This circuit was found in an 80's Electronic Engineering. The circuit uses a multivibrator with neon lamps and an optical coupling system.
This classic windscreen wiper interval setup was found in American documentation from the 90s. The...
We found this antenna amplifier or Booster circuit in an Electronics Now from the 90s. The circuit...
We found this circuit in a 2005 Linear Technology manual. Observe the component values and...