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.
Found in General Electric and 1967 documentation, this circuit automatically turns off the...
This amplifier stage without an output transformer was found in Radio Electronics magazine from...
Found in an Electronics World of 1968 this circuit can use current SCRs and the diodes are...