Optically coupled decorative light controller

Details Optically coupled decorative light controller Optically coupled decorative light controller

1980-09-10

1983-06-07

Truhe, J. V.

Music

Accessories

Producing color or light effects

84 124, G10H 102

Patent

active

043865500

ABSTRACT:
A digital rectangular wave musical tone generator (10) activates a speaker (12) to produce sounds of aural quality similar to musical instruments, while varying the intensity of light output from a light-emitting diode (13). The intensity variations of this light controls the resistance of a photoresistor (16), which varies the power supplied to decorative lights by a power control device (19), thus varying the intensity of the decorative lights in synchronism with the sound.

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Sourcebook of Electronic Circuits, 1968, pp. 401-402.
Blechman, "Transistor-Photocell Color Organ", Electronics World, Jul. 1964, vol. 72, No. 1.

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