Found in a 1969 EEE, this circuit converts input pulses into linear sawtooth signals, as shown in the graphs beside the diagram.
The integrated circuit used in this project is not common today, but it can be implemented with more...
Found in an American publication from 1969, this circuit can be adapted to be used as a shield....
This current meter with many scales was found in a 80s American documentation. The operational amplifier...