Schematics and Circuits Index
Figure 442 : Electronic Siren - 4-SOUND
Figure 163 : Learn to Solder
Figure 1152 : Oscillator Driving a Speaker
Figure 458 : Robot Voice
Figure 1177 : Simple Metronome 555
Figure 350 : Siren
Figure 360 : Space AGE
Figure 174 : Space WAR GUN
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