ELECTRONIC_THEREMIN

Published:2009/7/7 3:13:00 Author:May | From:SeekIC

This circuit has the CMOS IC doing double－duty performance,The first two mvertersoperate as a digital audio oscillator;the third operates as a low－gain linear audio amplifier,As the intensity of the light falling on photoresistor LDR1 mcreases the oscillator's frequency Increases;similarly,the illumination falling on photoresistor LDR2 determinesthe volume level from the loudspeaker:The more illumination the more volume.If you flop and wave your hands between the two photocells and a light source,a special kind of electronic muslc will be produced.



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