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.
In the figure we have a converter that generates a negative voltage from a positive voltage...
We found this circuit in an old documentation. The integrated circuits used are specific to...
This microtransmitter operates at a frequency between 3.5 MHz and 10 MHz determined by the...