This interesting benchtop circuit was found in the May 1977 issue of Radio Electronics magazine. The circuit has frequency adjustment, and the waveform selected by a switch.
This circuit was suggested by old French documentation, but it can be used as a shield, in which...
This circuit with an integrated circuit of the time was found in the magazine Radio Electronics of April...
In the figure we have the amplifier application in a NOR gate, with reference voltage equal to the...