This circuit was obtained in a 1967 General Electric documentation. It alternately fires two xenon lamps in a signaling system. Observe the high continuous supply voltage.
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...