This high current switching stage was found in a 1967 EEE. The power transistor is from that time. The peak current can reach 30 A.
This circuit with germanium transistors was found in documentation from the 50's. The transistors are...
The circuit presented was found in a documentation from the 1950s, generating a sinusoidal signal...
This circuit was originally indicated as a signal reinforcement step for the previous receiver...