This circuit was obtained in documentation on medical applications from 1966. The circuit is used in electromyography by switching the electrodes used with the equipment.
This circuit was obtained in a documentation of the 80s, using operational of the time. The...
This circuit is suggested by American documentation from 1970. It makes use of transistors of the time...
We found this circuit in a 1967 IEEE documentation. The circuit uses discrete components of the...