Circuit emulates mechanical metronome: 8/19/99
EDN-Design Ideas produces timing signals with
a sound like that of a mechanical metronome. IC1 is
a 555 timer that oscillates at approximately 3200
Hz. The two 3-kW resistors and the 0.047-µF
capacitor set the frequency. IC2 divides the
frequency of IC1's output by 2. IC2 produces a
square wave with an exact 50% duty cycle.