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Intermitent Siren Using the 555 IC (MSB063E)

This siren produces an intermitent sound given by the characteristics of the two oscillators using the 555 IC. C1 and C2 can be choose according the desired effects. A power stage can be use to drive a loudspeaker. Power supply comes from 3 to 15 V supplies. Figure 1 shows the circuit for the siren.

 

Figure 1 – Circuit
Figure 1 – Circuit

 

The output signal dusplayed by the virtual oscilloscope of the Multisim is shown in figure 2.

 

Figure 2 – Wave shape in the output
Figure 2 – Wave shape in the output

 

 

To download the simulation files and Netlist - click here (msb0063.zip)