Description.
This reaction engine sound generator circuit is predicated on the sound generator IC HT2844P from Holtek Semiconductors. This specific IC will create four sounds specifically low speed sound of reaction engine, high speed sound of reaction engine, missile sound and machine gun sound. every of those sounds will be activated by connecting the pins twelve, 13, 14and fifteen to ground by victimization the several button switches. resistance R3 will be used for manually increasing or decreasing the speed.LED D1 offers an understandable indication of the sound.
Circuit diagram.
Notes.
The circuit will be high-powered from a 3V battery.
Do not provide quite three.3V to the IC.
K1 will be a 200mW/8 Ohm speaker.
IC1 should be mounted on a holder.
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