On 18/11/16 12:29, Lee wrote:
On 18/11/2016 11:06, Dave Plowman (News) wrote:

I have slung together a lash up using a voltage reg to give a soft start
and a simple RC for the fade out. With a small tungsten, it gives a
pretty
good fade in and out. With a LED, it exhibits the effect I noted. It sort
of comes on at about half brightness then fades up to full. It fades out
perfectly. Almost as if the LED had a 'strike' current.


I still think you need to PWM it to get the effect you want, simple
voltage control is unlikely to achieve that.

Simple current control might though.

But even that is beyond the plow****



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