015, Rutger Vlek wrote:
>> of transistor-switched LEDs in Douglas Self's book, but I was wondering
>> how to deal with different current requirements of different LED's? Does
> 
> Quite often the current requirements for LEDs of different colours are
> similar - it's the voltages that vary.  But if I wanted to drive different
> LEDs with different amounts of current for whatever reason (different
> colours, different types of LEDs of the same colour, even different
> brightness levels for identical LEDs), I would split them into separate
> chains per distinct value of current.  That seems the easiest solution.


Do you mean split in chains with a current source each? Or can they share a current source?

Rutger

> 
> -- 
> Matthew Skala
> mskala at ansuz.sooke.bc.ca                 People before principles.
> http://ansuz.sooke.bc.ca/