We found this circuit with JFETs in a Radio Electronics magazine from June 1969. The circuit has its assembly described in a complete article. Equivalent transistors can be used.
The L1 coil consists of 20 to 100 turns of fine wire in a cardboard box where plant specimens are...
This circuit was found in a 1980s documentation from the manufacturer of the integrated. The...
The circuit also works as a synchronized rectifier and balanced modulator. We found it in the...