This circuit is used in a LASER detection system to avoid echoes from short distances in systems up to 1 mile. The circuit is from a 1967 documentation.
Found in an American documentation from 1968, this circuit uses transistors from the time. The...
This circuit is based on an LM123 and can supply output currents up to 3A. IB is typically 3.5A...
This experimental radio was obtained in an old Argentine publication. Germanium transistors are...