Found in a 1969 EDN, this high current circuit, not indicated in the documentation, uses transistors from that time. The input voltage can be between 9 and 11 V.
This circuit is intended to limit the ringing time of a bell. Even if the button is kept pressed for...
We found this circuit in the November 1974 Radio Electronics magazine. The frequency depends on C1...
This conventional 12 V power supply stabilized with 2 A current was found in a 1995 documentation. Its...