This circuit was found in American documentation from the 1960s. The operational amplifier is from that time, but the configuration applies to modern equivalents.
In the figure we have the diagram of a simple transistor radio for the medium wave band. The...
The integrated circuit used in this 1986 wireless microphone is not very common today. The L1 coil...
This circuit was found in the Linear Applications Handbook of the National Semiconductor of 1994....