This circuit can be applied to several logics. The circuit is from an Electronics Now from the 90s, using two push-buttons.
This circuit was found in ancient American documentation. It provides a 70 Vpp signal at...
This circuit appears in various parts of this site and this section, with diverse origins. This is from...
This stage of IF to 455 kHz operates with voltages from 1.5 V. We find it in a 90s Popular...