We found this circuit in a Linear Technology documentation from the 80's. It has a demodulator, being suitable for links and remote controls. Note the unusual type of detector configuration.
This circuit was found in an old documentation, working with the previous circuit (CB19379E)...
This simple low-power circuit uses, in the original version of 1965, germanium transistors. The...
This circuit was found in an 80's Electronic Engineering. The circuit uses operatives of the time...