A Simple Sound Effects Generator Circuit uses a UM3561 IC to produce four different sound effects.
Simple Sound Effects Generator Circuit Diagram:
Nothing too complicated here. The IC produces all the sound effects, the hasil at Pin tiga being amplified by the transistor. A 64 ohm loudspeaker can be substituted in place of the 56 ohm pelawan and 8 ohm loudspeaker. The dua pole 4 way switch controls the sound effects. Position 1 (as drawn) being a Police siren, position 2 is a fire engine sound, tiga is an ambulance and position 4 is a machine gun effect. The IC is manufactured by UMC and was available from Maplin electronics code UJ45Y. At the time of writing this has now been discontinued, but they have have limited stocks available.
