This timer with 1 second accuracy was obtained in a 1973 documentation. The Buzzer is a low-power type but can be replaced by a transistor stage to drive a relay. The supply can be made with voltages from 6 to 12 V depending on the load.
This timer with 1 second accuracy was obtained in a 1973 documentation. The Buzzer is a low-power type but can be replaced by a transistor stage to drive a relay. The supply can be made with voltages from 6 to 12 V depending on the load.
