This circuit allows the listening of undersea sounds using a special transducer. Operational amplifiers can be of any type. The circuit was found in a Popular Electronics from the 90s.
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...