Detailed explanation of the circuit diagram of the sound effect generator based on UM3561
Source: InternetPublisher:newlandmark Keywords: Generator circuit sound effect Updated: 2024/07/12
illustrate:
This circuit uses UM3561IC to produce four different sound effects.
Circuit Diagram
Notes:
There is nothing complicated here. All sound effects are generated by the IC, which is amplified by the transistor at pin 3 and drives the speaker. A 56 ohm resistor and 8 ohm speaker can be replaced by a 64 ohm speaker.
2 pole 4 way switch controls sound effects. Position 1 (drawn) is a siren, position 2 is a fire truck sound, 3 is an ambulance and position 4 is a machine gun effect. This IC has been discontinued.
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