In the figure we have a good rectangular signals generator with several frequency bands. The circuit is based on old logic but can be implemented with modern equivalents.
This circuit is from an 80's documentation, firing when the input voltage exceeds 5 V. The SCR can...
This circuit was found in the 1989 Radio Electronics Experimenter edition. The circuit has the...
This basic circuit can be used in signal followers and other applications where an RF signal is to be...