This oscillator was found in a 70s RCA linear circuit manual. The oscillator makes use of an integrated device from the time, difficult to find today.
The circuit shown in figure 5 generates square signals based on a transconductance operational amplifier...
By adding a transistor to the output and some polarization features we can obtain a higher output...
Found in the 1990 special issue of Radio Electronics Experimenter magazine, this circuit uses an...