We found this circuit in the October 1994 Electronics Now magazine. The CMOS IC is uncommon these days and the output is low power.
This circuit for RF signals was found in the March 1987 issue of Radio Electronics magazine. The...
This circuit uses a digital module from the time. We found it in February 1984 Radio Electronics...
This circuit uses old germanium transistors because it was found in an old magazine from 1973....