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.
Found in a 90s Popular Electronics, this circuit is intended for amplifying analog video signals....
This antenna amplifier or booster for receivers from 100 kHz to 30 MHz was published in a...
This somewhat complex circuit was found in the May 1984 issue of Radio Electronics magazine. The...