This oscillator with emitter follower was found in an American documentation from the 80's. The circuit generates 100 MHz signals and the transistors admit modern equivalents.
This circuit was found in a 1960 transistor manual from Sylvania. It measures the intensity of...
I found this circuit in an old Argentine publication from 1973. The components are no longer...
Found in Ferranti's 1969 documentation, this circuit can be mounted with a modern equivalent...