This circuit is used in transceivers, enabling input selection by diode switching through polarity reversal. The circuit is from an old American documentation on telecommunications.
This circuit was found in a 1970's Radio Electronics. The pulse transformer has a 1: 1 turn ratio....
We found this circuit in a documentation from the 70s. The circuit uses amplifiers from the time,...
This circuit is an alternative to the previous circuit. We found it in the same article in the...