Standard 1 MHz Oscillator (CB9653E)

We found this circuit in an old American documentation. Transistors can be modern equivalents.

VU Meter Bargraph (CB12307E)
We found this circuit in a 1985 documentation. The 4-LED bargraph is excited by an input voltage. The...
High gain photo relay (CB8268E)
This circuit was found in Ferranti's 1967 documentation. The circuit drives a 40 V relay, but it can...
Low voltage flasher (CB9789E)
We found this circuit with PUT in an American publication from the 1980s. PUT is not a common...