Found in Elementary Electronics from 1970, this circuit is a toy for generating different types of sound effects. The circuit is battery powered.
The purpose of this 1965 Radio Electronics circuit is to help observe cycloid waveforms on an...
This circuit was obtained from a 1976 NASA handbook. The circuit makes use of an operational of the...
In the figure we have the way to use a common LED as a light sensor. The operational power supply...