This detector was found in an old Electronic Design using transistors of the time. The circuit can be made with modern equivalent transistors. See the charts with your performance.
The figure shows how to use a varicap in a conventional tuning circuit. The circuit may be an...
This bridge circuit for the bench can have several uses. We found it in Radio Electronics magazine...
This VCO with a common operational amplifier was found in an old American documentation. The...