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.
This circuit was found in an English magazine from 1979. The magazine no longer exists, but the...
We found this circuit in a PopularElectronics of 1993. The circuit generates signals whose...
This circuit was found in an English technical documentation from 1973. The circuit generates...