This circuit is used in frequency meters to isolate the input output. The circuit is from old documentation. Equivalent operational amplifiers can be used.
This is the project found in a 1981 publication, but it is still viable. It is a simple AM...
August 2017 - Rectron's Schottky Barrier Diodes can now be obtained from Mouser Electronics. The...
We found this AM radio in a 1957 transistor application manual, published by Raytheon. The...