Found in an old American documentation this FM modulator makes use of a varactor diode. The circuit can be easily implemented given the small number of components used.
This circuit was found in an old publicatio n from the year 1958. The circuit controls an external load by...
This xenon flasher version for the power grid is from an 80's EDN. The circuit uses a folder and a...
This interesting multivibrator was found in an Italian magazine that no longer exists. This is...