how to slowly glow up LEDs

Thread Starter

bchen

Joined Mar 26, 2011
2
Dear all, I would like to create a simple circuit that can slowly (takes about 1 second to) glow up a LED. I have tried to connect a capacitors, resistors and LED in series but it doesn't work.. Any suggestions?
 

Wendy

Joined Mar 24, 2008
23,429
LED fade in/ fade out

Introduction and PaintCAD , Chapter 12

There are many ways to do this. You need to define your application better. I suspect a simple transistor added to the rest of the mix will get you where you want to go.

The first post I showed is a comedy in misunderstandings, but we eventually got him where he wanted to go.

In the second link (which is an article and tutorial I wrote) look for "comet trails" in Chapter 12.
 
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