Found in old documentation, this circuit makes use of amplifiers of the time, uncommon today. Next to the diagram, the formula for calculating the components.
This temperature compensated circuit was found in a Popular Electronics of the 1990s. The circuit...
This LED special effects circuit was found in the February 1992 Radio Electronics magazine. The...
This circuit is part of an oscilloscope project with the PC. Its purpose is to record a peak in a...