This alarm with automatic shutoff was found in the April 1975 Radio Electronics magazine. The activation time is given by C1 and R3. The alarm uses series and parallel sensors.
Found in a 90s Electronic Design, this circuit produces adjustable pulses that start after an...
We found this circuit in an English documentation from 1995. The components used are common...
This short circuit protection circuit is found in an old technical documentation. The circuit can...