Driving arrangement for a varying colour light emitting element

Details Driving arrangement for a varying colour light emitting element Driving arrangement for a varying colour light emitting element

H - Electricity

05

B

179/2.5

H05B 39/09 (2006.01) F21S 10/02 (2006.01) F21V 33/00 (2006.01)

Patent

CA 1248460

DRIVING ARRANGEMENT FOR A VARYING COLOUR LIGHT EMITTING ELEMENT ABSTRACT OF THE DISCLOSURE This light emitting element comprises three differently coloured luminous sources the excitation of which varies as a function of a signal developed by a physical phenomenon sensor, in particular a microphone. The analog signal emitted by the sensor is initially converted into a sequence of electrical pulses in a suitable converter. The leading edges of said pulses are next ap- plied to a counter the output of which provides a coded signal which changes with the arrival of each such edge and thus determines a different state of excitation of the luminous sources. The arrangement as described enables changing the colour of the element from a musical signal.

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