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Help With Color Organ Circuit

Discussion in 'General Electronics Discussion' started by spunce, May 11, 2012.

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  1. spunce

    spunce

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    May 11, 2012
    This is my first post, I'm an electronics noob so be easy on me.

    I'm trying to build a Color Organ circuit which is basically a circuit that takes an audio input and uses it to control a strand of Christmas lights. I've done some searching elsewhere on the internet and I've found a bunch of information on how to do this with LEDs but I can't figure out how to do it with Christmas lights.

    My requirements are:

    I want to have the entire circuit powered by my wall outlet.
    I want the circuit to be all analog (no microcontrollers or pics)
    I want to be able to plug in a 1/8" stereo cable from an iPod or any other audio source and have the Christmas lights react to the swells in the music.

    My problem is:

    Christmas lights are wired in series so they need to be plugged straight in to a ~120v wall outlet in order to operate. Since I want the circuit to be run entirely from my wall outlet how can I drop the voltage down to a low level that the control circuit can handle? Is this possible or will I have to isolate the two circuits with an optocoupler, etc. and power the control circuit separately with a 9v battery or something like that? Any help would be greatly appreciated.
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    10,322
    2,239
    Nov 17, 2011
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