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Subject: chaser circuit

Date: 01/06/03 at 12:59 PM
Posted by: Richard Astley
E-mail: mail@litesolutions.co.uk
Message Posted:

I need some help in designing a small circuit. I want to be able to fade and chase through 3 channels of lights or LEDs. for example channel A will fade up then channel B will fade up so both A and B are on. The channel A should fade down leaving just B on. Then channel C fades up so that B and C are both on. Then B should fade down leaving just C on. Then A fades up so C and A are on then C fades down so we are back to the beginning with A again.

I need to be able to adjust the time it takes to fade from 0% to 100% with a pot and the duration each step is on for with another pot. Also a switch a turns all 3 outputs to 100% would be usefull.

The circuit should run on 12V DC and the output should be via triacs or similar so that I can choose what voltage the outputs will drive, ie LEDs on 12V/24V or normal 240V bulbs.

Hope someone is able to help. I like building but have never understood how to design.

I look forward to hearing from some you.

Kind regards


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