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.
This small circuit for the medium or short-wave range, depending on the coil, was found in a...
This circuit is suggested by Texas Instruments and can be used on an assembly line to drive an...
This transmitter emits signals in the FM range, reaching a few meters away. The modulation...