This circuit was obtained from a 1977 FET manual. The circuit measures inductances using a signal generator as a reference. The range is from 60 uH to 60 000 H. The FET can be a BF245.
This circuit was used to reinforce radio signals for listening on the phone, making it possible to listen...
This synthesizer circuit was found in a Radio Electronics magazine from May 1983. The circuit uses...
The circuit that gave rise to this configuration was found in a magazine of the 1980s with the...