Found in an Elektor from the 90s, this circuit can be powered directly by the power grid. The circuit uses a rectifying bridge that can be replaced by 4 common diodes.
This typical two-transformer push-pull step circuit can be found on many small old radios and...
With the help of a trimpot, the Schmitt trigger input voltage can be brought to the threshold of...
This is one of the many electronic dice that the reader can find on this site. The difference is that...