This circuit is based on the DCP010515 integrated circuit found in the August 1998 issue of Electronics Now magazine. This integrated circuit is not very common these days.
This conventional series reducer circuit reduces the voltage of a 12 V battery to the selected value...
In the figure we have a converter that generates a negative voltage from a positive voltage...
This circuit covers the bands from 1.8 to 150 MHz, with plug-in coils whose characteristics are...