This circuit tests the reverse voltage of power diodes. The transformer is high voltage and so are the rectifier diodes. The circuit is from a 1976 QST magazine.
This circuit was published in an article in Electronics Now magazine in October 1995. The circuit...
This circuit was found in a 1926 German publication. It is a crystal or galena (D) receiver. The...
With this configuration, greater power can be obtained from an operational amplifier, thanks to...