Found in an 90s Electronic Design, this circuit provides a 110 dB output to a ceramic transducer. The transducer is of the type available at the time.
This is the project found in a 1981 publication, but it is still viable. It is a simple AM...
The LM123 series (223 and 333) is manufactured by several semiconductor companies. The circuit below...
This circuit is from a Radio Electronics magazine from June 1969. The circuit uses two SCRS to...