Hello,

Here is an idea for an extention of the led organ.
It is a comparator that can drive the EL inverters.

At the moment when the leds get dim the inverter is switched on.
When you want the inverter switched on when the leds go brighter, exchange the + and - inputs of the opamp.

Greetings,
Bertus

Hi Bertus,

I am looking for something more powerfull. Want to controll a 120V bulb(s) for a stage performance. Any advice?

 

Please don't hijack threads - always open a new topic for a new question. This is the original thread - http://forum.allaboutcircuits.com/showthread.php?t=17184&page=2.

To control AC, use triacs. The methodology is called phase angle control. Here is a link into our Ebook on how it's done - http://www.allaboutcircuits.com/vol_3/chpt_7/6.html

 

Then you will need a TRIAC to be able to control AC loads.