We found this circuit in a publication from the 1980s. Transistors can be replaced by current equivalents. The circuit is for 6 V and the capacitors determine the frequency of the oscillations.
Indicated as an amplifier block for various applications, this circuit was obtained in a 1966...
This circuit is from a 2005 Linear Technology manual. The circuit is powered by 3.3 V but can...
This old two-stage video amplifier uses integrated circuits that are not easily obtainable today. The...