This circuit appears on this site from different sources. This is from documentation from the 1980s. The operating system used is uncommon and can be replaced by a more modern equivalent.
This circuit was found in a 1977 RCA documentation. The source must be symmetrical, but the...
This Hartley oscillator can be used in tests or as a signal injector. The transformer is the type...
We found this circuit in the November 1985 issue of Radio Electronics magazine. It uses TTL...