This an old commercial receiver found in a year 1958 magazine. The circuit uses some transformer available that timer and the transistors are germanium types. The circuit is intended to receive MW stations.
We found this circuit in an old 1980s documentation. The circuit can be implemented with modern...
This circuit was obtained from a 1994 publication. Its purpose is to digitally switch 5 audio...
This circuit is from an old Signetics documentation. It can be implemented with modern operational...