Simple Colour Organ

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This is a simple, one lamp colour organ. It is far less complicated then the Three Channel Colour Organ. It is simply a lamp controlled by an SCR. It can be built in a few minutes, and combined with other circuits to make some pretty neat effects.


This is the schematic of the Simple Colour Organ


Total Qty.
R11500 Ohm Pot
T11500 Ohm/500 Ohm Matching Transformer1K/1K Matching Transformer
SCR11C106Y SCR106B, Teccor S2003LS1
L1110-100 Watt Lamp
MISC1Case, Board, Socket For L1, Line Cord


  1. L1 can be any 10-100 Watt lamp.
  2. R1 adjusts sensitivity. The greater the resistance, the less sensitive the colour organ becomes.
  3. Since this project is powered by 120 VAC, it must be installed in a case.
  4. You can also use the Teccor S2003LS1 SCR for SCR1. These give better sensitivity and brightness than the C106Y units.

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Simple Colour Organ
Tuesday, July 19, 2022 12:03:01 PM
in this simple light color organ i noticed a major part mistake, you should use the C106B1, not the C106Y because it only has a maximum rated voltage of 30 volts While the C106B1 is rated for 200 volts
Simple Colour Organ
Friday, December 11, 2009 9:03:51 AM
Is there any way to make it run on 220v?
Simple Colour Organ
Tuesday, December 08, 2009 8:05:23 AM
Srry about a stupid question but where should i get the scr. Can i find it from any electrical machines( Tv, some broken PCs, in coffee machine or something like that). Please reply, im stuck on that. Theres not much info on the web.
Simple Colour Organ
Thursday, December 03, 2009 2:21:42 PM
Sorry about a stupid question but where would i get the C106Y SCR
Simple Colour Organ
Wednesday, November 26, 2008 8:57:15 AM
What type of mic should be used? Any?? Pre-amp???
Simple Colour Organ
Monday, August 18, 2008 4:48:47 PM
teh mic connects to the unused side of the matching transformer, as the mic changes the inductive field of the transformer, the secondary coil then changes the bias of the triac...
Simple Colour Organ
Monday, July 09, 2007 3:09:20 AM
How would sound activation be integrated into this circuit? ex. sound in mic = to patterns in lightbulb
Simple Colour Organ
Wednesday, May 30, 2007 4:32:37 AM
Simple Colour Organ
Thursday, May 10, 2007 6:49:24 AM
The secret to understanding electronics is to understand each part and what role it plays in the circuit. Of each thing you see in a circuit, ask: "What to I expect to put in and what will this device do with it." If you can answer that, the circuit is self-explanitory. If not, educate yourself. Don't expect everything to be handed to you with a ribbon.
Simple Colour Organ
Friday, May 04, 2007 5:51:23 PM
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