This circuit was published in the July 1993 issue of Electronics Now magazine. It uses a sensor from the time and triggers a buzzer with a Sonalert-type oscillator.
With this circuit we can present an 8-bit binary information from a software on an 8-LED display. The...
The accuracy of this circuit depends on the resistors connected to the band selection network. The...
This oscillator produces an audible signal on a piezoelectric transducer. The frequency is...