Horn (Project)

Project Number: 3

Parts Needed: The same as the previous project, but replace the white LED (D6) with the horn (W1).

Description: Modify the preceding circuit by replacing the white LED (D6) with the horn (W1), as shown. This circuit makes noise instead of light.

Mrs. Snappy: The horn converts electricity into sound by making mechanical vibrations. These vibrations create variations in air pressure which travel across the room. You “hear” when your ears feel these air pressure variations.