Correction POPULAR ELECTRONICS [1] Feb 1970 (v.32#2) pg. 13
Three-channel color organ circuit uses triacs instead of SCRs to avoid a large power supply.
POPULAR ELECTRONICS [1] Nov 1971 (v.35#5) pg. 83
Design your own color organ. Pick your own channel frequencies using this simple design method.
POPULAR ELECTRONICS [1] May 1973 (v.3#5) pg. 62
Build an IC light modulator. Control up to 1000 watts of light with this single channel modulator which will respond to sound input from hi-fi or musical instrument amplifiers.
POPULAR ELECTRONICS [1] Aug 1973 (v.4#2) pg. 88
Basic circuit for a color organ.
POPULAR ELECTRONICS [1] Oct 1974 (v.6#4) pg. 101
Line filter to prevent radiation of harmonics when higher powered bulbs are installed in some color organs.
POPULAR ELECTRONICS [1] Jun 1977 (v.11#6) pg. 92
Electronic Christmas gifts built around the TL489C analog level detector. It can be used to make (1) soil moisture detectors, (2) temperature range indicators, (3) controls and alarms for fish fanciers, chemists, chefs and photographers, (4) battery & continuity testers, (5) toys and games, (6) simple light organs, (7) humidity alarms,...etc.
POPULAR ELECTRONICS [1] Dec 1978 (v.14#6) pg. 78
Pocket color organ is built into a bicycle light case. Powered by one or two 9-volt batteries.
POPULAR ELECTRONICS [1] Mar 1980 (v.17#3) pg. 92
Circuit for a digital color organ using an LM3915 LED dot/bar display driver.
POPULAR ELECTRONICS [1] Jul 1980 (v.18#1) pg. 93
Nothing box. A transistor-based light organ circuit operates LEDs in response to volume levels from speaker terminals.
POPULAR ELECTRONICS [2] Sep 1991 (v.8#9) pg. 21
Build a sonic kaleidoscope. This variation of a color-organ features a kaleidoscope-like pattern for the display.
POPULAR ELECTRONICS [2] Oct 1992 (v.9#10) pg. 58
Build a multi-chrome projector which uses four LEDs to create and project soothing color patterns onto a small rear-projection screen. Use as a biofeedback stress reliever, or just a pleasant diversion.
POPULAR ELECTRONICS [2] Jan 1997 (v.14#1) pg. 41
Simple color organ uses mirrors attached to a speaker which vibrate and reflect light aimed at mirrors onto ceiling and walls.
POPULAR MECHANICS Dec 1968 (v.130#6) pg. 188
Electronic device increases or decreases 110-volt AC voltage in response to a louder or softer sound. Can cause lights to glow bright or dim in response to music.
POPULAR SCIENCE Dec 1969 (v.195#6) pg. 144
Lumitron-4. Part 1. Build this versatile light sequencer. Four-channel light controller will sequence automatically or in time to the music.
RADIO-ELECTRONICS Jun 1981 (v.52#6) pg. 47
Correction RADIO-ELECTRONICS Sep 1981 (v.52#9) pg. 16
Lumitron-4. Part 2.
RADIO-ELECTRONICS Jul 1981 (v.52#7) pg. 56
Added Info RADIO-ELECTRONICS Dec 1981 (v.52#12) pg. 12
How to construct a projection kaleidoscope in which symmetrical patterns in color change form in synchrony with the tempo of music.
SCIENTIFIC AMERICAN Jul 1975 (v.233#1) pg. 124