This is a simple, one lamp colour organ. It is simply a lamp controlled by an SCR. It can be built in a few minutes.
	Parts:   QTY Description Substitutions R1 1 500 Ohm Pot   T1 1 500 Ohm/500 Ohm Matching Transformer 1K/1K Matching Transformer SCR1 1 C106Y SCR 106B, Teccor S2003LS1 L1 1 10-100 Watt Lamp   MISC   Case, Board, Socket For L1, Line Cord   Notes 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.