High current buffer (CB7280E)

Suggested by Popular Electronics, it is a digital amplifier, for pulses with frequencies up to a few megahertz.

Bargraph or Mobile Bar Indicator using the 4093 (CB13181E)
The circuit shown in the figure, activates a bar of 4 LEDs with an audio signal applied to its...
MW and SW Experimental Radio (CB17462E)
This simple experimental circuit, with a good external antenna can capture distant stations in the...
Simple Diodes Test (CB16293E)
How to test a general-purpose diode Those who do not have a multimeter, or other instrument that...