This circuit is from the 1983 Intersil Databook. The circuit has an A / D converter for display of 4 and a half digits being powered by a voltage of 9 V.
The integrated circuit used in this Electronics Now amplifier is not very common today. However,...
Found in a 90s Popular Electronics, this mixer can be expanded to more channels. Transistors can be...
The circuit shown in the figure is indicated for alternative energy sources, such as those...