This sensitive receiver for the medium wave range was found in Radio Electronics magazine from December 1960. The circuit has a headphone output and is powered by just 3 V.
The frequency depends on the coil and is not found in the original documentation but should be...
This is a device for those who need to show that they know how to use digital electronics but have...
Using an operational amplifier with FET, this circuit from a 1977 publication can generate...