This timing circuit was found in old documentation. The technology is CMOS. The supply can be made with voltages from 3 to 12 V. The time depends on R1 and C1.
This adding amplifier with the operational LM324 is from the SGS integrated circuits manual of...
This circuit measures the conductivity of a saline solution, which is affected by the electrolysis effect....
This circuit activates one of the selected circuits with a touch of a switch, keeping it...