Found in a 1969 EDN, this high current circuit, not indicated in the documentation, uses transistors from that time. The input voltage can be between 9 and 11 V.
Found in 90s Popular Electronics this circuit amplifies signals over a wide range of frequencies....
Microsemi Le87557 Differential Amplifier Mouser Electronics offers Microsemi Le87557 single...
This small regulated power supply was found in a 1963 General Electric documentation. The special...