The circuit shown in the figure below is from the 1993 Linear Technology Applications. The operational ones used are uncommon and the use of equivalents can be analyzed.
This circuit was found in a 1963 publication. Its purpose is to test general purpose NPN and PNP...
Found in September 1984 Radio Electronics issue this circuit has adjustable pulse width and...
This pocket-sized VHF receiver was found in Radio Electronics magazine from January 1961. It uses...