Found in a 1965 Electronic Design, this circuit generates adjustable pulses between 200 uA and 10 mA. The components admit equivalents. Pulse duration is 1 us.
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...